CN113813943A - Efficient photocatalytic filter screen for VOC (volatile organic compounds) treatment and preparation method thereof - Google Patents

Efficient photocatalytic filter screen for VOC (volatile organic compounds) treatment and preparation method thereof Download PDF

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CN113813943A
CN113813943A CN202111220090.1A CN202111220090A CN113813943A CN 113813943 A CN113813943 A CN 113813943A CN 202111220090 A CN202111220090 A CN 202111220090A CN 113813943 A CN113813943 A CN 113813943A
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filter screen
parts
water
photocatalytic
photocatalyst
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陈广川
于红光
王先慧
吴新磊
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Tongxi Group Co ltd
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Tongxi Group Co ltd
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    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
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Abstract

The invention belongs to the technical field of photocatalysis, and particularly relates to a high-efficiency photocatalytic filter screen for VOC (volatile organic compounds) treatment and a preparation method thereof, wherein the high-efficiency photocatalytic filter screen is prepared by spraying a photocatalytic suspension on a metal filter screen, and the photocatalytic suspension comprises the following components in parts by mass: 60-75 parts of water, 2-10 parts of photocatalyst, 0.3-1.5 parts of dispersing agent, 0.5-2 parts of wetting agent, 1-3 parts of curing agent and 6-12 parts of aqueous industrial paint. After the filter screen is brushed for 20-50 times, the catalytic degradation efficiency is still higher, and in addition, a catalyst dispersion liquid system sprayed on the filter screen is environment-friendly and has no secondary pollution.

Description

Efficient photocatalytic filter screen for VOC (volatile organic compounds) treatment and preparation method thereof
Technical Field
The invention belongs to the technical field of photocatalysis, and particularly relates to a high-efficiency photocatalytic filter screen for VOC (volatile organic compounds) treatment and a preparation method thereof.
Background
In recent years, with the improvement of living standard, the pursuit of food is gradually improved, more and more catering industries are increasingly rising, and the increase of the number of hotels, restaurants and dining halls leads to the increase of the amount of oil smoke generated by kitchens. The oil smoke has great influence on urban environment and human health, pollutants in the oil smoke are stable and can stably exist in the air, and the main components of the oil smoke comprise alkane, olefin, and organic volatile gases such as ether, aldehyde, ketone compounds, polycyclic aromatic hydrocarbon and the like.
The oil fume treatment and purification can improve the living environment of human beings. The existing oil fume treatment technology comprises a mechanical separation method, a filtration method, an adsorption method, a washing method and an electrostatic method, wherein when the methods are used independently, the treatment efficiency is low, the symptoms are treated, and the root causes are not treated, and the research on the treatment technology of VOC in the oil fume is less at present, so that the research and development of a high-efficiency photocatalytic filter screen for VOC treatment are needed.
Patent CN112007429A discloses a method for manufacturing a photocatalyst filter screen and an air purification device composed of the photocatalyst filter screen, wherein nano-scale titanium dioxide is uniformly distributed and embedded and plated on the filter screen through procedures of degreasing, pre-dipping, activating, electroplating, etc., the filter screen can effectively purify harmful gas, and the catalyst is not easy to fall off, but the filter screen is more complex in manufacturing process, and electroplating is not environment-friendly, and is difficult to be used in production; patent CN105642248A discloses a formaldehyde filter screen composite material for an air purifier and a preparation method thereof, the method mixes a solvent and a cross-linking agent, stirs, adds poly 1, 4-diphenyl butyne and mesoporous Qin dioxide nano particles,and stirring to obtain a first mixed solution, adding activated carbon fibers into the first mixed solution for crosslinking reaction, and drying to obtain the formaldehyde filter screen composite material for the air purifier. The used cross-linking agent is epoxy resin, the solvent is acetone, the environment is not protected, and the epoxy resin is easy to coat titanium dioxide, so that the catalytic efficiency is reduced; patent CN111420465A discloses a photocatalytic filter screen and a preparation method thereof, wherein the method firstly prepares a Cu-containing filter screen2O/TiO2Catalyst gel, putting polyester fiber cotton into the cleaned catalyst gel, and drying to obtain the photocatalytic filter screen composite photocatalytic material, wherein the filter screen prepared by the method has the disadvantages of complicated process and long preparation time; the patent CN109289415B discloses a multifunctional air purification filter screen and a preparation method thereof, the method comprises the steps of respectively preparing spinning solutions from cation exchange resin and anion exchange resin, adding tourmaline and cerium dioxide powder into the spinning solutions for dispersion, then carrying out composite spinning to prepare nanofiber non-woven fabrics, further carrying out in-situ generation of a zinc cadmium sulfide photocatalyst through solvothermal reaction, and loading the zinc cadmium sulfide photocatalyst on the surfaces of the non-woven fabrics to prepare the multifunctional air purification filter screen. The method has complicated manufacturing process, and various organic materials are not environment-friendly.
In the prior art, the catalyst is loaded on the metal filter screen by adopting an electroplating method and a sol-gel method, the process is complex, the time consumption is long, and the waste water generated by electroplating pollutes the environment; nano TiO 22The nano anatase particles are sintered on the surface of the substrate at high temperature, the high-temperature control is difficult, the manufacturing cost is too high, and the nano anatase particles can change the crystal form through high-temperature calcination, so that the catalytic performance is reduced; nano TiO 22The polymer resin is crosslinked on the surface of the matrix, and the multipurpose solvent is an organic solvent, so that the organic material is not environment-friendly, and the catalytic performance is reduced because the resin coats the catalyst.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a photocatalytic filter screen which can be bonded for a long time, is efficient in catalysis, energy-saving and environment-friendly, simple in process and low in cost. The invention is prepared by mixing a photocatalytic material, a dispersing agent, a wetting agent and water-based industrial paint, spraying the mixture on a filter screen and drying the mixture at a low temperature, and after the filter screen is scrubbed for 20 to 50 times, the filter screen still has high catalytic degradation efficiency.
The technical scheme provided by the invention is as follows:
the high-efficiency photocatalytic filter screen for VOC treatment is prepared by spraying a photocatalytic suspension on a metal filter screen, wherein the photocatalytic suspension comprises the following components in parts by mass: 60-75 parts of water, 2-10 parts of photocatalyst, 0.3-1.5 parts of dispersing agent, 0.5-2 parts of wetting agent, 1-3 parts of curing agent and 6-12 parts of aqueous industrial paint.
Further, the photocatalyst is titanium dioxide, graphite-like carbon nitride, cadmium sulfide, GO/TiO2One or more of (a).
Further, the size range of the photocatalyst particle size is 20-100 nm.
Further, the dispersant is one or more of hybrid silicon, sodium hexametaphosphate and sodium tripolyphosphate.
Furthermore, the water-based industrial paint is one or more of water-based alkyd, water-based epoxy, water-based acrylic, water-based fluorocarbon and water-based double-component polyurethane.
Furthermore, the metal filter screen is made of stainless steel or aluminum alloy.
The invention also provides a photocatalytic suspension, which is characterized by comprising the following components in parts by mass: 60-75 parts of water, 2-10 parts of photocatalyst, 0.3-1.5 parts of dispersing agent, 0.5-2 parts of wetting agent, 1-3 parts of curing agent and 6-12 parts of aqueous industrial paint.
The invention also provides application of the photocatalytic suspension in VOC (volatile organic compound) treatment.
The invention also provides a preparation method of the high-efficiency photocatalytic filter screen for VOC treatment, which comprises the following steps:
mixing and stirring the dispersing agent and the distilled water uniformly;
adding a photocatalyst into the mixed solution, and stirring and dispersing uniformly;
adding a wetting agent, a curing agent and the water-based industrial paint into the dispersion liquid, stirring and uniformly dispersing to obtain a photocatalytic suspension;
and (3) spraying the photocatalytic suspension liquid on the metal filter screen by adopting a spraying device, and drying to obtain the high-efficiency photocatalytic filter screen.
Further, the drying step is as follows: oven drying at 40-60 deg.C for 3-5 min. The high-efficiency photocatalytic filter screen for VOC treatment comprises the following steps: mixing water and a dispersing agent, stirring, adding a photocatalyst, stirring, adding a wetting agent, a curing agent and water-based industrial paint, stirring to obtain a suspension, spraying by using a high-pressure spraying device, drying and curing to obtain the high-efficiency photocatalytic filter screen for VOC treatment.
The invention discloses a high-efficiency photocatalytic filter screen for VOC (volatile organic compounds) treatment, which is prepared by spraying a photocatalytic suspension on a metal filter screen, wherein the photocatalytic suspension comprises the following components in parts by weight: 60-75 parts of water, 2-10 parts of photocatalyst, 0.3-1.5 parts of dispersing agent, 0.5-2 parts of wetting agent, 1-3 parts of curing agent and 6-12 parts of aqueous industrial paint. The photocatalyst is titanium dioxide, graphite-like carbon nitride, cadmium sulfide, GO/TiO2One or more of the above. The size range of the particle diameter of the photocatalyst is between 20 and 100 nm; the dispersant is one or a combination of more of hybrid silicon, sodium hexametaphosphate and sodium tripolyphosphate; the water-based industrial paint is one or a combination of more of water-based alkyd, water-based epoxy, water-based acrylic, water-based fluorocarbon and water-based double-component polyurethane; the filter screen carrier comprises but is not limited to a stainless steel filter screen, an aluminum alloy filter screen and the like;
a preparation method of a high-efficiency photocatalytic filter screen for VOC treatment comprises the following specific steps:
1. mixing and stirring the dispersing agent and the distilled water uniformly;
2. adding the photocatalyst into the mixed solution obtained in the step (1), and stirring and dispersing uniformly;
3. adding a wetting agent, a curing agent and the water-based industrial paint into the dispersion liquid obtained in the step (2), stirring and uniformly dispersing to obtain a photocatalytic suspension;
4. and (3) spraying the photocatalytic suspension liquid obtained in the step (3) onto a metal filter screen by using a high-pressure spraying device, and drying for 3-5min at the temperature of 40-60 ℃ to obtain the high-efficiency photocatalytic filter screen.
Advantageous effects
The photocatalytic filter screen for VOC treatment prepared by the invention has the advantages of simple preparation process, short operation time, stable performance, good adhesive force and good application value; in addition, the substrate used by the invention is made of metal material, and can uniformly load the photocatalyst on the metal filter screen without high-temperature sintering and electroplating, the dispersing agent such as silicon is hybridized to uniformly disperse the catalyst such as titanium dioxide, the catalyst suspension can be uniformly sprayed on the filter screen by spraying of a spray gun, the component of the water-based industrial paint is used as a better binder to better bond the catalyst such as titanium dioxide and the like with the metal filter screen, the wetting agent and the curing agent can assist the bonding of the water-based industrial paint, the photocatalytic effect of the filter screen is not obviously reduced after the filter screen is scrubbed for many times, the water-based industrial paint can not only effectively bond the metal filter screen substrate and the photocatalyst, but also can well protect the metal surface, prevent rust and prevent corrosion, and after the water-based industrial paint acts on the wetting agent and the curing agent, the photocatalyst can be firmly loaded on the metal filter screen without being coated with the photocatalyst, the catalytic performance is not affected. The dispersing agent can uniformly disperse the photocatalyst in the system, prevent the photocatalyst from agglomerating to reduce the catalytic effect, and the photocatalytic suspension prepared by the invention is an environment-friendly system and has no secondary pollution.
According to the GB/T23761-2009 photocatalytic air purification material performance test method, formaldehyde, acetaldehyde and benzene are taken as typical VOCs components, the average degradation rate of the three organic matters is up to 95% through analysis and calculation, and the catalyst falling rate is 0.1% after the filter screen is washed for multiple times.
Detailed Description
Example 1
The high-efficiency photocatalytic filter screen for VOC treatment is prepared by spraying a photocatalytic suspension on a metal filter screen, wherein the photocatalytic suspension comprises the following massThe components in parts: 70 parts of water, 6 parts of photocatalyst, 1 part of dispersing agent, 1.2 parts of wetting agent, 2 parts of curing agent and 9 parts of aqueous industrial paint. The photocatalyst is titanium dioxide, graphite-like carbon nitride, cadmium sulfide, GO/TiO2One or more of the above. The size range of the particle diameter of the photocatalyst is between 20 and 100 nm; the dispersant is one or a combination of more of hybrid silicon, sodium hexametaphosphate and sodium tripolyphosphate; the water-based industrial paint is one or a combination of more of water-based alkyd, water-based epoxy, water-based acrylic, water-based fluorocarbon and water-based double-component polyurethane; the filter screen carrier comprises but is not limited to a stainless steel filter screen, an aluminum alloy filter screen and the like;
a preparation method of a high-efficiency photocatalytic filter screen for VOC treatment comprises the following specific steps:
(1) mixing and stirring the dispersing agent and the distilled water uniformly;
(2) adding the photocatalyst into the mixed solution obtained in the step (1), and stirring and dispersing uniformly;
(3) adding a wetting agent, a curing agent and the water-based industrial paint into the dispersion liquid obtained in the step (2), stirring and uniformly dispersing to obtain a photocatalytic suspension;
(4) and (4) spraying the photocatalytic suspension liquid obtained in the step (3) onto a metal filter screen by using a high-pressure spraying device, and drying for 4min at 50 ℃ to obtain the high-efficiency photocatalytic filter screen.
Example 2
The high-efficiency photocatalytic filter screen for VOC treatment is prepared by spraying a photocatalytic suspension on a metal filter screen, wherein the photocatalytic suspension comprises the following components in parts by mass: 60 parts of water, 3 parts of photocatalyst, 1.2 parts of dispersing agent, 0.5 part of wetting agent, 1 part of curing agent and 10 parts of aqueous industrial paint. The photocatalyst is titanium dioxide, graphite-like carbon nitride, cadmium sulfide, GO/TiO2One or more of the above. The size range of the particle diameter of the photocatalyst is between 20 and 100 nm; the dispersant is one or a combination of more of hybrid silicon, sodium hexametaphosphate and sodium tripolyphosphate; the water-based industrial paint is water-based alkyd, water-based epoxy, water-based acrylic and waterOne or more of fluorocarbon and aqueous two-component polyurethane; the filter screen carrier comprises but is not limited to a stainless steel filter screen, an aluminum alloy filter screen and the like;
a preparation method of a high-efficiency photocatalytic filter screen for VOC treatment comprises the following specific steps:
(1) mixing and stirring the dispersing agent and the distilled water uniformly;
(2) adding the photocatalyst into the mixed solution obtained in the step (1), and stirring and dispersing uniformly;
(3) adding a wetting agent, a curing agent and the water-based industrial paint into the dispersion liquid obtained in the step (2), stirring and uniformly dispersing to obtain a photocatalytic suspension;
(4) and (4) spraying the photocatalytic suspension liquid obtained in the step (3) onto a metal filter screen by using a high-pressure spraying device, and drying for 3min at 40 ℃ to obtain the high-efficiency photocatalytic filter screen.
Example 3
The high-efficiency photocatalytic filter screen for VOC treatment is prepared by spraying a photocatalytic suspension on a metal filter screen, wherein the photocatalytic suspension comprises the following components in parts by mass: 75 parts of water, 2 parts of photocatalyst, 0.3 part of dispersing agent, 2 parts of wetting agent, 3 parts of curing agent and 6 parts of aqueous industrial paint. The photocatalyst is titanium dioxide, graphite-like carbon nitride, cadmium sulfide, GO/TiO2One or more of the above. The size range of the particle diameter of the photocatalyst is between 20 and 100 nm; the dispersant is one or a combination of more of hybrid silicon, sodium hexametaphosphate and sodium tripolyphosphate; the water-based industrial paint is one or a combination of more of water-based alkyd, water-based epoxy, water-based acrylic, water-based fluorocarbon and water-based double-component polyurethane; the filter screen carrier comprises but is not limited to a stainless steel filter screen, an aluminum alloy filter screen and the like;
a preparation method of a high-efficiency photocatalytic filter screen for VOC treatment comprises the following specific steps:
(1) mixing and stirring the dispersing agent and the distilled water uniformly;
(2) adding the photocatalyst into the mixed solution obtained in the step (1), and stirring and dispersing uniformly;
(3) adding a wetting agent, a curing agent and the water-based industrial paint into the dispersion liquid obtained in the step (2), stirring and uniformly dispersing to obtain a photocatalytic suspension;
(4) and (4) spraying the photocatalytic suspension liquid obtained in the step (3) onto a metal filter screen by using a high-pressure spraying device, and drying for 5min at the temperature of 60 ℃ to obtain the high-efficiency photocatalytic filter screen.
Example 4
The high-efficiency photocatalytic filter screen for VOC treatment is prepared by spraying a photocatalytic suspension on a metal filter screen, wherein the photocatalytic suspension comprises the following components in parts by mass: 65 parts of water, 10 parts of photocatalyst, 1.5 parts of dispersing agent, 1.8 parts of wetting agent, 1.5 parts of curing agent and 12 parts of aqueous industrial paint. The photocatalyst is titanium dioxide, graphite-like carbon nitride, cadmium sulfide, GO/TiO2One or more of the above. The size range of the particle diameter of the photocatalyst is between 20 and 100 nm; the dispersant is one or a combination of more of hybrid silicon, sodium hexametaphosphate and sodium tripolyphosphate; the water-based industrial paint is one or a combination of more of water-based alkyd, water-based epoxy, water-based acrylic, water-based fluorocarbon and water-based double-component polyurethane; the filter screen carrier comprises but is not limited to a stainless steel filter screen, an aluminum alloy filter screen and the like;
a preparation method of a high-efficiency photocatalytic filter screen for VOC treatment comprises the following specific steps:
(1) mixing and stirring the dispersing agent and the distilled water uniformly;
(2) adding the photocatalyst into the mixed solution obtained in the step (1), and stirring and dispersing uniformly;
(3) adding a wetting agent, a curing agent and the water-based industrial paint into the dispersion liquid obtained in the step (2), stirring and uniformly dispersing to obtain a photocatalytic suspension;
(4) and (4) spraying the photocatalytic suspension liquid obtained in the step (3) onto a metal filter screen by using a high-pressure spraying device, and drying for 5min at the temperature of 45 ℃ to obtain the high-efficiency photocatalytic filter screen.
Example 5
A high-efficient photocatalysis filter screen for VOC administers, it adopts photocatalysis suspensionThe photocatalyst is prepared by spraying the photocatalyst on a metal filter screen, and the photocatalytic suspension comprises the following components in parts by mass: 68 parts of water, 8 parts of photocatalyst, 0.8 part of dispersing agent, 1.5 parts of wetting agent, 2.5 parts of curing agent and 8 parts of aqueous industrial paint. The photocatalyst is titanium dioxide, graphite-like carbon nitride, cadmium sulfide, GO/TiO2One or more of the above. The size range of the particle diameter of the photocatalyst is between 20 and 100 nm; the dispersant is one or a combination of more of hybrid silicon, sodium hexametaphosphate and sodium tripolyphosphate; the water-based industrial paint is one or a combination of more of water-based alkyd, water-based epoxy, water-based acrylic, water-based fluorocarbon and water-based double-component polyurethane; the filter screen carrier comprises but is not limited to a stainless steel filter screen, an aluminum alloy filter screen and the like;
a preparation method of a high-efficiency photocatalytic filter screen for VOC treatment comprises the following specific steps:
(1) mixing and stirring the dispersing agent and the distilled water uniformly;
(2) adding the photocatalyst into the mixed solution obtained in the step (1), and stirring and dispersing uniformly;
(3) adding a wetting agent, a curing agent and the water-based industrial paint into the dispersion liquid obtained in the step (2), stirring and uniformly dispersing to obtain a photocatalytic suspension;
(4) and (4) spraying the photocatalytic suspension liquid obtained in the step (3) onto a metal filter screen by using a high-pressure spraying device, and drying for 3min at 55 ℃ to obtain the high-efficiency photocatalytic filter screen.
Comparative example 1
The comparative example provides a high-efficiency photocatalytic filter screen for VOC treatment, and the conditions are completely the same as those in example 1 except that no dispersant is added in the raw materials.
Comparative example 2
The comparative example provides a high-efficiency photocatalytic filter screen for VOC treatment, and the conditions are completely the same as those in example 1 except that no wetting agent is added in the raw materials.
Comparative example 3
The comparative example provides a high-efficiency photocatalytic filter screen for VOC treatment, and the conditions are completely the same as those in example 1 except that no curing agent is added in the raw materials.
Comparative example 4
The comparative example provides a high-efficiency photocatalytic filter screen for VOC treatment, and the conditions are completely the same as those in example 1 except that no water-based industrial paint is added in the raw materials.
Comparative example 5
The comparative example provides a high-efficiency photocatalytic filter screen for VOC treatment, and the conditions are completely the same as those in example 1 except that the raw material ratio is different. The comparative example comprises the following raw materials in parts by mass: 70 parts of water, 20 parts of photocatalyst, 1 part of dispersing agent, 1.2 parts of wetting agent, 2 parts of curing agent and 9 parts of aqueous industrial paint.
Comparative example 6
The comparative example provides a high-efficiency photocatalytic filter screen for VOC treatment, and the conditions are completely the same as those in example 1 except that the raw material ratio is different. The comparative example comprises the following raw materials in parts by mass: 70 parts of water, 1 part of photocatalyst, 1 part of dispersing agent, 1.2 parts of wetting agent, 2 parts of curing agent and 9 parts of aqueous industrial paint.
Comparative example 7
The comparative example provides a high-efficiency photocatalytic filter screen for VOC treatment, and the conditions are completely the same as those in example 1 except that the preparation method does not comprise a drying step.
The filter screens prepared in the above examples and comparative examples are subjected to performance tests, referring to the performance test method of the GB/T23761-2009 photocatalytic air purification material, formaldehyde, acetaldehyde and benzene are taken as typical VOCs components, and the results are as follows:
degradation rate of formaldehyde Acetaldehyde degradation rate Degradation rate of benzene
Example 1 95.9％ 93.7％ 94.5％
Example 2 85.5％ 81.8％ 82.5％
Example 3 79.2％ 76.3％ 78.2％
Example 4 94.8％ 92.3％ 93.8％
Example 5 95.1％ 92.9％ 94％
Comparative example 1 60.2％ 55.3％ 56.8％
Comparative example 2 95.7％ 92.8％ 94.3％
Comparative example 3 95.1％ 92％ 94.1％
Comparative example 4 66.1％ 58.2％ 60.9％
Comparative example 5 94.9％ 91.2％ 93.5％
Comparative example 6 65.1％ 63.7％ 62.8％
Comparative example 7 95.6％ 92.9％ 94.2％
After the filter screens prepared in the above examples and comparative examples are brushed for 50 times, performance tests are performed, referring to a performance test method of a GB/T23761-2009 photocatalytic air purification material, formaldehyde, acetaldehyde and benzene are taken as typical VOCs, and the results are as follows:
Figure BDA0003312276570000081
Figure BDA0003312276570000091
according to the data, the filter screen still has higher catalytic degradation efficiency after being scrubbed for 50 times, in addition, the catalyst dispersion liquid system sprayed on the filter screen is environment-friendly, the degradation rate of typical VOCs components such as formaldehyde, acetaldehyde and benzene is higher, and the catalyst falling rate is very low after the filter screen is scrubbed for many times.

Claims (10)

1. The high-efficiency photocatalytic filter screen for VOC treatment is characterized by being prepared by spraying a photocatalytic suspension on a metal filter screen, wherein the photocatalytic suspension comprises the following components in parts by mass: 60-75 parts of water, 2-10 parts of photocatalyst, 0.3-1.5 parts of dispersing agent, 0.5-2 parts of wetting agent, 1-3 parts of curing agent and 6-12 parts of aqueous industrial paint.
2. A high-efficiency photocatalytic filter screen for VOC treatment is characterized in that the photocatalyst is titanium dioxide, graphite-like carbon nitride, cadmium sulfide, GO/TiO2One or more of (a).
3. The high-efficiency photocatalytic filter screen for VOC treatment is characterized in that the size range of the particle size of a photocatalyst is 20-100 nm.
4. The high-efficiency photocatalytic filter screen for VOC treatment is characterized in that the dispersing agent is one or more of hybrid silicon, sodium hexametaphosphate and sodium tripolyphosphate.
5. The high-efficiency photocatalytic filter screen for VOC treatment is characterized in that the water-based industrial paint is one or more of water-based alkyd, water-based epoxy, water-based acrylic, water-based fluorocarbon and water-based two-component polyurethane.
6. The utility model provides a high-efficient photocatalysis filter screen for VOC administers which characterized in that, metal filter screen material be stainless steel or aluminum alloy.
7. A photocatalytic suspension is characterized by comprising the following components in parts by mass: 60-75 parts of water, 2-10 parts of photocatalyst, 0.3-1.5 parts of dispersing agent, 0.5-2 parts of wetting agent, 1-3 parts of curing agent and 6-12 parts of aqueous industrial paint.
8. Use of the photocatalytic suspension according to claim 7 in the treatment of VOCs.
9. The preparation method of the high-efficiency photocatalytic filter screen for VOC (volatile organic compound) treatment according to any one of claims 1 to 6, is characterized by comprising the following steps:
mixing and stirring the dispersing agent and the distilled water uniformly;
adding a photocatalyst into the mixed solution, and stirring and dispersing uniformly;
adding a wetting agent, a curing agent and the water-based industrial paint into the dispersion liquid, stirring and uniformly dispersing to obtain a photocatalytic suspension;
and (3) spraying the photocatalytic suspension liquid on the metal filter screen by adopting a spraying device, and drying to obtain the high-efficiency photocatalytic filter screen.
10. The preparation method of the high-efficiency photocatalytic filter screen for VOC treatment according to claim 9, wherein the drying step is as follows: oven drying at 40-60 deg.C for 3-5 min.
CN202111220090.1A 2021-10-20 2021-10-20 Efficient photocatalytic filter screen for VOC (volatile organic compounds) treatment and preparation method thereof Pending CN113813943A (en)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1515352A (en) * 2003-08-28 2004-07-28 上海交通大学 Preparation method of load type photocatalytic purification net block
CN109777230A (en) * 2019-02-25 2019-05-21 牟富书 A kind of light catalyzed coating and preparation method thereof
CN110003749A (en) * 2019-04-24 2019-07-12 河南建筑材料研究设计院有限责任公司 A kind of high efficiency photocatalysis coating

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Publication number Priority date Publication date Assignee Title
CN1515352A (en) * 2003-08-28 2004-07-28 上海交通大学 Preparation method of load type photocatalytic purification net block
CN109777230A (en) * 2019-02-25 2019-05-21 牟富书 A kind of light catalyzed coating and preparation method thereof
CN110003749A (en) * 2019-04-24 2019-07-12 河南建筑材料研究设计院有限责任公司 A kind of high efficiency photocatalysis coating

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