CN111514749A - Dual-functional air purification slurry and preparation method and application thereof - Google Patents
Dual-functional air purification slurry and preparation method and application thereof Download PDFInfo
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- CN111514749A CN111514749A CN202010410488.0A CN202010410488A CN111514749A CN 111514749 A CN111514749 A CN 111514749A CN 202010410488 A CN202010410488 A CN 202010410488A CN 111514749 A CN111514749 A CN 111514749A
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- 239000002002 slurry Substances 0.000 title claims abstract description 71
- 238000004887 air purification Methods 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 238000007613 slurry method Methods 0.000 title description 2
- 239000011032 tourmaline Substances 0.000 claims abstract description 160
- 229940070527 tourmaline Drugs 0.000 claims abstract description 160
- 229910052613 tourmaline Inorganic materials 0.000 claims abstract description 160
- 239000000843 powder Substances 0.000 claims abstract description 132
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 229910001868 water Inorganic materials 0.000 claims abstract description 62
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 56
- 230000001588 bifunctional effect Effects 0.000 claims abstract description 53
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000011248 coating agent Substances 0.000 claims abstract description 40
- 238000000576 coating method Methods 0.000 claims abstract description 40
- 239000006185 dispersion Substances 0.000 claims description 53
- 239000007788 liquid Substances 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 230000032683 aging Effects 0.000 claims description 16
- 239000002270 dispersing agent Substances 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 14
- 229910003074 TiCl4 Inorganic materials 0.000 claims description 13
- 238000006460 hydrolysis reaction Methods 0.000 claims description 13
- 238000000498 ball milling Methods 0.000 claims description 11
- 239000004584 polyacrylic acid Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 229920002125 Sokalan® Polymers 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000002431 foraging effect Effects 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 abstract description 16
- -1 oxygen ion Chemical class 0.000 abstract description 16
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract description 7
- 239000004480 active ingredient Substances 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 15
- 238000011065 in-situ storage Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 7
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011941 photocatalyst Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
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- 230000001699 photocatalysis Effects 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical group [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000012629 purifying agent Substances 0.000 description 1
- 230000005616 pyroelectricity Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
Classifications
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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
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- 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
- B01D53/007—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 by irradiation
-
- 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
- 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
-
- 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
- B01J21/16—Clays or other mineral silicates
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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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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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
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/78—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with alkali- or alkaline earth metals
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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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- 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
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
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Abstract
The invention provides a bifunctional air purification slurry and a preparation method and application thereof. The invention provides bifunctional air purification slurry which comprises the following components in parts by mass: TiO 22Coating 0.5-5 parts of tourmaline powder; 0.5-5% of film forming agentPreparing; 99-90 parts of water. The slurry of the invention is made of TiO2Coating tourmaline powder as active ingredient, wherein TiO2The photocatalytic degradation can be carried out on organic pollutants in the air; the tourmaline powder has strong radiation bandwidth and high negative oxygen ion generation efficiency. The bifunctional air purification slurry provided by the invention has the double effects of photocatalytic degradation and negative oxygen ion generation, and can effectively reduce the content of organic pollutants in the air and increase the content of negative oxygen ions in the air.
Description
Technical Field
The invention relates to the technical field of air treatment materials, in particular to bifunctional air purification slurry and a preparation method and application thereof.
Background
Currently, air pollution is seriously affecting human life and health. Organic pollutants in the air include formaldehyde, Volatile Organic Compounds (VOCs), and the like, and the pollutants can stimulate the respiratory system, cause diseases on the respiratory system and seriously increase the incidence of cancers.
The photocatalysis technology uses a semiconductor material as a catalyst, when the semiconductor material is irradiated by photons with energy larger than the forbidden bandwidth, electrons are transited from a valence band to a conduction band to generate electron-hole pairs with strong activity, and further induce a series of oxidation-reduction reactions to generate free radicals with high reaction activity, thereby achieving the purpose of degrading organic pollutants. At present, among numerous photocatalysts, TiO is used2Has good chemical, biological and light stability, no toxicity, high catalytic activity, no secondary pollution, long service life and the like, and is known as an optimal photocatalyst.
The negative oxygen ion in the air is known as vitamin in the air, and can degrade harmful gas in the air, regulate physiological function of human body and prevent respiratory diseases. If the air purifying agent with both photocatalytic performance and negative oxygen ion generating effect can be provided, great benefits can be brought to human health.
Disclosure of Invention
In view of the above, the present invention aims to provide a bifunctional air purification slurry, a preparation method thereof and an application thereof. The bifunctional air purification slurry provided by the invention has the double effects of photocatalytic degradation and negative oxygen ion generation, and can effectively reduce the content of organic pollutants in the air and increase the content of negative oxygen ions in the air.
In order to achieve the purpose of the invention, the invention provides the following technical scheme:
the invention provides a bifunctional air purification slurry which comprises the following components in parts by mass:
TiO2coating 0.5-5 parts of tourmaline powder;
0.5-5 parts of a film forming agent;
90-99 parts of water.
Preferably, the composition comprises the following components in parts by mass:
TiO2coating 1-3 parts of tourmaline powder;
1-3 parts of a film forming agent;
94-98 parts of water.
Preferably, the TiO is2The particle size of the coated tourmaline powder is 1-20 mu m;
the TiO is2Coating TiO in tourmaline powder2The mass ratio of the tourmaline to the tourmaline is 0.1-1: 1.
preferably, the film former is polyacrylic acid.
The invention provides a preparation method of the bifunctional air purification slurry, which comprises the following steps:
(1) providing a tourmaline powder water dispersion;
(2) adding TiCl into the tourmaline powder water dispersion4Solution, hydrolysis reaction to obtain TiO2Coating tourmaline powder dispersion liquid;
(3) subjecting the TiO to a reaction2Coating tourmaline powder dispersion liquid for aging, and then adding a film-forming agent and water to obtain the bifunctional air purification slurry.
Preferably, the mass concentration of the tourmaline powder in the tourmaline powder water dispersion liquid is 10-50 g/L; the particle size of the tourmaline powder is less than or equal to 20 mu m.
Preferably, the preparation method of the tourmaline powder aqueous dispersion comprises the following steps:
mixing tourmaline, water and a dispersing agent, and then carrying out ball milling to obtain a tourmaline powder water dispersion;
the mass of the dispersing agent is 10-50% of that of the tourmaline.
Preferably, said TiCl4The mass ratio of the tourmaline to the tourmaline is 0.47-16.5: 1;
the TiCl4The molar concentration of the solution is 0.1-1 mol/L, and the TiCl4The adding speed of the solution is 1.5-15 mL/h.
Preferably, the temperature of the hydrolysis reaction is 30-90 ℃, and the time is 1-5 h;
the aging temperature is 30-90 ℃, and the aging time is 2-4 h.
The invention provides an application of the bifunctional air purification slurry in air purification, and the application method comprises the following steps:
spraying the bifunctional air purification slurry on the surface of an air conditioner vent;
the spraying amount of the bifunctional air purification slurry on the surface of each square centimeter of air outlet of the air conditioner is 0.5-2 mg;
the purification space of the bifunctional air purification slurry is 30-60 m per milligram3。
The invention provides a bifunctional air purification slurry which comprises the following components in parts by mass: TiO 22Coating 0.5-5 parts of tourmaline powder; 0.5-5 parts of a film forming agent; 90-99 parts of water. The slurry of the invention is made of TiO2Coating tourmaline powder as active ingredient, wherein TiO2The photocatalytic degradation can be carried out on organic pollutants in the air; the tourmaline powder has strong radiation bandwidth and high negative oxygen ion generation efficiency. The bifunctional air purification slurry provided by the invention has the double effects of photocatalytic degradation and negative oxygen ion generation, and can effectively reduce the content of organic pollutants in the air and increase the content of negative oxygen ions in the air. The results of the examples show that after the bifunctional air purification slurry disclosed by the invention is sprayed on an air outlet of an air conditioner for 24 hours, the formaldehyde content in the air can be reduced from 1000ppm to 30ppm, and the negative oxygen ion content in the air can be reduced from 200/cm3Lifting to 3400/cm3。
The invention provides a preparation method of bifunctional air purification slurry, which is prepared by adding TiCl into tourmaline powder aqueous dispersion4Solution, hydrolysis reaction, can make TiO2The nano-crystal grows on the surface of the tourmaline powder in situ and wraps the tourmaline powder. Meanwhile, the preparation method provided by the invention has low energy consumption, does not produce pollution and is easy to realize industrial mass production.
Detailed Description
The invention provides a bifunctional air purification slurry which comprises the following components in parts by mass:
TiO2coating 0.5-5 parts of tourmaline powder;
0.5-5 parts of a film forming agent;
90-99 parts of water.
The difunctional air purification slurry provided by the invention comprises 0.5-5 parts of TiO2The coating tourmaline powder is preferably 1 to 3 parts. In the present invention, the TiO is2The particle size of the coated tourmaline powder is preferably 1-20 μm, and preferably 5-15 μm; the TiO is2Coating TiO in tourmaline powder2The mass ratio of the tourmaline to the tourmaline is preferably 0.1-1: 1, more preferably 0.4 to 0.8: 1.
In the present invention, the TiO is2The tourmaline-coated powder comprises tourmaline core and TiO coated on the surface of the tourmaline core2And (4) coating. In the present invention, the TiO is2Coating TiO in tourmaline powder2Has anatase type and rutile type mixed crystal structure. The slurry of the invention is made of TiO2Coating tourmaline powder as active ingredient, wherein TiO2The photocatalytic degradation can be carried out on organic pollutants in the air; the tourmaline powder is a silicate substance which is characterized by containing boron and has an aluminum, sodium, iron and lithium annular structure, and due to the pyroelectricity and piezoelectricity, polar ions of the tourmaline powder can vibrate at a balance position to cause dipole moment change to generate electromagnetic radiation of a far infrared wave band, so that a stronger radiation broadband is formed, and the tourmaline powder has higher negative oxygen ion generation efficiency.
With said TiO2The mass portion of the coated tourmaline powder is taken as a reference, and the bifunctional air purification slurry provided by the invention comprises 0.5-5 parts of a film forming agent, and preferably 1-3 parts. In the present invention, the film former is preferably polyacrylic acid. In the present invention, the film-forming agent functions to promote film formation of the slurry.
With said TiO2The mass portion of the coated tourmaline powder is taken as a reference, and the bifunctional air purification slurry provided by the invention comprises 90-99 parts of water, preferably 94-98 parts of water. In thatIn the present invention, the water is preferably deionized water.
With said TiO2The mass parts of the coated tourmaline powder are taken as a reference, and the bifunctional air purification slurry provided by the invention preferably further comprises 1-3 parts of a dispersing agent. In the present invention, the kind of the dispersant is preferably sodium hexametaphosphate.
The invention provides a preparation method of the bifunctional air purification slurry, which comprises the following steps:
(1) providing a tourmaline powder water dispersion;
(2) adding TiCl into the tourmaline powder water dispersion4Solution, hydrolysis reaction to obtain TiO2Coating tourmaline powder dispersion liquid;
(3) subjecting the TiO to a reaction2Coating tourmaline powder dispersion liquid for aging, and then adding a film-forming agent and water to obtain the bifunctional air purification slurry.
The invention firstly provides a tourmaline powder water dispersion. In the invention, the mass concentration of tourmaline powder in the tourmaline powder water dispersion liquid is preferably 10-50 g/L, and more preferably 20-40 g/L; the particle size of the tourmaline powder is preferably 20 μm or less, more preferably 10 μm or less.
In the present invention, the method for preparing the aqueous dispersion of tourmaline powder preferably comprises the steps of:
mixing tourmaline, water and a dispersing agent, and then carrying out ball milling to obtain the tourmaline powder water dispersion.
In the present invention, the dispersant is preferably polyacrylic acid; the mass of the dispersing agent is preferably 10-50% of that of tourmaline, and more preferably 20-40%. The present invention does not require any particular mixing means, and mixing means known to those skilled in the art may be used. In the invention, the rotation speed of the ball milling is preferably 200-300 r/min, and the time of the ball milling is preferably 1-8 h, and more preferably 2-6 h.
After tourmaline powder water dispersion is obtained, TiCl is added into the tourmaline powder water dispersion4Solution, hydrolysis reaction to obtain TiO2Coated tourmaline powder componentAnd (4) dispersing. In the present invention, the TiCl4The mass ratio of the tourmaline to the tourmaline is preferably 0.47-16.5: 1; the TiCl4The molar concentration of the solution is preferably 0.1-1 mol/L, and more preferably 0.4-0.8 mol/L; in the present invention, TiCl is used4The solution is preferably added dropwise, the TiCl4The adding speed of the solution is preferably 1.5-15 mL/h, and more preferably 5-10 mL/h.
In the present invention, the TiO is2The coated tourmaline powder solution contains TiO2Coating tourmaline powder, water and a dispersant. On TiCl4During the dropwise addition of the solution, TiCl4The tourmaline and water generate hydrolysis reaction to generate photocatalyst TiO on the surface of the tourmaline in situ2The reaction formula is TiCl4+H2O＝TiO2+ HCl. In the invention, the temperature of the hydrolysis reaction is preferably 30-90 ℃, and more preferably 50-70 ℃; the temperature of the tourmaline powder water dispersion liquid is the hydrolysis temperature. In the invention, the time of the hydrolysis reaction is preferably 1-5 h, and more preferably 2-3 h; the TiCl4The total time of the solution dropping is the hydrolysis time. Further, the invention controls TiCl4The concentration, the dropping speed and the hydrolysis reaction temperature of the TiO compound can be controlled2The crystal form of (2) avoids agglomeration.
To obtain TiO2After coating tourmaline powder dispersion liquid, the invention ensures that the TiO is coated with the tourmaline powder dispersion liquid2Coating tourmaline powder dispersion liquid for aging. In the invention, the aging mode is preferably standing aging, the aging temperature is preferably 30-90 ℃, more preferably 50-70 ℃, and the aging time is preferably 2-4 h, more preferably 3 h. In the present invention, the aging is effected to make TiO2Slow crystallization to obtain TiO2Has anatase type and rutile type mixed crystal structure.
After aging, the invention adds film-forming agent and water into the aging liquid to obtain the bifunctional air purification slurry. Due to the TiO2The coated tourmaline powder solution already contains water, and the residual water is complemented according to the mass part content of the water in the bifunctional air purification slurry.
The invention adopts in-situ growth of TiO2On one hand, the method avoids the traditional high-temperature high-pressure hydrothermal reaction and high-temperature calcination method for synthesizing TiO2The agglomeration and sintering of the particles are avoided, and the phenomena of high energy consumption and serious pollution in the preparation process are avoided.
The invention provides application of the bifunctional air purification slurry in air purification. In the present invention, the method of application preferably comprises the steps of:
and spraying the bifunctional air purification slurry on the surface of an air conditioner vent.
In the invention, the spraying mode is preferably atomized spraying; after spraying, the bifunctional air purification slurry is sprayed on the surface of the air conditioner vent to form a layer of bifunctional air purification membrane. In the invention, the spraying amount of the bifunctional air purification slurry on the surface of the air outlet of the air conditioner per square centimeter is preferably 0.5-2 mg, and more preferably 1-1.5 mg; the purification space of the bifunctional air purification slurry is preferably 30-60 m per milligram3More preferably 40 to 50m3。
The dual-function air purification slurry provided by the present invention, the preparation method and the application thereof are described in detail with reference to the following examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The difunctional air purification slurry comprises the following components in parts by mass:
TiO2coating tourmaline powder 0.5 part; wherein the TiO is2The mass ratio of tourmaline powder to tourmaline powder is 0.2: 1;
1 part of film forming agent;
and 98.5 parts of water.
The preparation method of the bifunctional air purification slurry comprises the following steps:
(1) tourmaline with the grain diameter of 2 mu m is dispersed in deionized water to prepare a solution with the concentration of 10g/L, and a dispersing agent (sodium hexametaphosphate, 1 part) is added for ball milling for 8 hours to obtain tourmaline powder water dispersion;
(2) dispersing tourmaline powder in waterThe temperature is raised to 30 ℃, 1.5mL/h of TiCl with the concentration of 1.0mol/L is dripped into the mixture4Solution (TiCl)4The mass ratio of the powder to the tourmaline is 0.47), and TiO is synthesized in situ on the surface of the tourmaline powder2To obtain TiO2Coating tourmaline powder dispersion liquid;
(3) adding TiO into the mixture2And coating the tourmaline powder dispersion liquid, aging for 2h, and adding a polyacrylic acid film-forming agent and water to obtain the bifunctional air purification slurry.
Example 2
The difunctional air purification slurry comprises the following components in parts by mass:
TiO2coating 2 parts of tourmaline powder; wherein the TiO is2The mass ratio of tourmaline powder to tourmaline powder is 0.3: 1;
4 parts of a film forming agent;
94 parts of water.
The preparation method of the bifunctional air purification slurry comprises the following steps:
(1) tourmaline with the grain diameter of 15 mu m is dispersed in deionized water to prepare a solution with the concentration of 20g/L, and a dispersant is added for ball milling for 2 hours to obtain a tourmaline powder water dispersion;
(2) heating the tourmaline powder water dispersion to 60 deg.C, and dripping TiCl with concentration of 0.3mol/L into the water dispersion at a speed of 5mL/h4Solution (TiCl)4The mass ratio of the powder to the tourmaline is 0.7), and TiO is synthesized in situ on the surface of the tourmaline powder2To obtain TiO2Coating tourmaline powder dispersion liquid;
(3) adding TiO into the mixture2Aging the tourmaline-coated powder dispersion liquid for 3h to obtain TiO2Coating the slurry of tourmaline powder;
(4) to the TiO2Adding polyacrylic acid film-forming agent with the mass of 15% into the coated tourmaline powder, and adding water to prepare TiO2The double-function air purification slurry with the mass content of the coated tourmaline powder being 2 percent.
Example 3
The difunctional air purification slurry comprises the following components in parts by mass:
TiO2coated tourmaline powder 4Preparing; wherein the TiO is2The mass ratio of tourmaline powder to tourmaline powder is 0.4: 1;
1 part of film forming agent;
and 95 parts of water.
The preparation method of the bifunctional air purification slurry comprises the following steps:
(1) tourmaline with the grain diameter of 10 mu m is dispersed in deionized water to prepare a solution with the concentration of 50g/L, and a dispersant is added for ball milling for 4 hours to obtain a tourmaline powder water dispersion;
(2) heating the tourmaline powder water dispersion to 80 deg.C, and adding TiCl 0.15mol/L dropwise at a speed of 10mL/h4Solution (TiCl)4The mass ratio of the powder to the tourmaline is 0.94), and TiO is synthesized in situ on the surface of the tourmaline powder2To obtain TiO2Coating tourmaline powder dispersion liquid;
(3) adding TiO into the mixture2Aging the coated tourmaline powder dispersion liquid for 2h, filtering and washing the product after aging, and drying in a 105 ℃ oven for 24h to obtain TiO2Coating tourmaline powder;
(4) to the TiO2Polyacrylic acid film forming agent and water are added into the coated tourmaline powder to obtain the bifunctional air purification slurry.
Example 4
The difunctional air purification slurry comprises the following components in parts by mass:
TiO21 part of coated tourmaline powder; wherein the TiO is2The mass ratio of tourmaline powder to tourmaline powder is 0.5: 1;
1 part of film forming agent;
and 98 parts of water.
The preparation method of the bifunctional air purification slurry comprises the following steps:
(1) tourmaline with the grain diameter of 8 mu m is dispersed in deionized water to prepare a solution with the concentration of 40g/L, and a dispersant is added for ball milling for 6 hours to obtain a tourmaline powder water dispersion;
(2) heating the tourmaline powder water dispersion to 90 ℃, and dripping TiCl with the concentration of 0.1mol/L at the speed of 15mL/h4Solution (TiCl)4Mass ratio to tourmaline of 1.18) in the electric fieldIn-situ synthesis of TiO on stone powder surface2To obtain TiO2Coating tourmaline powder dispersion liquid;
(3) adding TiO into the mixture2Aging the tourmaline powder-coated dispersion liquid for 1h, filtering and washing the product after aging, and drying in a 105 ℃ oven for 24h to obtain TiO2Coating tourmaline powder;
(4) to the TiO2Polyacrylic acid film forming agent and water are added into the coated tourmaline powder to obtain the bifunctional air purification slurry.
Example 5
The difunctional air purification slurry comprises the following components in parts by mass:
TiO2coating 2 parts of tourmaline powder; wherein the TiO is2The mass ratio of tourmaline powder to tourmaline powder is 0.6: 1;
4 parts of a film forming agent;
and 93 parts of water.
The preparation method of the bifunctional air purification slurry comprises the following steps:
(1) tourmaline with the grain diameter of 15 mu m is dispersed in deionized water to prepare a solution with the concentration of 20g/L, and a dispersant is added for ball milling for 5 hours to obtain a tourmaline powder water dispersion;
(2) heating the tourmaline powder water dispersion to 60 deg.C, and adding TiCl with concentration of 0.5mol/L dropwise at a speed of 3mL/h4Solution (TiCl)4The mass ratio of the powder to the tourmaline is 1.42), and TiO is synthesized in situ on the surface of the tourmaline powder2To obtain TiO2Coating tourmaline powder dispersion liquid;
(3) adding TiO into the mixture2Aging the coated tourmaline powder dispersion liquid for 3h, filtering and washing the product after aging, and drying in a 105 ℃ oven for 24h to obtain TiO2Coating tourmaline powder;
(4) to the TiO2Polyacrylic acid film forming agent and water are added into the coated tourmaline powder to obtain the bifunctional air purification slurry.
Example 6
The difunctional air purification slurry comprises the following components in parts by mass:
TiO23 parts of coated tourmaline powder; wherein the TiO is2The mass ratio of tourmaline powder to tourmaline powder is 0.7: 1;
4 parts of a film forming agent;
and 93 parts of water.
The preparation method of the bifunctional air purification slurry comprises the following steps:
(1) tourmaline with the grain diameter of 10 mu m is dispersed in deionized water to prepare a solution with the concentration of 30g/L, and a dispersant is added for ball milling for 3 hours to obtain a tourmaline powder water dispersion;
(2) heating the tourmaline powder water dispersion to 50 deg.C, and adding TiCl 0.75mol/L dropwise at a speed of 2mL/h4Solution (TiCl)4Mass ratio of the powder to tourmaline is 16.5), and TiO is synthesized in situ on the surface of tourmaline powder2To obtain TiO2Coating tourmaline powder dispersion liquid;
(3) adding TiO into the mixture2Aging the tourmaline powder-coated dispersion liquid for 1h, filtering and washing the product after aging, and drying in a 105 ℃ oven for 24h to obtain TiO2Coating tourmaline powder;
(4) to the TiO2Polyacrylic acid film forming agent and water are added into the coated tourmaline powder to obtain the bifunctional air purification slurry.
Test example
The bifunctional air purification slurry obtained in the embodiment 1-6 is sprayed at the air outlet of an air conditioner in an atomized manner, wherein the spraying amount is 1mg/cm2The clean space is 50m3. The formaldehyde content in the air immediately after spraying and 24h after spraying was measured using a formaldehyde detector, and the negative oxygen ion content in the air immediately after spraying and 24h after spraying was measured using a formaldehyde tester and a negative oxygen ion tester, respectively, and the results obtained are listed in table 1.
TABLE 1 air cleaning Effect of the bifunctional air cleaning slurries obtained in examples 1-6
As can be seen from Table 1, the bifunctional air purification slurry provided by the invention has the dual effects of photocatalytic degradation and negative oxygen ion generation, and can effectively reduce the content of formaldehyde in air and increase the content of negative oxygen ions in air.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The difunctional air purification slurry comprises the following components in parts by mass:
TiO2coating 0.5-5 parts of tourmaline powder;
0.5-5 parts of a film forming agent;
90-99 parts of water.
2. The bifunctional air purification slurry according to claim 1, comprising the following components in parts by mass:
TiO2coating 1-3 parts of tourmaline powder;
1-3 parts of a film forming agent;
94-98 parts of water.
3. The dual function air purification slurry of claim 1, wherein the TiO is selected from the group consisting of2The particle size of the coated tourmaline powder is 1-20 mu m;
the TiO is2Coating TiO in tourmaline powder2The mass ratio of the tourmaline to the tourmaline is 0.1-1: 1.
4. the dual function air purification slurry of claim 1, wherein the film former is polyacrylic acid.
5. A preparation method of the bifunctional air purifying slurry as claimed in any one of claims 1 to 4, characterized by comprising the following steps:
(1) providing a tourmaline powder water dispersion;
(2) adding TiCl into the tourmaline powder water dispersion4Solution, hydrolysis reaction to obtain TiO2Coating tourmaline powder dispersion liquid;
(3) subjecting the TiO to a reaction2Coating tourmaline powder dispersion liquid for aging, and then adding a film-forming agent and water to obtain the bifunctional air purification slurry.
6. The method according to claim 5, wherein the mass concentration of the tourmaline powder in the tourmaline powder aqueous dispersion is 10 to 50 g/L; the particle size of the tourmaline powder is less than or equal to 20 mu m.
7. The method according to claim 5 or 6, wherein the method for preparing the aqueous dispersion of tourmaline powder comprises the steps of:
mixing tourmaline, water and a dispersing agent, and then carrying out ball milling to obtain a tourmaline powder water dispersion;
the mass of the dispersing agent is 10-50% of that of the tourmaline.
8. The preparation process according to claim 5, characterized in that said TiCl is introduced4The mass ratio of the tourmaline to the tourmaline is 0.47-16.5: 1;
the TiCl4The molar concentration of the solution is 0.1-1 mol/L, and the TiCl4The adding speed of the solution is 1.5-15 mL/h.
9. The preparation method according to claim 5, wherein the temperature of the hydrolysis reaction is 30-90 ℃ and the time is 1-5 h;
the aging temperature is 30-90 ℃, and the aging time is 2-4 h.
10. The application of the bifunctional air purification slurry of any one of claims 1 to 4 or the bifunctional air purification slurry prepared by the preparation method of any one of claims 5 to 9 in air purification, is characterized by comprising the following steps:
spraying the bifunctional air purification slurry on the surface of an air conditioner vent;
the spraying amount of the bifunctional air purification slurry on the surface of each square centimeter of air outlet of the air conditioner is 0.5-2 mg;
the purification space of the bifunctional air purification slurry is 30-60 m per milligram3。
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199369A (en) * | 2010-03-26 | 2011-09-28 | 中国矿业大学(北京) | Preparation method of tourmaline/nano TiO2 composite functional material |
| CN102391690A (en) * | 2011-08-05 | 2012-03-28 | 江西理工大学 | High whiteness tourmaline negative ion powder and coating process |
| CN107353679A (en) * | 2017-08-18 | 2017-11-17 | 天津市职业大学 | A kind of high-efficient cleaning is except gray haze coating and preparation method thereof |
| CN109370344A (en) * | 2018-09-25 | 2019-02-22 | 张�林 | Zeolite negative ion paint |
-
2020
- 2020-05-15 CN CN202010410488.0A patent/CN111514749A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199369A (en) * | 2010-03-26 | 2011-09-28 | 中国矿业大学(北京) | Preparation method of tourmaline/nano TiO2 composite functional material |
| CN102391690A (en) * | 2011-08-05 | 2012-03-28 | 江西理工大学 | High whiteness tourmaline negative ion powder and coating process |
| CN107353679A (en) * | 2017-08-18 | 2017-11-17 | 天津市职业大学 | A kind of high-efficient cleaning is except gray haze coating and preparation method thereof |
| CN109370344A (en) * | 2018-09-25 | 2019-02-22 | 张�林 | Zeolite negative ion paint |
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