CN118120764B - Preparation method of multifunctional zinc oxide-based nano composite antibacterial powder - Google Patents
Preparation method of multifunctional zinc oxide-based nano composite antibacterial powder Download PDFInfo
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- CN118120764B CN118120764B CN202410270774.XA CN202410270774A CN118120764B CN 118120764 B CN118120764 B CN 118120764B CN 202410270774 A CN202410270774 A CN 202410270774A CN 118120764 B CN118120764 B CN 118120764B
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 78
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 61
- 239000000843 powder Substances 0.000 title claims abstract description 50
- 239000002114 nanocomposite Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims abstract description 32
- 238000001035 drying Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002244 precipitate Substances 0.000 claims abstract description 24
- 239000002211 L-ascorbic acid Substances 0.000 claims abstract description 16
- 235000000069 L-ascorbic acid Nutrition 0.000 claims abstract description 16
- 229960005070 ascorbic acid Drugs 0.000 claims abstract description 16
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 16
- 239000008367 deionised water Substances 0.000 claims abstract description 14
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 150000001879 copper Chemical class 0.000 claims abstract description 11
- 150000003751 zinc Chemical class 0.000 claims abstract description 11
- 239000004094 surface-active agent Substances 0.000 claims abstract description 10
- 150000000703 Cerium Chemical class 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 150000002603 lanthanum Chemical class 0.000 claims abstract description 6
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 claims abstract description 6
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 20
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 18
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 10
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 9
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 claims description 9
- 239000004246 zinc acetate Substances 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 6
- -1 amine hydroxide Chemical class 0.000 claims description 5
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 claims description 4
- VQEHIYWBGOJJDM-UHFFFAOYSA-H lanthanum(3+);trisulfate Chemical compound [La+3].[La+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O VQEHIYWBGOJJDM-UHFFFAOYSA-H 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- CQLFBEKRDQMJLZ-UHFFFAOYSA-M silver acetate Chemical compound [Ag+].CC([O-])=O CQLFBEKRDQMJLZ-UHFFFAOYSA-M 0.000 claims description 3
- 229940071536 silver acetate Drugs 0.000 claims description 3
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 3
- 239000011592 zinc chloride Substances 0.000 claims description 3
- 235000005074 zinc chloride Nutrition 0.000 claims description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 3
- 229960001763 zinc sulfate Drugs 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 2
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 54
- 239000000126 substance Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001954 sterilising effect Effects 0.000 abstract description 5
- 238000005034 decoration Methods 0.000 abstract description 3
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 3
- 230000002155 anti-virotic effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 29
- 230000001699 photocatalysis Effects 0.000 description 11
- 241000191967 Staphylococcus aureus Species 0.000 description 10
- 241000588724 Escherichia coli Species 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 7
- 238000006731 degradation reaction Methods 0.000 description 7
- 239000003973 paint Substances 0.000 description 7
- 230000001580 bacterial effect Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000001963 growth medium Substances 0.000 description 3
- 229910052746 lanthanum Inorganic materials 0.000 description 3
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000000840 anti-viral effect Effects 0.000 description 2
- 210000000170 cell membrane Anatomy 0.000 description 2
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229940123208 Biguanide Drugs 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000004283 biguanides Chemical class 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229930182478 glucoside Natural products 0.000 description 1
- 150000008131 glucosides Chemical class 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011799 hole material Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000002458 infectious effect Effects 0.000 description 1
- GDHNMQIBSKTFPO-UHFFFAOYSA-N lanthanum silver Chemical compound [Ag].[La] GDHNMQIBSKTFPO-UHFFFAOYSA-N 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- 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
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
- A01N59/20—Copper
-
- 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
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- 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
- A01P3/00—Fungicides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
- B01J23/8933—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/8953—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with zinc, cadmium or mercury
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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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/10—Heat treatment in the presence of water, e.g. steam
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- B01D—SEPARATION
- B01D2257/00—Components to be removed
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- B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
The invention discloses a preparation method of multifunctional zinc oxide-based nano composite antibacterial powder, which belongs to the technical field of nano zinc oxide preparation and comprises the following steps: (1) Adding zinc salt, copper salt, cerium salt, lanthanum salt, silver salt and deionized water into a reaction kettle, and performing hydrothermal reaction to obtain a solution A; (2) Adding a surfactant to the solution A to react with a pH regulator, and then adding L-ascorbic acid to obtain a solution B; (3) Cooling the solution B to room temperature, and filtering out water to obtain a precipitate C; (4) And (3) drying the precipitate C in a drying oven to obtain the multifunctional zinc oxide-based nano composite antibacterial powder. The method disclosed by the invention is simple in process and easy to control the reaction process, and the prepared zinc oxide-based nano composite antibacterial powder has excellent multiple effects of sterilization, mildew resistance, antivirus, formaldehyde removal and odor removal, still has excellent antibacterial, mildew resistance and formaldehyde removal capabilities after ultraviolet irradiation for 3250 hours (simulating daily conditions for ten years), and has wide application prospects in the fields of daily chemicals, home decoration and the like.
Description
Technical Field
The invention relates to the technical field of nano zinc oxide preparation, in particular to a preparation method of multifunctional zinc oxide-based nano composite antibacterial powder.
Background
The antibacterial industry in china began in 1998. In the same year, the antibacterial technology of the institute of physical and chemical technology of the academy of sciences of China and the joint hand of the sea group first bring antibacterial household electrical appliances to the market, have been extremely successful, and have opened the development of the antibacterial industry of China. Nowadays, antibacterial materials are widely used in various fields of home decoration, health, food, medicine, industry and agriculture, environmental protection and the like.
In the current market, the application in the field of home-use mainly uses organic antibacterial materials, mainly comprises Ji Lin salts, quaternary ammonium salts, phenolic alcohol esters, biguanides, imidazoles and the like, and is characterized by good antibacterial property, strong selectivity, quick antibacterial effect and mature preparation process. The antibacterial mechanism is mainly that an antibacterial material enters the interior of a cell by combining anions on the surface of a microbial cell membrane or reacts with-SH to cause protein denaturation, so that the synthesis of the cell membrane is hindered, and the growth and propagation of microorganisms are inhibited, thereby playing an antibacterial effect. But the organic antibacterial material has the defects of short effectiveness, poor thermal stability, intolerance to ultraviolet irradiation, poor safety, easiness in causing bacteria to generate drug resistance and the like.
Compared with organic antibacterial materials, the photocatalytic antibacterial material is more suitable for fields of daily use chemicals, home decoration, paint and the like due to a unique action mechanism. The photocatalysis type antibacterial material mainly comprises semiconductor oxides with n-type forbidden band width such as TiO 2、ZnO、SiO2, and the nano zinc oxide powder (NP) has the characteristics of no toxicity, stable performance, good safety, rich raw material sources and the like. The antibacterial action mechanism is mainly that metal oxide is taken as a catalytic active center, electron transition is generated through absorbing photoelectron energy to generate positive charge holes, and oxygen and water vapor in the air are catalyzed to generate hydroxyl free radicals and superoxide anions with strong oxidation-reduction capability. Part of the strong oxidizing substances can be directly aggregated in organisms, and the sterilizing effect can be exerted after the concentration reaches a certain threshold value; the other part reacts with the substances such as glucoside, protein, unsaturated fatty acid and the like of the bacterial cells, and the substances are oxidized and decomposed to disorder the biochemical reaction of the cells, so that the growth and the reproduction of the bacteria are inhibited, and the antibacterial performance is generated.
Although zinc oxide is inexpensive, has suitable oxidation-reduction potential, is nontoxic and has high physicochemical stability, znO has some problems in use as a photocatalyst: (i) The forbidden bandwidth of zinc oxide is 3.37eV, the binding energy is large (60 eV), the ultraviolet light (only accounting for 3 percent of sunlight) absorption proportion is high, and the visible light absorption proportion is low; (ii) The photo-generated electron-hole pairs are easy to be combined, the carrier migration efficiency is low, and the chemical reaction at the semiconductor/liquid interface is delayed; (iii) zinc oxide has a very high photo-corrosiveness under irradiation. Therefore, the photocatalytic effect is not good.
Doping has been widely used as one of the most effective methods for enhancing electron conductivity and widening the spectrum of semiconductors by effectively reducing the band gap energy thereof, and by doping a metal element, an intermediate energy level can be established between a Valence Band (VB) and a Conduction Band (CB), thereby reducing the forbidden band width, realizing a response to the visible light band and thus effectively improving the photocatalytic activity.
Disclosure of Invention
The invention aims to provide a preparation method of multifunctional zinc oxide-based nano composite antibacterial powder, which has a good residual formaldehyde removal effect and excellent antibacterial, mildew-proof and formaldehyde removal capabilities.
In order to achieve the above purpose, the invention provides a preparation method of multifunctional zinc oxide-based nano composite antibacterial powder, which comprises the following steps:
(1) Adding zinc salt, copper salt, cerium salt, lanthanum salt silver salt and deionized water into a reaction kettle, and performing hydrothermal reaction to obtain a solution A;
(2) Adding a surfactant and a pH regulator into the solution A, regulating the pH value of the solution, continuously reacting, and adding L-ascorbic acid to obtain a solution B;
(3) Cooling the solution B to room temperature, taking out and filtering out water to obtain a precipitate C;
(4) And (3) drying the precipitate C in a drying oven to obtain the multifunctional zinc oxide-based nano composite antibacterial powder.
Preferably, the zinc salt in the step (1) is any one or a combination of several of zinc acetate, zinc chloride and zinc sulfate, the copper salt is any one or a combination of several of copper sulfate, copper chloride and copper sulfate, the cerium salt is any one or a combination of several of cerium nitrate and cerium chloride, the lanthanum salt is any one or a combination of several of lanthanum chloride and lanthanum sulfate, and the silver salt is one or a plurality of silver nitrate or silver acetate.
Preferably, in the step (1), the ratio of the zinc salt, the copper salt, the cerium salt, the lanthanum salt, the silver salt and the deionized water is 80-88g:3-5g:1.3-2.6g:0.8-1.6g:0.06-0.12g:1600mL.
Preferably, the hydrothermal reaction temperature in the step (1) is 70-90 ℃, and the hydrothermal reaction time in the step (1) is 100-150min.
Preferably, the surfactant in the step (2) is one or more of PVP, SDS, PEG, CTAB, the pH regulator is one or more of ammonia water, sodium hydroxide, sodium bicarbonate, potassium hydroxide, amine hydroxide and calcium hydroxide, and the pH value of the solution is 8-9.
Preferably, the addition amount of the surfactant in the step (2) is related to the content of zinc salt in the solution A, and the ratio of the surfactant to the zinc salt is 1-2g:100g, wherein the addition amount of the L-ascorbic acid is related to the content of copper salt in the solution A, and the ratio of the copper salt to the L-ascorbic acid is 0.5-1g:1g.
Preferably, the continuous reaction time in step (2) is 120-180min.
Preferably, in the step (4), the drying temperature of the drying oven is 100-120 ℃ and the drying time is 900-1000min.
Therefore, the preparation method of the multifunctional zinc oxide-based nano composite antibacterial powder has the following beneficial effects:
(1) The zinc oxide is doped and modified by copper, cerium, lanthanum, silver and other elements, and the effective separation of photo-generated electrons and holes of the zinc oxide is promoted by utilizing the synergistic effect of the copper, cerium, lanthanum, silver and other elements and zinc, so that the photocatalysis effect of the zinc is effectively enhanced, and the antibacterial capability of the nano zinc oxide is improved;
(2) By doping the modified zinc oxide with copper, cerium, lanthanum, silver and other elements, an intermediate energy level can be established between a Valence Band (VB) and a Conduction Band (CB), so that the forbidden band width is reduced, the response to a visible light wave band is realized, the photocatalytic activity is effectively improved, the mildew resistance of the nano zinc oxide is improved, and the formaldehyde degradation capability of the nano zinc oxide is improved.
(3) The surface active agent is used for modifying the photocatalytic antibacterial powder, so that the surface activity of the nano zinc oxide is improved, and the photocatalytic nano zinc oxide can keep the long-term antibacterial, mildew-proof, formaldehyde degrading and antiviral capabilities.
(4) The preparation method disclosed by the invention is simple in preparation process, rich in raw material sources and excellent in application prospect.
(5) The invention is convenient to use, and can be added into base materials such as paint and the like to be stirred uniformly, so that the product can be produced according to the original production process.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a flow chart of a preparation method of the multifunctional zinc oxide-based nano composite antibacterial powder;
FIG. 2 is an optical band gap diagram of the multifunctional zinc oxide-based nanocomposite antibacterial powder produced in examples 1-3 of the present invention;
FIG. 3 is a graph showing the antibacterial effect of the preparation samples of examples 1 to 3 on E.coli, FIG. 3a is a graph showing the growth of E.coli in a blank group, FIG. 3b is a graph showing the growth of E.coli after the preparation sample of example 1 is added to E.coli medium, FIG. 3c is a graph showing the growth of E.coli after the preparation sample of example 2 is added to E.coli medium, and FIG. 3d is a graph showing the growth of E.coli after the preparation sample of example 4 is added to E.coli medium;
Fig. 4 is a graph showing the antibacterial effect of the preparation samples of examples 1 to 3 on staphylococcus aureus, fig. 4a is a graph showing the growth of staphylococcus aureus in a blank group, fig. 4b is a graph showing the growth of staphylococcus aureus after the preparation sample of example 1 is added to a staphylococcus aureus culture medium, fig. 4c is a graph showing the growth of staphylococcus aureus after the preparation sample of example 2 is added to a staphylococcus aureus culture medium, and fig. 4d is a graph showing the growth of staphylococcus aureus after the preparation sample of example 4 is added to a staphylococcus aureus culture medium;
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
Example 1
The preparation method of the multifunctional zinc oxide-based nano composite antibacterial powder comprises the following steps:
(1) 80g of zinc acetate, 3g of copper sulfate, 1.3g of cerium nitrate, 0.8g of lanthanum chloride and 0.08g of silver nitrate are dissolved in 1.6L of deionized water, and then are subjected to hydrothermal reaction at 70 ℃ for 150min;
(2) Adding 0.8g PVP to the solution in the step (1), slowly dropwise adding ammonia water, regulating the pH value of the solution to 9, continuing to react for 120min, and adding 1.5g L-ascorbic acid;
(3) Cooling the solution in the step (2) to room temperature, taking out and filtering out water to obtain a precipitate;
(4) And (3) placing the precipitate in the step (3) in a drying oven for drying at 120 ℃ for 900min to obtain the multifunctional zinc oxide-based nano composite antibacterial powder.
Example 2
(1) 84G of zinc chloride, 4g of copper nitrate, 2g of cerium chloride, 1.2g of lanthanum sulfate and 0.09g of silver acetate are dissolved in 1.6L of deionized water, and then subjected to hydrothermal reaction at 80 ℃ for 120min;
(2) Adding 1.26gSDS to the solution in the step (1) and slowly dropwise adding sodium hydroxide solution, regulating the pH value of the solution to 8.5, continuing to react for 150min, and adding 3g of L-ascorbic acid;
(3) Cooling the solution in the step (2) to room temperature, taking out and filtering out water to obtain a precipitate;
(4) And (3) placing the precipitate in the step (3) in a drying oven for drying at 110 ℃ for 960min to obtain the multifunctional zinc oxide-based nano composite antibacterial powder.
Example 3
(1) 88G of zinc sulfate, 5g of copper nitrate, 2.6g of cerium chloride, 1.6g of lanthanum sulfate and 0.12g of silver nitrate are dissolved in 1.6L of deionized water, and then subjected to hydrothermal reaction at 90 ℃ for 100min;
(2) Adding 1.76g of PEG into the solution in the step (1) and slowly dropwise adding sodium bicarbonate solution, regulating the pH value of the solution to 8, continuing to react for 180min, and adding 5g of L-ascorbic acid;
(3) Cooling the solution in the step (2) to room temperature, taking out and filtering out water to obtain a precipitate;
(4) And (3) placing the precipitate in the step (3) in a drying oven to be dried at 100 ℃ for 1000min, so as to obtain the multifunctional zinc oxide-based nano composite antibacterial powder.
Comparative example 1
The difference from example 1 is that copper sulfate is not added in step (1).
The method comprises the following steps:
(1) 80g of zinc acetate, 1.3g of cerium nitrate, 0.8g of lanthanum chloride and 0.08g of silver nitrate are dissolved in 1.6L of deionized water, and then subjected to hydrothermal reaction at 70 ℃ for 150min;
(2) Adding 0.8g PVP to the solution in the step (1), slowly dropwise adding ammonia water, regulating the pH value of the solution to 9, continuing to react for 120min, and adding 1.5g L-ascorbic acid;
(3) Cooling the solution in the step (2) to room temperature, taking out and filtering out water to obtain a precipitate;
(4) And (3) placing the precipitate in the step (3) in a drying oven for drying at 120 ℃ for 900min to obtain the multifunctional zinc oxide-based nano composite antibacterial powder.
Comparative example 2
The difference from example 1 is that cerium nitrate was not added in step (1).
The method comprises the following steps:
(1) 80g of zinc acetate, 3g of copper sulfate, 0.8g of lanthanum chloride and 0.08g of silver nitrate are dissolved in 1.6L of deionized water, and then are subjected to hydrothermal reaction at 70 ℃ for 150min;
(2) Adding 0.8g PVP to the solution in the step (1), slowly dropwise adding ammonia water, regulating the pH value of the solution to 9, continuing to react for 120min, and adding 1.5g L-ascorbic acid;
(3) Cooling the solution in the step (2) to room temperature, taking out and filtering out water to obtain a precipitate;
(4) And (3) placing the precipitate in the step (3) in a drying oven for drying at 120 ℃ for 900min to obtain the multifunctional zinc oxide-based nano composite antibacterial powder.
Comparative example 3
In comparison with example 1, the difference is that lanthanum chloride is not added in step (1).
The method comprises the following steps:
(1) 80g of zinc acetate, 3g of copper sulfate, 1.3g of cerium nitrate and 0.08g of silver nitrate are dissolved in 1.6L of deionized water, and then subjected to hydrothermal reaction at 70 ℃ for 150min;
(2) Adding 0.8g PVP to the solution in the step (1), slowly dropwise adding ammonia water, regulating the pH value of the solution to 9, continuing to react for 120min, and adding 1.5g L-ascorbic acid;
(3) Cooling the solution in the step (2) to room temperature, taking out and filtering out water to obtain a precipitate;
(4) And (3) placing the precipitate in the step (3) in a drying oven for drying at 120 ℃ for 900min to obtain the multifunctional zinc oxide-based nano composite antibacterial powder.
Comparative example 4
The difference from example 1 is that silver nitrate is not added in step (1).
The method comprises the following steps:
(1) 80g of zinc acetate, 3g of copper sulfate, 1.3g of cerium nitrate and 0.8g of lanthanum chloride are dissolved in 1.6L of deionized water, and then subjected to hydrothermal reaction at 70 ℃ for 150min;
(2) Adding 0.8g PVP to the solution in the step (1), slowly dropwise adding ammonia water, regulating the pH value of the solution to 9, continuing to react for 120min, and adding 1.5g L-ascorbic acid;
(3) Cooling the solution in the step (2) to room temperature, taking out and filtering out water to obtain a precipitate;
(4) And (3) placing the precipitate in the step (3) in a drying oven for drying at 120 ℃ for 900min to obtain the multifunctional zinc oxide-based nano composite antibacterial powder.
Comparative example 5
The difference from example 1 is that PVP is not added in step (2).
The method comprises the following steps:
(1) 80g of zinc acetate, 3g of copper sulfate, 1.3g of cerium nitrate, 0.8g of lanthanum chloride and 0.08g of silver nitrate are dissolved in 1.6L of deionized water, and then are subjected to hydrothermal reaction at 70 ℃ for 150min;
(2) Slowly dropwise adding ammonia water into the solution obtained in the step (1), regulating the pH value of the solution to 9, continuing to react for 120min, and adding 1.5g L-ascorbic acid;
(3) Cooling the solution in the step (2) to room temperature, taking out and filtering out water to obtain a precipitate;
(4) And (3) placing the precipitate in the step (3) in a drying oven for drying at 120 ℃ for 900min to obtain the multifunctional zinc oxide-based nano composite antibacterial powder.
Comparative example 6
In comparison with example 1, the difference is that L-ascorbic acid was not added in step (2).
The method comprises the following steps:
(1) 80g of zinc acetate, 3g of copper sulfate, 1.3g of cerium nitrate, 0.8g of lanthanum chloride and 0.08g of silver nitrate are dissolved in 1.6L of deionized water, and then are subjected to hydrothermal reaction at 70 ℃ for 150min;
(2) Adding 0.8g PVP into the solution in the step (1), slowly dropwise adding ammonia water, adjusting the pH value of the solution to 9, and continuing to react for 120min;
(3) Cooling the solution in the step (2) to room temperature, taking out and filtering out water to obtain a precipitate;
(4) And (3) placing the precipitate in the step (3) in a drying oven for drying at 120 ℃ for 900min to obtain the multifunctional zinc oxide-based nano composite antibacterial powder.
Test example 1
An antibacterial experiment of multifunctional zinc oxide-based nano composite antibacterial powder comprises the following steps:
10mg of the multifunctional zinc oxide-based nano composite antibacterial powder prepared in examples 1-3 and comparative examples 1-6 and the like products sold on the market are weighed, and sterilized by an ultraviolet sterilizing lamp in an ultra-clean workbench for 40min. Diluting the bacterial liquid cultured for 8 hours by 3 orders of magnitude, adding the sterilized multifunctional zinc oxide-based nano composite antibacterial powder, and placing the powder in a shaking table at the temperature of 37 ℃ and the rotating speed of 100rpm for shaking for 4 hours. And sucking 50 mu L of the oscillated bacterial liquid, inoculating the bacterial liquid on a culture dish, and culturing the bacterial liquid in a constant temperature and humidity incubator with the temperature of 37 ℃ and the relative humidity of 90% for 24 hours, and counting viable bacteria. The results are shown in Table 1.
TABLE 1
| Group of | Coli antibacterial efficiency (%) | Staphylococcus aureus antibacterial rate (%) |
| Example 1 | 100.00 | 100.00 |
| Example 2 | 100.00 | 100.00 |
| Example 3 | 100.00 | 100.00 |
| Comparative example 1 | 100.00 | 100.00 |
| Comparative example 2 | 100.00 | 100.00 |
| Comparative example 3 | 100.00 | 100.00 |
| Comparative example 4 | 94.58 | 96.19 |
| Comparative example 5 | 100.00 | 100.00 |
| Comparative example 6 | 100.00 | 100.00 |
| Commercial like products | 92.15 | 95.21 |
As can be seen from Table 1, the multifunctional zinc oxide-based nano composite antibacterial powder has excellent antibacterial performance, and the sterilization rate of the multifunctional zinc oxide-based nano composite antibacterial powder disclosed by the invention to escherichia coli and staphylococcus aureus can reach 100% as can be seen by combining an instruction figure 3 with an instruction figure 4.
Test example 2
The mildew-proof experiment of the multifunctional zinc oxide-based nano composite antibacterial powder comprises the following steps:
10g of the multifunctional zinc oxide-based nanocomposite antibacterial powder prepared in examples 1 to 3 and comparative examples 1 to 6 and 990g of white paint were weighed and sterilized with an ultraviolet sterilizing lamp in an ultra clean bench for 40 minutes. Respectively mixing and fully stirring the multifunctional zinc oxide-based nano composite antibacterial powder and 990g of white paint to obtain paint with the content of the multifunctional zinc oxide-based nano composite antibacterial powder of 1%, and uniformly brushing the paint on a 10 x 10cm PVC sheet. Placing the PVC sheet in a cool and ventilated place for standing for 48 hours, placing the PVC sheet in an environment with the temperature of 37 ℃ and the relative humidity of 90% for culturing for 60 days after the paint on the surface of the PC sheet is completely solidified, and observing the growth condition of surface mould. The results are shown in Table 2.
TABLE 2
| Group of | Mildew resistant grade |
| Example 1 | Level 0 |
| Example 2 | Level 0 |
| Example 3 | Level 0 |
| Comparative example 1 | Level 1 |
| Comparative example 2 | Level 1 |
| Comparative example 3 | Level 1 |
| Comparative example 4 | Level 2 |
| Comparative example 5 | Level 1 |
| Comparative example 6 | Level 1 |
As can be seen from Table 2, the multifunctional zinc oxide-based nano composite antibacterial powder has excellent mildew resistance, and the mildew resistance grade can reach 0 level.
Test example 3
The formaldehyde degradation experiment of the multifunctional zinc oxide-based nano composite antibacterial powder comprises the following steps:
10mg of the multifunctional zinc oxide-based nano composite antibacterial powder prepared in examples 1-3 and comparative examples 1-6 was added into a photocatalytic device (volume is 1L, light source is 40W fluorescent lamp) to degrade formaldehyde to evaluate the photocatalytic activity of the sample, formaldehyde gas (initial mass concentration is controlled at 0.1 mg/L) was used as a simulated pollutant, after 100min of reaction, the concentration of formaldehyde after the reaction was detected at a wavelength of 450nm to evaluate the photocatalytic activity of the sample under irradiation of visible light. The results are shown in Table 3.
Formaldehyde degradation rate (%) = (formaldehyde initial mass concentration-mass concentration of formaldehyde after 100 min)/formaldehyde initial mass concentration x 100%.
TABLE 3 Table 3
| Group of | Formaldehyde degradation Rate (%) |
| Example 1 | 99.71 |
| Example 2 | 99.52 |
| Example 3 | 99.46 |
| Comparative example 1 | 92.77 |
| Comparative example 2 | 93.46 |
| Comparative example 3 | 95.72 |
| Comparative example 4 | 93.29 |
| Comparative example 5 | 94.78 |
| Comparative example 6 | 93.01 |
As can be seen from Table 3, the multifunctional zinc oxide-based nano composite antibacterial powder prepared in examples 1-3 of the invention has a good formaldehyde degradation effect.
Test example 4
Test reference according to the "disinfection technical Specification" (2002 edition), the multifunctional zinc oxide-based nanocomposite antibacterial powders prepared in examples 1 to 3 and comparative examples 1 to 6 were subjected to a test at the time of 24 hours, and the test results are shown in Table 4.
TABLE 4 Table 4
As can be seen from Table 4, the multifunctional zinc oxide-based nano composite antibacterial powder prepared in examples 1 to 3 of the present invention has a destruction rate of up to 99.99% for common infectious viruses.
Test example 5
An antibacterial, mildew-proof and formaldehyde degradation experiment after ultraviolet irradiation of the multifunctional zinc oxide-based nano composite antibacterial powder for 1200 hours comprises the following steps:
The multifunctional zinc oxide-based nanocomposite antibacterial powder prepared in examples 1 to 3 and comparative examples 1 to 6 was irradiated under an ultraviolet lamp for 1200 hours to simulate the use of the multifunctional zinc oxide-based nanocomposite antibacterial powder under daily conditions for one year. Test examples 1-4 were then repeated. The results are shown in Table 5.
TABLE 5
As shown in Table 5, the multifunctional zinc oxide-based nano composite antibacterial powder prepared in examples 1 to 3 of the present invention has excellent antibacterial, mildew-proof, formaldehyde degradation and antiviral capabilities after ultraviolet irradiation for 1200 hours (simulating daily use for one year).
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (6)
1. The preparation method of the multifunctional zinc oxide-based nano composite antibacterial powder is characterized by comprising the following steps of:
(1) Adding zinc salt, copper salt, cerium salt, lanthanum salt, silver salt and deionized water into a reaction kettle, and performing hydrothermal reaction to obtain a solution A;
(2) Adding a surfactant and a pH regulator into the solution A, regulating the pH value of the solution to 8-9, continuously reacting, and adding L-ascorbic acid to obtain a solution B;
(3) Cooling the solution B to room temperature, taking out and filtering out water to obtain a precipitate C;
(4) Drying the precipitate C in a drying oven to obtain multifunctional zinc oxide-based nano composite antibacterial powder;
in the step (1), the ratio of the zinc salt, the copper salt, the cerium salt, the lanthanum salt, the silver salt and the deionized water is 80-88g:3-5g:1.3-2.6g:0.8-1.6g:0.06-0.12g:1600mL;
the hydrothermal reaction temperature in the step (1) is 70-90 ℃;
the surfactant in the step (2) is one or more of PVP, SDS, PEG;
The addition amount of the surfactant in the step (2) is related to the content of zinc salt in the solution A, and the ratio of the surfactant to the zinc salt is 1-2g:100g, wherein the addition amount of the L-ascorbic acid is related to the content of copper salt in the solution A, and the ratio of the L-ascorbic acid to the copper salt is 0.5-1g:1g.
2. The preparation method of the multifunctional zinc oxide-based nano composite antibacterial powder according to claim 1, wherein in the step (1), the zinc salt is any one or a combination of several of zinc acetate, zinc chloride and zinc sulfate, the copper salt is any one or a combination of several of copper sulfate and copper chloride, the cerium salt is any one or a combination of several of cerium nitrate and cerium chloride, the lanthanum salt is any one or a combination of several of lanthanum chloride and lanthanum sulfate, and the silver salt is one or a plurality of silver nitrate and silver acetate.
3. The method for preparing the multifunctional zinc oxide-based nano composite antibacterial powder according to claim 1, wherein the hydrothermal reaction time in the step (1) is 100-150min.
4. The method for preparing the multifunctional zinc oxide-based nano composite antibacterial powder according to claim 1, wherein the pH regulator is one or more of ammonia water, sodium hydroxide, sodium bicarbonate, potassium hydroxide, amine hydroxide and calcium hydroxide.
5. The method for preparing multifunctional zinc oxide-based nano composite antibacterial powder according to claim 1, wherein the continuous reaction time in the step (2) is 120-180min.
6. The method for preparing the multifunctional zinc oxide-based nano composite antibacterial powder according to claim 1, wherein the drying temperature of the drying oven in the step (4) is 100-120 ℃ and the drying time is 900-1000min.
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