CN115530183A - C/N @ titanium dioxide, metal oxide doped C/N @ titanium dioxide, nano fiber thereof, preparation method and sterilization equipment - Google Patents
C/N @ titanium dioxide, metal oxide doped C/N @ titanium dioxide, nano fiber thereof, preparation method and sterilization equipment Download PDFInfo
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- CN115530183A CN115530183A CN202211250824.5A CN202211250824A CN115530183A CN 115530183 A CN115530183 A CN 115530183A CN 202211250824 A CN202211250824 A CN 202211250824A CN 115530183 A CN115530183 A CN 115530183A
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- metal oxide
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 187
- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 93
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 93
- 239000002121 nanofiber Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 25
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 23
- 229910010413 TiO 2 Inorganic materials 0.000 claims abstract description 153
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 87
- 239000000463 material Substances 0.000 claims abstract description 83
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000002245 particle Substances 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 53
- 239000000084 colloidal system Substances 0.000 claims description 46
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 40
- 239000002131 composite material Substances 0.000 claims description 37
- 239000000843 powder Substances 0.000 claims description 33
- 239000000243 solution Substances 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 25
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 24
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 24
- 229920000642 polymer Polymers 0.000 claims description 23
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- 239000011787 zinc oxide Substances 0.000 claims description 20
- 235000019441 ethanol Nutrition 0.000 claims description 15
- 238000009987 spinning Methods 0.000 claims description 14
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical group CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 13
- 239000003960 organic solvent Substances 0.000 claims description 13
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 11
- 238000001354 calcination Methods 0.000 claims description 10
- 238000010041 electrostatic spinning Methods 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 229920002521 macromolecule Polymers 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- -1 titanium ions Chemical class 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 230000001699 photocatalysis Effects 0.000 abstract description 42
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 36
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 abstract description 10
- 230000002829 reductive effect Effects 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000004044 response Effects 0.000 abstract description 6
- 125000004430 oxygen atom Chemical group O* 0.000 abstract description 5
- 238000003860 storage Methods 0.000 abstract description 5
- 230000005274 electronic transitions Effects 0.000 abstract description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 description 33
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 32
- 230000000844 anti-bacterial effect Effects 0.000 description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 17
- 238000000034 method Methods 0.000 description 17
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 230000006798 recombination Effects 0.000 description 11
- 238000005215 recombination Methods 0.000 description 11
- 239000002184 metal Substances 0.000 description 10
- 230000003197 catalytic effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000002243 precursor Substances 0.000 description 8
- 238000007146 photocatalysis Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229960000583 acetic acid Drugs 0.000 description 6
- 238000001523 electrospinning Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 239000012362 glacial acetic acid Substances 0.000 description 6
- 238000005286 illumination Methods 0.000 description 6
- 238000013329 compounding Methods 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 239000011941 photocatalyst Substances 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000002800 charge carrier Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000002105 nanoparticle Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000003385 bacteriostatic effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
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- 230000036541 health Effects 0.000 description 2
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- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 231100000053 low toxicity Toxicity 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- ZICZZIRIRHGROF-UHFFFAOYSA-N 1-$l^{1}-oxidanyl-2,2,4,5,5-pentamethylimidazole Chemical compound CC1=NC(C)(C)N([O])C1(C)C ZICZZIRIRHGROF-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000030833 cell death Effects 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
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- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 239000002158 endotoxin Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
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- 239000003574 free electron Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
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- 230000001590 oxidative effect Effects 0.000 description 1
- 230000001443 photoexcitation Effects 0.000 description 1
- 208000017983 photosensitivity disease Diseases 0.000 description 1
- 231100000434 photosensitization Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P1/00—Disinfectants; Antimicrobial compounds or mixtures thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/088—Radiation using a photocatalyst or photosensitiser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
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- B01J35/39—
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- B01J35/58—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/342—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of electric, magnetic or electromagnetic fields, e.g. for magnetic separation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
- A61L2101/02—Inorganic materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/13—Biocide decomposition means, e.g. catalysts, sorbents
Abstract
The invention relates to the technical field of photocatalytic sterilization, in particular to C/N @ TiO 2 Material, metal oxide doped C/N @ TiO 2 The material of (1), the nanofiber thereof, a preparation method of each material and sterilization equipment. C/N @ TiO provided by the present application 2 Material, C/N @ TiO 2 The material comprising TiO 2 Particles and coating on TiO 2 The C/N layer on the surface of the particle is of a three-dimensional net structure. C. The doping of N element mixes the electronic state of the 2p orbit of nitrogen atom with the electronic state of the 2p orbit of oxygen atom, so that the band gap is narrowed, the energy required by electronic transition is reduced, and TiO is made 2 The photocatalytic range is expanded to be within the visible light range, so that the response of the photocatalytic range is improved. Meanwhile, the carbon-nitrogen layer formed on the surface of the titanium dioxide has a three-dimensional carbon-nitrogen network structure, so that the electronic storage performance can be improved, and the electricity conversion efficiency can be improved.
Description
Technical Field
The invention relates to the technical field of photocatalytic sterilization, in particular to C/N @ TiO 2 Material, metal oxide doped C/N @ TiO 2 The material of (1), the nanofiber thereof, a preparation method of each material and sterilization equipment.
Background
Along with the development of the country, the quality requirements of people on living environment and living matters are gradually improved. People have new awareness on the safety of biological health, and begin to pay more attention to the safety of living environment. Since the main transmission routes of neocoronary pneumonia are direct transmission and aerosol transmission, the air quality closely related to us has to be taken into consideration. Sulfur oxides, nitrogen oxides, suspended particles of inhalable Particles (PMIO), and bacteria and viruses carried on solid particles in the air threaten human health.
Because titanium dioxide is used as an antibacterial material, the titanium dioxide has the advantages of good antibacterial effect, stable chemical property, low toxicity and low cost, and is widely applied. Titanium dioxide has a bactericidal effect, and is mainly characterized in that holes generated by photocatalysis and active oxygen species formed on the surface of titanium dioxide are utilized to carry out biochemical reaction with bacterial cells or components in the bacterial cells, so that bacteria are inactivated to cause cell death, and endotoxin generated after the bacteria are dead can be decomposed. But the visible light band which can promote the photocatalytic ability of titanium dioxide is narrow, and can be activated only under the wavelength of 387.5nm, namely, the visible light band has catalytic activity only under the irradiation of ultraviolet light, and can not be excited under the irradiation of the visible light, the ultraviolet light in the sunlight only accounts for 4% -7%, and the ideal photocatalytic effect can be obtained only in a long time, so that the catalytic efficiency of the titanium dioxide is seriously restricted, and the titanium dioxide is doped by adopting other elements, such as metal elements of Zn, fe, co, cu and the like, and non-metal elements of C, S, N, I and the like, so that the light band range of activated electrons can be improved to a certain extent, and most of sunlight and indoor light can provide the photocatalytic ability.
Disclosure of Invention
The invention mainly aims at providing C/N @ TiO 2 Material, increasing TiO 2 Response to photocatalytic range.
In order to achieve the purpose, the invention provides C/N @ TiO 2 Material, said C/N @ TiO 2 The material comprising TiO 2 Particles and coating on the TiO 2 And the C/N layer is a three-dimensional net structure.
Optionally, the invention provides C/N @ TiO 2 Preparation method of material, C/N @ TiO 2 The preparation method of the material comprises the following steps:
preparing titanium dioxide colloid;
dispersing the titanium dioxide colloid and the high molecular compound in an organic solvent, and removing the organic solvent to obtain a composite material of the high molecular compound and the titanium dioxide colloid;
the composite material of the macromolecular compound and the titanium dioxide colloid is placed in vacuum or protective gas atmosphere, calcined at the temperature of 500-700 ℃, and after calcination,obtaining C/N @ TiO 2 A material.
Optionally, the preparation step of the titanium dioxide colloid comprises:
adding butyl titanate into absolute ethyl alcohol, and stirring to obtain a butyl titanate solution;
adding an inhibitor aqueous solution into the butyl titanate solution to obtain a mixed solution, keeping the pH value within the range of 2-3, stirring, and standing to obtain the titanium dioxide colloid;
and/or the high molecular compound is polyvinylpyrrolidone;
and/or the organic solvent is ethanol;
and/or the weight ratio of the titanium dioxide colloid to the high molecular compound is (1.
The application also provides a metal oxide doped C/N @ TiO 2 The metal oxide is doped with C/N @ TiO 2 Comprises a metal oxide and the C/N @ TiO 2 The material, wherein the molar ratio of titanium ions to metal ions is (1.
Optionally, the metal oxide comprises one or a mixture of iron oxide and zinc oxide.
Optionally, the metal oxide is doped with C/N @ TiO 2 The preparation method of the material comprises the following steps: mixing the C/N @ TiO 2 Crushing the material into powder, and mixing the C/N @ TiO 2 Mixing the material with the metal oxide powder, placing the mixture in vacuum or protective gas atmosphere, calcining the mixture at 500-700 ℃, and obtaining the metal oxide doped with C/N @ TiO 2 The material of (1).
The application also provides a metal oxide doped C/N @ TiO 2 The metal oxide is doped with C/N @ TiO 2 Comprising nanofibers and a metal oxide doped C/N @ TiO as claimed in any one of claims 4 or 5 2 The metal oxide is doped with C/N @ TiO 2 Is supported on the nanofibers.
Optionally, the metal oxide is doped with C/N@TiO 2 The preparation method of the nano-fiber comprises the following steps:
doping metal oxide with C/N @ TiO 2 Adding the material and the polymer into a solvent, and stirring to obtain a polymer spinning solution;
adding the polymer spinning solution into an injector of an electrostatic spinning device, and spinning on a spinning needle head and a receiving platform of the injector under voltage to obtain the metal oxide doped with C/N @ TiO 2 The nanofiber of (4).
Optionally, the metal oxide is doped with C/N @ TiO 2 The mass ratio of the material to the polymer of (1: 10) - (1;
the polymer is polyacrylonitrile;
the solvent is N, N-dimethylformamide.
The application provides a pair of sterilization equipment, including the filter screen, the filter screen is provided with metal oxide doping C/N @ TiO 2 The nanofiber of (4).
The application provides C/N @ TiO 2 Material, C/N @ TiO 2 The material comprising TiO 2 Particles and coating on TiO 2 The C/N layer on the surface of the particle is of a three-dimensional net structure. C. The doping of N element mixes the electronic state of the 2p orbit of nitrogen atom with the electronic state of the 2p orbit of oxygen atom, so that the band gap is narrowed, the energy required by electronic transition is reduced, and TiO is made 2 The photocatalytic range is expanded to the visible light range, thereby improving the response of the photocatalytic range. Meanwhile, the carbon nitrogen layer formed on the surface of the titanium dioxide has a three-dimensional carbon nitrogen network structure, so that the electronic storage performance can be improved, and the power conversion efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 shows C/N @ TiO of the present invention 2 A method for preparing the material;
FIG. 2 is a representation of C/N @ TiO of the present invention 2 A schematic structural diagram of a material;
FIG. 3 is a diagram of the present invention of metal oxide doped with C/N @ TiO 2 Schematic structural diagram of nanofiber.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Nano TiO2 2 Has attracted much attention because of its stable performance, low cost, non-toxicity, innocuity and excellent photocatalysis effect. Despite the TiO s 2 The advantages are numerous, but the following disadvantages still exist in the practical application field of photocatalysis:
(1) Nano TiO2 2 The utilization rate of visible light is low. Anatase type TiO 2 The band gap energy is 3.2eV, ultraviolet light with the wavelength less than 387nm generated by a bactericidal lamp, a high-pressure mercury lamp, ultraviolet rays and the like is required to be adopted for irradiation, but the ultraviolet light has a micro specific gravity of 3-5% in the total amount of solar energy, and 45% of visible light in the solar energy can not cause nano TiO 2 The photocatalyst degrades pollutants, which greatly limits TiO 2 To the practical application of (c).
(2)TiO 2 The semiconductor has high photoproduction electron-hole recombination rate. When the excitation wavelength of the irradiation light is less than 387nm, the TiO2 absorbs the light to generate a photogenerated electron-hole pair, and the electron and the hole respectively migrate to the TiO 2 The surface reacts with the adsorbed substance to produce O with strong oxidizing power 2 And. OH, further redox contaminants. However, electrons and holes in the migration process are easy to recombine and quench and inactivate, and therefore TiO is greatly reduced 2 The photocatalytic performance of (a).
Therefore, the probability of photon-generated carrier recombination by adopting an appropriate modification means is crucial.
As shown in FIG. 2, the present application provides C/N @ TiO 2 Material, C/N @ TiO 2 The material comprising TiO 2 Particles and coating on TiO 2 The C/N layer on the surface of the particle is of a three-dimensional net structure. C. Doping of N element to make nitrogen originalThe electronic state of the sub 2p orbit is mixed with the electronic state of the 2p orbit of the oxygen atom, so that the band gap is narrowed, the energy required by the electronic transition is reduced, and the TiO 2 The photocatalytic range is expanded to the visible light range, thereby improving the response of the photocatalytic range. Meanwhile, the carbon-nitrogen layer formed on the surface of the titanium dioxide has a three-dimensional carbon-nitrogen network structure, so that the electronic storage performance can be improved, and the electricity conversion efficiency can be improved.
Now known as the newspaper end to TiO 2 The modification method is quite many, and mainly comprises metal and nonmetal doping, morphology modification, dye photosensitization, precious metal deposition, semiconductor compounding and the like. Wherein the semiconductor is modified nano TiO 2 The method is more used. Different semiconductors can extend the absorption spectrum region after recombination due to different forbidden band positions, and electron-hole transition and transfer occur between the semiconductors due to the difference between energy levels when light is irradiated, so that the separation efficiency of electrons and holes in a recombination system can be effectively improved.
Now surrounding TiO 2 Modification studies carried out have enhanced TiO to some extent 2 The catalytic performance of (a) still presents some problems: such as hydrothermal method, sol-gel method, vapor deposition method, etc., is complicated in preparation method, complicated in flow and long in time consumption.
The application mainly researches C and N doped titanium dioxide to improve the catalytic capability of the titanium dioxide under visible light, and the invention mainly aims to provide the C/N @ TiO 2 The material aims at providing a simple method for preparing C/N @ TiO 2 The material is used for simplifying the production cost and is beneficial to realizing industrial application.
As shown in FIG. 1, the present application provides C/N @ TiO 2 Material, C/N @ TiO 2 The preparation method of the material comprises the following steps: preparing titanium dioxide colloid; dispersing titanium dioxide colloid and a macromolecular compound in an organic solvent, and removing the organic solvent to obtain a composite material of the macromolecular compound and the titanium dioxide colloid; putting the composite material of the macromolecular compound and the titanium dioxide colloid in a vacuum or protective gas atmosphere, calcining at the temperature of 500-700 ℃, and obtaining C/N @ TiO after calcining 2 A material. The preparation method is simple, can realize mass production, saves industrial production cost, and is C/N @ TiO 2 The material has the advantages that the electronic state of the 2p orbital of the nitrogen atom is mixed with the electronic state of the 2p orbital of the oxygen atom due to the doping of C and N elements, so that the band gap is narrowed, the energy required by electronic transition is reduced, and TiO is made 2 The photocatalytic range is expanded to the visible light range, thereby improving the response of the photocatalytic range.
It will be appreciated that the C/N @ TiO obtained after calcination 2 The material has larger size, and can be conveniently used by mixing C/N @ TiO 2 The material is crushed, for example by grinding to a suitable size, but it can be crushed by other methods, and is not limited. The size after crushing can be nano size or micron size, and is not limited specifically, theoretically, the smaller the size is, the larger the specific surface area is, and the better the sterilization effect is.
The polymer compound is a polymer containing C and N elements, and may be selected as needed, and is not particularly limited, and may be, for example, a polyamide-based polymer.
Wherein, the organic solvent is used for dissolving the high molecular polymer and the titanium dioxide colloid, and the specific type is not limited, and can be ethanol, methanol and the like. The method for removing the organic solvent may be evaporation at a certain temperature, or natural volatilization, and in view of production efficiency, evaporation at a certain temperature is preferably used to remove the organic solvent.
The calcining temperature can be 500 deg.C, 600 deg.C, 700 deg.C, calcining and grinding to obtain C/N @ TiO 2 Materials in which the C and N materials are coated on the TiO 2 Surface, and not completely coated, to make TiO 2 Exposed to exert the photocatalysis function under the condition of illumination.
At present, a plurality of methods for preparing titanium dioxide colloid are available, related preparation methods are disclosed in patent literature and academic research, researchers can prepare the titanium dioxide colloid according to specific requirements, and the preparation of the titanium dioxide colloid is not limited in the application. Powder and colloidal properties different, tiO 2 The colloid has larger activity and smaller particle size,compared with titanium dioxide powder, the titanium dioxide colloid has more active sites, and in the preparation process, the high molecular polymer is easily adsorbed on the surface of the titanium dioxide colloid, so that the condition that C and N are coated on TiO is improved 2 The amount of surface, and the smaller the titanium dioxide colloid particle size, makes the product prepared have a larger specific surface area.
Further, in view of economic cost, the method for preparing titanium dioxide colloid by using sol-gel method comprises the following steps: adding butyl titanate into absolute ethyl alcohol, and stirring to obtain a butyl titanate solution; adding an inhibitor aqueous solution into a butyl titanate solution to obtain a mixed solution, keeping the pH value within the range of 2-3, stirring, and standing to obtain titanium dioxide colloid.
The inhibitor aqueous solution is used for inhibiting severe hydrolysis of the butyl titanate, and can be a solution of glacial acetic acid, diethanolamine and the like, and is used for slowing down the hydrolysis rate.
Further, the polymer compound is polyvinylpyrrolidone.
And/or the organic solvent is ethanol, and the ethanol has low toxicity and low price and is suitable for industrial production.
And/or the weight ratio of the titanium dioxide colloid to the high molecular compound is (1) - (1 2 The weight ratio of the titanium dioxide colloid to the high molecular compound can be, for example, 1.
The new method for doping carbon/nitrogen into titanium dioxide by adopting polyvinylpyrrolidone can solve the problem of narrow forbidden band width of titanium dioxide, so that the titanium dioxide can exert photocatalytic antibacterial performance under visible light.
The polyvinylpyrrolidone PVP is very easy to dissolve in water and most of organic solvents, has good biocompatibility, is used as a raw material provided by C and N, and has a simple experimental process. In the presence of TiO 2 After forming a carbon layer on the surface, the carbon layer may be formed on TiO 2 Form a three-dimensional netWhen the titanium dioxide is irradiated by visible light, excited electrons are transferred to a carbon network on the surface of the titanium dioxide, so that the electrons are stored. When the light conditions are reduced, these free electrons are trapped by oxygen to produce superoxide radical, O 2 Further, the air purification effect is improved.
C. The titanium dioxide is doped by non-metallic elements such as S, N and I, so that the light band range of activated electrons can be increased to a certain extent, and most sunlight and indoor light can provide photocatalysis capability. Due to TiO 2 Has the defects of absorption of ultraviolet spectrum, easy combination of photo-generated electrons and holes, and the like. Here, the research on the titanium dioxide doped with C and N improves the catalytic capability of the titanium dioxide under visible light. Due to the doping of C and N elements, the electronic state of the 2p orbit of the nitrogen atom is mixed with the electronic state of the 2p orbit of the oxygen atom, so that the band gap is narrowed, the energy required by electron transition is reduced, the photocatalysis range is expanded to the visible light range, and the recombination of electron-hole pairs is inhibited, thereby improving the response of the photocatalysis range.
Because the doped carbon/nitrogen element causes the absorption wavelength of the titanium dioxide to red shift towards the visible light region, the titanium dioxide can be excited in the visible light range (390-780 nm) to play the role of photocatalytic oxidation. The larger the proportion of carbon/nitrogen element doping is, the larger the red shift generated by the maximum absorption wavelength of the sample is, the more full utilization of visible light is, but when the carbon/nitrogen element doping is excessive, the catalytic efficiency of titanium dioxide is slightly reduced because the recombination rate of photogenerated electrons and holes is increased, so that a coordination relationship needs to be achieved between the number of oxygen vacancies replaced by nitrogen element and the recombination rate of electron holes to ensure higher photocatalytic efficiency, and therefore, the weight ratio of the titanium dioxide colloid to the high molecular compound is (1) - (1.
For example, the carbon/nitrogen doped titanium dioxide is prepared by the following steps: firstly, measuring 10mL of butyl titanate, adding the butyl titanate into 40mL of absolute ethyl alcohol, and stirring for 1h by using a magnetic stirrer at the speed of 150 r/min; then 0.6mL of glacial acetic acid is dripped into 3mL of deionized water to prepare an inhibitor, and the pH value is kept between 2 and 3; mixing the two solutions, stirring at 150r/min for 1.5h,standing to obtain colloid. The colloid was redispersed in 200mL of ethanol containing a suitable amount of polyvinylpyrrolidone PVP (MW =40,000). After complete evaporation of the ethanol at 55 deg.C, PVP/TiO was added 2 The composite material is thermally treated at 660 ℃ to form C/N/TiO 2 Composite and ground to a black powder, named C/N @ TiO 2 It will be appreciated that the size of the milling may be on the nanometer or micrometer scale, with milling of different sizes being performed as required.
The application also provides a metal oxide doped C/N @ TiO 2 Of metal oxide doped with C/N @ TiO 2 The material comprises metal oxide and C/N @ TiO 2 A material, wherein the molar ratio of titanium ions to metal ions is (1: 1. 2: 1. 3: 1. 4: 1. 5: 1. 6: 1. 7: 1. 8: 1. 9: 1. 10: 1. 11: 1. 12:1 is not particularly limited, and is selected as needed.
I.e. at C/N @ TiO 2 On the basis of the material, metal oxide is further compounded, and the catalytic capability of the titanium dioxide under visible light is further improved.
Due to the particularity of anions, on one hand, the non-metal doped photocatalyst is difficult to obtain by simple chemical methods such as coprecipitation and the like, so the invention provides a simple method for doping titanium dioxide by C and N, simplifies the doping process and is beneficial to realizing industrialization. On the other hand, anion doping inherently presents a serious problem of recombination of a large number of charge carriers, which greatly limits their photocatalytic ability in the dark. Thus, by designing a visible-light photocatalyst system, enhanced photocatalytic efficiency through minimized charge carrier recombination may be provided. Some of its photocatalytic activity is stored in "memory" so that once photoexcitation is turned off, the catalyst remains active for a long period of time.
Wherein, the visible light photocatalyst system refers to widening TiO under the illumination condition 2 The light absorption range of the function plays a role, the recombination of electron-hole pairs is inhibited, and a storage system of excited electrons can be realized. Polyvinyl pyridineThe pyrrolidone PVP is used as a high molecular source, and a carbon nitrogen layer is formed on the surface of the titanium dioxide, and meanwhile, a three-dimensional carbon nitrogen network can be formed among titanium dioxide particles, so that the electronic storage performance is improved, and the electricity conversion efficiency is improved.
Since light irradiation is a necessary condition for titanium dioxide to exhibit photocatalytic activity, in some scenes, it is necessary to exhibit a bactericidal function even under dark conditions at night. Therefore, the titanium dioxide is provided with electrons under dark conditions and forms holes by means of the composite metal oxide, so that a continuous sterilization function can be exerted. Under the condition of illumination, C/N @ TiO 2 The generated electrons can move to the metal oxide nanoparticles, the electrons are captured on the surfaces of the metal oxide nanoparticles, the metal oxide is reduced to metal ion nanoparticles, the capture of charge carriers can reduce the recombination rate of e/h + pairs, so that the service life of the charge carriers is prolonged, and the photoactivity is improved. When visible light is turned off, the metal oxide nanoparticles release electrons to C/N @ TiO 2 In a matrix, the matrix can react with oxygen/water to generate free radicals by the following reaction:
O 2 +e-→O 2 - ；2O 2 - +2H→2·HO+O 2
wherein O is 2 - And OH are highly reactive radicals and can be used to dope metal oxides with C/N @ TiO 2 The material can continuously exert the sterilization effect under the condition of no light.
Further, the metal oxide includes one or a mixture of iron oxide and zinc oxide.
Further, metal oxide is doped with C/N @ TiO 2 The preparation method of the material comprises the following steps: mixing C/N @ TiO 2 Crushing the material into powder, and adding C/N @ TiO 2 Mixing the material with metal oxide powder, calcining at 500-700 deg.C in vacuum or protective gas atmosphere to obtain C/N @ TiO 2 A composite material with a metal oxide.
Mixing C/N @ TiO 2 The material is mixed with metal oxide powder and then calcined to remove impuritiesMeanwhile, the specific surface area of the composite material is increased, and the catalytic efficiency is improved.
The compounding of the metal oxide can make up the problem of narrow light absorption band gap of titanium dioxide, broaden the light absorption range and improve the utilization rate of the photocatalyst to solar energy.
On the other hand, because the energy levels of titanium dioxide and metal oxide are different, when the titanium dioxide and the metal oxide are compounded and contacted with each other, the transportation and separation of photogenerated carriers can occur due to light excitation. The holes and the photo-generated electrons can respectively move to a valence band and a conduction band with different energy levels, namely, the metal oxide and the titanium dioxide are compounded, so that the separation of the photo-generated electrons and the holes can be promoted, and the photoelectric conversion efficiency is improved.
C/N@TiO 2 The composite material with the metal oxide can realize the sterilization function under the dark condition.
For example, metal oxide doped C/N @ TiO 2 The preparation method of the material comprises the following steps: mixing C/N @ TiO 2 The powder and the metal oxide powder are evenly mixed according to a certain proportion and calcined for 2 hours at 600 ℃ to prepare the metal oxide doped with C/N @ TiO 2 A photocatalytic composite material.
Further, as shown in FIG. 3, the present application provides a metal oxide doped with C/N @ TiO 2 Of a metal oxide doped with C/N @ TiO 2 The nano-fiber comprises nano-fiber and metal oxide doped C/N @ TiO 2 Of metal oxide doped with C/N @ TiO 2 The material of (2) is supported on the nanofibers.
That is, the composite particles are loaded on the nano-fibers, so that the contact area of the particles and pathogenic bacteria can be obviously increased, and the antibacterial capability of the material is improved.
Further, metal oxide is doped with C/N @ TiO 2 The preparation method of the nano-fiber comprises the following steps: doping metal oxide with C/N @ TiO 2 Adding the material and the polymer into a solvent, and stirring to obtain a polymer spinning solution; adding the polymer spinning solution into an injector of an electrostatic spinning device, and spinning on a spinning needle head and a receiving platform of the injector under voltage to obtain the metal oxide doped with C/N @ TiO 2 The nanofiber of (4).
The polymer is used for preparing the spinning, such as, for example, polyvinyl chloride, acrylic, vinylon, acetate, and the like, and the solvent is used for dissolving the polymer without limitation.
Further, metal oxide is doped with C/N @ TiO 2 The mass ratio of the material (2) to the polymer is (1: 10) - (1: 10. 1: 9. 1: 8. 1: 7. 1:6. 1: 5. 1: 4. 1: 3. 1: 2. 1:1. regulating and controlling metal oxide doped C/N @ TiO loaded on nano fiber according to regulated mass ratio 2 The amount of the material (b) is not particularly limited, and is selected as needed.
The polymer is polyacrylonitrile. The solvent is N, N-dimethylformamide and is used for dissolving polyacrylonitrile.
For example, metal oxide doped C/N @ TiO 2 The preparation method of the nanofiber comprises the following steps: doping 1g of metal oxide with C/N @ TiO 2 The composite material and 1.5g of polyacrylonitrile are added into 10mLN and N-dimethylformamide, and stirred for 12 hours at normal temperature to obtain uniform electrostatic spinning precursor solution. The electrospinning precursor solution was placed in a 15mL plastic syringe with a needle, the type of which was a 20 gauge metal needle. The syringe was connected to a syringe pump, the injection rate was controlled at 1.00mL/h, a metal receiving plate coated with aluminum foil was placed 10cm from the needle, and a high voltage of 12kV was applied between the needle and the receiving plate. Finally obtaining the nano-fiber loaded and doped carbon/nitrogen @ TiO through electrostatic spinning 2 The composite fiber is named as metal oxide doped C/N @ TiO 2 And (3) nano fibers.
Further, this application still provides a sterilization apparatus, and sterilization apparatus includes the filter screen, and the filter screen is provided with metal oxide doping C/N @ TiO 2 The nanofiber of (4). For example, the sterilization equipment can be an air purifier, the air purifier is provided with a filter screen, and the filter screen is provided with metal oxide doped C/N @ TiO 2 The nano-fiber has a sterilization effect under the illumination condition or the dark condition, and the sterilization environment of the titanium dioxide is expanded. By using metal oxide and C/N @ TiO 2 The doped composite can continuously play the antibacterial effect under the condition of no light, and is made of the materialsThe foundation is laid for the antibacterial effect of the air purifier to be exerted in 24 hours. On the other hand, the supported metal oxide doped with C/N @ TiO is obtained by electrostatic spinning 2 The nano-fiber increases the contact probability and contact area of the particles and germs, thereby ensuring the antibacterial effect.
That is, according to the first aspect of the present application, a simple method is adopted to realize carbon/nitrogen doping of titanium dioxide, improve the photocatalytic effect of titanium dioxide in the visible light wavelength range, and enhance the sterilization capability and efficiency of titanium dioxide under indoor illumination.
In the second aspect, the metal oxide doped C/N @ TiO is prepared by compounding the metal oxide with carbon/nitrogen doped titanium dioxide 2 The material of (4) provides a material which can exhibit a sterilizing function even under dark conditions.
In a third aspect, the preparation of metal oxide doped C/N @ TiO by electrospinning 2 The nano-fiber forms a sterilizing fiber material with larger specific surface area so as to realize high-efficiency sterilization performance under dark conditions.
In order to realize that titanium dioxide has better sterilization effect under the illumination or dark condition, the application prepares the metal oxide doped with C/N @ TiO 2 The material is applied to sterilization equipment, such as an air purifier, so that the air purifier continuously maintains high-efficiency sterilization performance.
Examples
1. Experimental Material
TABLE 1 list of experimental materials
2. Detailed description of the preferred embodiments
Preparation method of carbon/nitrogen doped titanium dioxide
The influence of the C/N doping amount on the antibacterial performance of the titanium dioxide is as follows: m TiO 2 : m PVP range is 1:1-1: 6.
Example 1:
the preparation method of the carbon/nitrogen doped titanium dioxide comprises the following steps: (the weight ratio of titanium dioxide colloid to the polyvinylpyrrolidone is 1.
Firstly, measuring 10mL of butyl titanate, adding the butyl titanate into 40mL of absolute ethyl alcohol, and stirring for 1h by using a magnetic stirrer at the speed of 150 r/min; then 0.6mL of glacial acetic acid is dripped into 3mL of deionized water to prepare an inhibitor, and the pH value is kept between 2 and 3; mixing the two solutions, stirring at 150r/min for 1.5h, and standing to obtain colloid. The colloid was redispersed in 200mL of ethanol containing 2.25g of PVP. After complete evaporation of the ethanol at 55 deg.C, PVP/TiO was added 2 The composite material is thermally treated at 660 ℃ to form C/N/TiO 2 Composite and ground to a black powder, named C/N @ TiO 2 。
Example 2:
the preparation method of the carbon/nitrogen doped titanium dioxide comprises the following steps: (the weight ratio of titanium dioxide colloid to the polyvinylpyrrolidone is 1.
Firstly, measuring 10mL of butyl titanate, adding the butyl titanate into 40mL of absolute ethyl alcohol, and stirring for 1h by using a magnetic stirrer at the speed of 150 r/min; then 0.6mL of glacial acetic acid is dripped into 3mL of deionized water to prepare an inhibitor, and the pH value is kept between 2 and 3; mixing the two solutions, stirring at 150r/min for 1.5h, and standing to obtain colloid. The colloid was redispersed in 200mL of ethanol containing 4.50g of PVP. After ethanol was completely evaporated at 55 deg.C, PVP/TiO was added 2 The composite material is thermally treated at 660 ℃ to form C/N/TiO 2 Composite and ground to a black powder, named C/N @ TiO 2 。
Example 3:
the preparation method of the carbon/nitrogen doped titanium dioxide comprises the following steps: (the weight ratio of titanium dioxide colloid to the polyvinylpyrrolidone is 1.
Firstly, measuring 10mL of butyl titanate, adding the butyl titanate into 40mL of absolute ethyl alcohol, and stirring for 1h by using a magnetic stirrer at the speed of 150 r/min; then 0.6mL of glacial acetic acid is dripped into 3mL of deionized water to prepare an inhibitor, and the pH value is kept between 2 and 3; mixing the two solutions, stirring at 150r/min for 1.5h, and standing to obtain colloid. The colloid was redispersed in 200mL of ethanol containing 9.0g of PVP. After ethanol was completely evaporated at 55 deg.C, PVP/TiO was added 2 The composite material is thermally treated at 660 ℃ to form C/N/TiO 2 Compounding and grinding to blackPowder, named C/N @ TiO 2 。
Example 4:
the preparation method of the carbon/nitrogen doped titanium dioxide comprises the following steps: (the weight ratio of titanium dioxide colloid to the polyvinylpyrrolidone is 1.
Firstly, measuring 10mL of butyl titanate, adding the butyl titanate into 40mL of absolute ethyl alcohol, and stirring for 1h by using a magnetic stirrer at the speed of 150 r/min; then 0.6mL of glacial acetic acid is dripped into 3mL of deionized water to prepare an inhibitor, and the pH value is kept between 2 and 3; mixing the obtained solutions, stirring at 150r/min for 1.5h, and standing to obtain colloid. The colloid was redispersed in 200mL of ethanol containing 13.5g of PVP. After ethanol was completely evaporated at 55 deg.C, PVP/TiO was added 2 The composite material is thermally treated at 660 ℃ to form C/N/TiO 2 Composite and ground to a black powder, named C/N @ TiO 2 。
The influence of the doping amount of the metal oxide on the antibacterial performance of the titanium dioxide is as follows: nTi: nM (metal) ranges are (1.
Taking the C/N @ TiO prepared under the conditions of example 3 2 The powder was used in examples 5-13.
Examples 5-8 examples of ZnO
Example 5:
s1.ZnO and C/N @ TiO 2 Doping of
Mixing C/N @ TiO 2 The powder was mixed with ZnO powder uniformly, (nTi: nZn = 2) 2 A photocatalytic composite material.
S2, nano-fiber loaded metal oxide doped with C/N @ TiO 2 Preparation of the Material
1g of ZnO is doped with carbon/nitrogen @ TiO 2 The composite material and 1.5g of polyacrylonitrile (12%) are added into 10mLN, N-dimethylformamide, and stirred for 12h at normal temperature, so as to obtain uniform electrostatic spinning precursor solution. The electrospinning precursor solution was placed in a 15mL plastic syringe with a needle, the type of which was a 20 gauge metal needle. The syringe was connected to a syringe pump, the injection rate was controlled at 1.00mL/h, a metal receiving plate coated with aluminum foil was placed 10cm from the needle, and a high voltage of 12kV was applied between the needle and the receiving plate. By passingElectrostatic spinning to finally obtain the nano-fiber loaded doped carbon/nitrogen @ TiO 2 The composite fiber of (2) is named as ZnO-C/N @ TiO 2 。
Example 6:
s1.ZnO and C/N @ TiO 2 Doping of
Mixing C/N @ TiO 2 The powder is respectively and uniformly mixed with ZnO powder, (nTi: nZn =4: 1), and the mixture is calcined for 2h at 600 ℃ to prepare ZnO doped with C/N @ TiO 2 A photocatalytic composite material.
S2, the operation steps are the same as those of the embodiment 5.
Example 7:
s1.ZnO and C/N @ TiO 2 Doping of
Mixing C/N @ TiO 2 The powder is respectively and uniformly mixed with ZnO powder, (nTi: nZn = 6) 2 A photocatalytic composite material.
S2, the operation steps are the same as those of the embodiment 5.
Example 8:
s1.ZnO and C/N @ TiO 2 Doping of
Mixing C/N @ TiO 2 The powder was mixed with ZnO powder uniformly, (nTi: nZn = 12) 2 A photocatalytic composite material.
S2, the operation steps are the same as those of the embodiment 5.
Examples 9 to 11 are Fe 2 O 3 Examples of (2)
Example 9:
S1.Fe 2 O 3 with C/N @ TiO 2 Doping of
Mixing C/N @ TiO 2 The powder is respectively mixed with Fe 2 O 3 The powders were mixed well, (nTi: nfet = 1), calcined at 600 ℃ for 2h to produce Fe 2 O 3 Doped C/N @ TiO 2 A photocatalytic composite material.
S2, nano-fiber loaded metal oxide doped with C/N @ TiO 2 Preparation of the Material
Mixing 1g of Fe 2 O 3 Doped carbon/nitrogen @ TiO 2 With 1.5g of polyacrylonitrile (12%) was added10mLN, N-dimethylformamide, and stirring at normal temperature for 12h to obtain a uniform electrospinning precursor solution. The electrospinning precursor solution was placed in a 15mL plastic syringe with a needle, the type of which was a 20 gauge metal needle. The syringe was connected to a syringe pump, the injection rate was controlled at 1.00mL/h, a metal receiving plate coated with aluminum foil was placed 10cm from the needle, and a high voltage of 12kV was applied between the needle and the receiving plate. Finally obtaining the nanofiber-loaded Fe through electrostatic spinning 2 O 3 Doped carbon/nitrogen @ TiO 2 Composite fiber of (4), named Fe 2 O 3 -C/N@TiO 2 。
Example 10:
S1.Fe 2 O 3 with C/N @ TiO 2 Doping of
Mixing C/N @ TiO 2 The powder is mixed with Fe 2 O 3 The powders were mixed well, (nTi: nfet = 3) and calcined at 600 ℃ for 2h to produce Fe 2 O 3 Doped C/N @ TiO 2 A photocatalytic composite material.
S2, the operation steps are the same as those of the embodiment 9.
Example 11:
S1.Fe 2 O 3 with C/N @ TiO 2 Doping of
Mixing C/N @ TiO 2 The powder is mixed with Fe 2 O 3 The powders were mixed well, (nTi: nfet =5 2 O 3 Doped C/N @ TiO2 photocatalytic composite material.
S2, the operation steps are the same as those of the embodiment 9.
Example 12: fe 2 O 3 + ZnO optimum addition ratio (4
S1.Fe 2 O 3 + ZnO and C/N @ TiO 2 Doping of
Mixing C/N @ TiO 2 The powder is respectively mixed with Fe 2 O 3 And ZnO powder are uniformly mixed, (nTi: nFe: nZn =4: 0.5 2 O 3 + ZnO doped C/N @ TiO2 photocatalytic composite material.
S2, nano-fiber loaded metal oxide doped with C/N @ TiO 2 Preparation of the Material
Mixing 1g of Fe 2 O 3 + ZnO doped C/N @ TiO 2 The composite material and 1.5g of polyacrylonitrile (12%) are added into 10mLN, N-dimethylformamide, and stirred for 12h at normal temperature, so as to obtain uniform electrostatic spinning precursor solution. And (3) placing the electrospinning precursor liquid into a 15mL plastic syringe with a needle, wherein the needle is a 20-size metal needle. The syringe was connected to a syringe pump, the injection rate was controlled at 1.00mL/h, a metal receiving plate coated with aluminum foil was placed 10cm from the needle, and a high voltage of 12kV was applied between the needle and the receiving plate. Finally obtaining the nanofiber-loaded Fe through electrostatic spinning 2 O 3 + ZnO doped C/N @ TiO 2 Composite fiber of (2), named Fe 2 O 3 +ZnO-C/N@TiO 2 。
And (3) effect comparison:
the antibacterial performance of the prepared antibacterial material under the conditions of visible light irradiation and no light is tested by referring to a method for testing the antibacterial performance of the photocatalytic antibacterial material and the product under the visible light irradiation and an evaluation method. For C/N @ TiO 2 Metal oxide doped C/N @ TiO 2 The materials are respectively subjected to antibacterial performance tests, and the proportion range is determined.
According to the experimental result, the weight ratio of the determined titanium dioxide colloid to the macromolecular compound is mTiO 2 : mPVP (polyvinylpyrrolidone) ranges from (1.
According to the experimental results, the determined molar ratio of titanium ions to metal ions is nTi: nMO (metal oxide) ranges from (1.
The method for testing the sterilization performance of the new material comprises the following steps:
see GB/T30706-2014 test method and evaluation of the antibacterial performance of the photocatalytic antibacterial material and the product under the irradiation of visible light.
(1) And respectively carrying out antibacterial performance tests on the titanium dioxide powder doped with different amounts of C/N elements under the conditions of visible light irradiation/darkness to determine the range of the C/N doping proportion.
(2) Under the condition of visible light irradiation/darkness, the composite C/N @ TiO containing different kinds of metal oxides with different masses 2 Nanofiber materialAnd respectively carrying out antibacterial performance tests on the materials to determine the doping range of the metal oxide.
TABLE 2 comparison of antibacterial Properties of photocatalytic antibacterial Material
The bacteriostatic conditions of the carbon/nitrogen-coated titanium dioxide and the catalytic material compounded with the metal oxide under the visible light and dark conditions are shown in table 2. In Table 2, the titanium dioxide without carbon nitrogen coating is shown in number 1, and as a blank example, the titanium dioxide without carbon nitrogen coating has a low bacteriostatic efficiency in the absence of light, indicating that the carbon/nitrogen-doped TiO material is 2 Can improve the antibacterial effect. Carbon/nitrogen doped TiO 2 With the compounding with metal oxide, the bacteriostatic effect is good.
The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the specification and the drawings, or any other related technical fields directly/indirectly using the inventive concept are included in the scope of the present invention.
Claims (10)
1. C/N @ TiO 2 Material, characterized in that said C/N @ TiO 2 The material comprising TiO 2 Particles and coating on the TiO 2 And the C/N layer is a three-dimensional net structure.
2. C/N @ TiO as claimed in claim 1 2 The preparation method of the material is characterized in that the C/N @ TiO 2 The preparation method of the material comprises the following steps:
preparing titanium dioxide colloid;
dispersing the titanium dioxide colloid and the high molecular compound in an organic solvent, and removing the organic solvent to obtain a composite material of the high molecular compound and the titanium dioxide colloid;
the composite material of the macromolecular compound and titanium dioxide colloid is placed in vacuum or protective gas atmosphere, calcined at the temperature of 500-700 ℃, and after calcination, C/N @ TiO is obtained 2 A material.
3. C/N @ TiO as claimed in claim 2 2 The preparation method of the material is characterized in that the preparation steps of the titanium dioxide colloid comprise:
adding butyl titanate into absolute ethyl alcohol, and stirring to obtain a butyl titanate solution;
adding an inhibitor aqueous solution into the butyl titanate solution to obtain a mixed solution, keeping the pH value within the range of 2-3, stirring, and standing to obtain the titanium dioxide colloid;
and/or the high molecular compound is polyvinylpyrrolidone;
and/or the organic solvent is ethanol;
and/or the weight ratio of the titanium dioxide colloid to the high molecular compound is (1.
4. Metal oxide doped C/N @ TiO 2 The material is characterized in that the metal oxide is doped with C/N @ TiO 2 Comprises a metal oxide and the C/N @ TiO of claim 1 2 The material, wherein the molar ratio of titanium ions to metal ions is (1.
5. The metal oxide doped C/N @ TiO of claim 4 2 The material of (2), wherein the metal oxide comprises one or a mixture of iron oxide and zinc oxide.
6. The metal oxide doped C/N @ TiO of claim 4 or 5 2 The preparation method of the material is characterized by comprising the following steps: mixing the C/N @ TiO 2 MaterialCrushing into powder, and adding the C/N @ TiO 2 Mixing the material with the metal oxide powder, placing the mixture in vacuum or protective gas atmosphere, calcining the mixture at 500-700 ℃, and obtaining the metal oxide doped with C/N @ TiO 2 The material of (2).
7. Metal oxide doped C/N @ TiO 2 The nanofiber is characterized in that the metal oxide is doped with C/N @ TiO 2 Comprising nanofibers and a metal oxide doped with C/N @ TiO according to any one of claims 4 or 5 2 The metal oxide is doped with C/N @ TiO 2 Is supported on the nanofibers.
8. The metal oxide doped C/N @ TiO of claim 7 2 The preparation method of the nanofiber is characterized by comprising the following steps:
doping metal oxide with C/N @ TiO 2 Adding the material and the polymer into a solvent, and stirring to obtain a polymer spinning solution;
adding the polymer spinning solution into an injector of an electrostatic spinning device, and spinning on a spinning needle head and a receiving platform of the injector under voltage to obtain the metal oxide doped with C/N @ TiO 2 The nanofiber of (4).
9. The metal oxide doped C/N @ TiO of claim 8 2 The preparation method of the nanofiber is characterized in that the metal oxide is doped with C/N @ TiO 2 The mass ratio of the material (1) to the polymer is (1;
the polymer is polyacrylonitrile;
the solvent is N, N-dimethylformamide.
10. A sterilization apparatus, comprising a filter screen provided with the metal oxide doped C/N @ TiO of claim 7 2 The nanofiber of (4).
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060210798A1 (en) * | 2005-03-16 | 2006-09-21 | Clemens Burda | Doped metal oxide nanoparticles and methods for making and using same |
| CN101905153A (en) * | 2010-07-21 | 2010-12-08 | 江苏大学 | Preparation method and application of ZnO-doped TiO2 composite hollow sphere |
| CN102527421A (en) * | 2011-11-10 | 2012-07-04 | 重庆工商大学 | C and N dual-doped nano TiO2 photochemical catalyst and preparation method thereof |
| CN104056612A (en) * | 2014-05-29 | 2014-09-24 | 浙江理工大学 | Preparation method of metallic oxide/silicon dioxide hybridized nanofiber photocatalytic material |
| CN106245158A (en) * | 2016-08-15 | 2016-12-21 | 江苏师范大学 | The preparation method of nitrogen-doped carbon/dioxide composite nanofiber carrier |
| CN106287978A (en) * | 2016-09-13 | 2017-01-04 | 黄于展 | Nano composite antibacterial high voltage electric field anion defecator |
| CN107337234A (en) * | 2017-08-09 | 2017-11-10 | 张家港市六福新材料科技有限公司 | A kind of preparation method of zinc oxide composite titania material |
| CN108160122A (en) * | 2016-12-07 | 2018-06-15 | 中国科学院大连化学物理研究所 | Composite material and composite material are the catalyst of carrier and its preparation and application |
| CN110499497A (en) * | 2019-08-26 | 2019-11-26 | 南方科技大学 | Titanium dioxide nano-film preparation method and titanium dioxide nano-film |
| US20200122130A1 (en) * | 2018-10-22 | 2020-04-23 | Soochow University | Two-dimensional nitrogen-doped carbon-based titanium dioxide composite material, and preparation method and application thereof for degrading and removing organic pollutants in water |
| CN111530485A (en) * | 2019-11-25 | 2020-08-14 | 中国石油大学(华东) | Carbon and nitrogen co-doped titanium dioxide nano material and preparation method and application thereof |
| CN113578361A (en) * | 2021-07-22 | 2021-11-02 | 南京工业大学 | Nano C/N/Si/TiO2Preparation method of photocatalytic composite material |
-
2022
- 2022-10-12 CN CN202211250824.5A patent/CN115530183B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060210798A1 (en) * | 2005-03-16 | 2006-09-21 | Clemens Burda | Doped metal oxide nanoparticles and methods for making and using same |
| CN101905153A (en) * | 2010-07-21 | 2010-12-08 | 江苏大学 | Preparation method and application of ZnO-doped TiO2 composite hollow sphere |
| CN102527421A (en) * | 2011-11-10 | 2012-07-04 | 重庆工商大学 | C and N dual-doped nano TiO2 photochemical catalyst and preparation method thereof |
| CN104056612A (en) * | 2014-05-29 | 2014-09-24 | 浙江理工大学 | Preparation method of metallic oxide/silicon dioxide hybridized nanofiber photocatalytic material |
| CN106245158A (en) * | 2016-08-15 | 2016-12-21 | 江苏师范大学 | The preparation method of nitrogen-doped carbon/dioxide composite nanofiber carrier |
| CN106287978A (en) * | 2016-09-13 | 2017-01-04 | 黄于展 | Nano composite antibacterial high voltage electric field anion defecator |
| CN108160122A (en) * | 2016-12-07 | 2018-06-15 | 中国科学院大连化学物理研究所 | Composite material and composite material are the catalyst of carrier and its preparation and application |
| CN107337234A (en) * | 2017-08-09 | 2017-11-10 | 张家港市六福新材料科技有限公司 | A kind of preparation method of zinc oxide composite titania material |
| US20200122130A1 (en) * | 2018-10-22 | 2020-04-23 | Soochow University | Two-dimensional nitrogen-doped carbon-based titanium dioxide composite material, and preparation method and application thereof for degrading and removing organic pollutants in water |
| CN110499497A (en) * | 2019-08-26 | 2019-11-26 | 南方科技大学 | Titanium dioxide nano-film preparation method and titanium dioxide nano-film |
| CN111530485A (en) * | 2019-11-25 | 2020-08-14 | 中国石油大学(华东) | Carbon and nitrogen co-doped titanium dioxide nano material and preparation method and application thereof |
| CN113578361A (en) * | 2021-07-22 | 2021-11-02 | 南京工业大学 | Nano C/N/Si/TiO2Preparation method of photocatalytic composite material |
Non-Patent Citations (2)
| Title |
|---|
| DOLAT D ET AL.: "One-step, hydrothermal synthesis of nitrogen, carbon co-doped titanium dioxide (N,C TiO2) photocatalysts. Effect of alcohol degree and chain length as carbon dopant precursors on photocatalytic activity and catalyst deactivation", 《JOURNALS & BOOKS》, vol. 1, pages 81 - 89 * |
| 王西贤 等: "PAN/TiO2抗菌复合纳米纤维的制备及性能研究", 《丝绸》, vol. 57, no. 7, pages 19 * |
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