CN113908628B - Cobalt-based oxide superfine glass fiber gas phase purification filter screen and preparation method thereof - Google Patents
Cobalt-based oxide superfine glass fiber gas phase purification filter screen and preparation method thereof Download PDFInfo
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- B01D46/0001—Making filtering elements
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- B01D53/34—Chemical or biological purification of waste gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
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- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
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Abstract
The invention discloses a cobalt-based oxide superfine glass fiber gas-phase purification filter screen, which comprises the following components: cobalt-based oxide composite nano particles (6-12 wt%), a bonding system (3-9 wt%) and superfine glass fiber cotton (79-91 wt%). The invention also discloses a preparation method of the purification filter screen, which comprises the steps of firstly molding the superfine glass fiber cotton containing the graphene seed layer and the bonding modification system by a wet papermaking process to prepare glass fiber filter paper, then introducing the cobalt-based oxide composite nano-scale particles by in-situ growth by a precipitation method, and then folding the prepared glass fiber filter paper by a folding machine and carrying out acid washing and etching. The material prepared by the invention has the functions of sterilizing and inactivating bacteria microorganisms under the conditions of low-temperature catalytic oxidation degradation of harmful gases and low power visible light, and has wide application prospect in the field of high-density volatile gas phase purification.
Description
Technical Field
The invention belongs to the technical field of composite functional materials, and particularly relates to a cobalt-based oxide superfine glass fiber gas phase purification filter screen and a preparation method thereof.
Background
At present, the threats of indoor volatile gases, harmful gases and bacterial microorganisms to human health are mainly expressed in the following aspects: VOCs molecules have pungent odor or foul odor, can cause discomfort in human senses such as nausea, headache, convulsion, coma and other symptoms, and seriously affect the daily life of people. The bacterial microorganisms themselves have toxicity and can cause pathological changes of nervous system, endocrine system, blood circulation system, respiratory system and urinary system. In view of the great harm of harmful gas and bacterial microbe to environment and human health, the air treatment is imperative. The photo-thermal catalytic oxidation method is a classical gas-solid heterogeneous catalytic reaction, the activation energy of chemical reaction is reduced by the action of a catalyst, meanwhile, reactant molecules are adsorbed to the surface of the catalyst and undergo deep oxidation-reduction reaction with active oxygen molecules on the surface of the catalyst, so that the reaction rate is improved, organic pollutants can be subjected to photo-thermal catalytic oxidation at a lower temperature, and the active oxygen finally converts the pollutants into harmless substances CO 2 And H 2 And O. Due to the catalytic oxidationThe cobalt-based oxide material is often used as single nano powder, which is not beneficial to recovery and is easy to cause secondary environmental damage, and the catalytic performance of the single cobalt oxide is not high. Therefore, the filter screen with the low-temperature photo-thermal catalytic oxidation VOCs degrading capability and the antibacterial and bacteriostatic capability is obtained by introducing the cobalt-based oxide particles on the high-temperature-resistant superfine glass fiber based on the precipitation etching method, the catalytic oxidation activity of the filter screen is improved by introducing the graphene, and the optimization of the treatment process of harmful volatile gas and bacterial microorganisms in the air is accelerated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a glass fiber filter screen loaded cobalt-based oxide composite material, a preparation method and an application thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
a cobalt-based oxide superfine glass fiber gas phase purification filter screen comprises the following components: 6-12 wt% of cobalt-based oxide nano particles, 3-9 wt% of a bonding system, and the balance of 79-91 wt% of superfine glass fiber cotton, wherein the total of the three raw materials is 100%.
Preferably, the superfine glass fiber cotton comprises the following components: siO2 2 ：56.5～66.5wt％，Al 2 O 3 ：2.5～7.5wt％，MgO：4.5～8.5wt％，CaO：1.5～4.5wt％，B 2 O 3 ：3～6.5wt％，Fe 2 O 3 + ZnO + BaO: 4.5-7.5 wt%, alkali metal oxide R 2 O(Na 2 O+K 2 O)：8～10.5wt％；
Preferably, the bonding system consists of a bonding agent and a modifying agent;
preferably, the binder is one or more of urea modified phenolic resin, polyurethane modified phenolic resin and melamine modified phenolic resin in pure acrylic emulsion, silicone acrylic emulsion, styrene-acrylic emulsion, vinyl acetate acrylic emulsion and modified phenolic resin, and the mass of the binder accounts for 2-5% of the total mass of the visible light photocatalytic air purification glass fiber filter element;
preferably, the modifier is one or more of KH550, KH560 and KH792 silane coupling agents, and the mass of the modifier is 1-4% of the total mass of the visible light photocatalytic air purification glass fiber filter core;
preferably, the cobalt-based oxide material is in a mesoporous structure in the shape of a hollow sphere or a hollow cube or polyhedron, the structure of a single-component metal oxide can be effectively changed by adding or doping other transition metals, the catalytic oxidation activity of the cobalt-based oxide material is improved, and the content of cobalt-based oxide composite nano-scale particles accounts for 6-12 wt% of the total weight of the cobalt-based oxide superfine glass fiber filter screen for gas phase degradation of VOCs;
preferably, the preparation method of the cobalt-based oxide material is characterized by comprising the following steps: a coprecipitation method;
a preparation method of a cobalt-based oxide superfine glass fiber gas phase purification filter screen comprises the following steps:
(1) Preparing cobalt-based oxide composite catalytic oxidation particle precursor A, B and C solutions;
(2) Selecting two or more glass fiber cottons with different diameters, putting the selected glass fiber cottons into the graphene A seed solution through a fiber dissociator, and stirring and dispersing the glass fiber cottons into uniform slurry;
(3) Conveying the slurry to a forming paper machine for wet forming, then soaking the formed wet paper in a bonding system, and then drying;
(4) Putting the prepared glass fiber filter screen into the solution C for full infiltration treatment, slowly dripping the solution B into the solution C, stirring for half an hour, aging for a period of time for coprecipitation, and ensuring that the manganese-cobalt-based oxide composite material grows in situ on each glass fiber;
(5) And (3) carrying out acid washing and etching on the glass fiber filter paper loaded with the manganese-cobalt-based oxide composite particles, drying and annealing to obtain the air purification glass fiber filter paper with the efficient catalytic degradation of VOCs, and then folding the prepared glass fiber filter element by a folding machine to finally obtain the gas phase purification glass fiber filter screen with low-temperature catalytic oxidation.
Preferably, the cobalt-based composite particle cobalt source in step (1) comprises: one or more of potassium cobalt cyanide, cobalt acetate and cobalt nitrate.
Preferably, the other metals of the cobalt-based composite particles in step (1) include: one or more of manganese oxides, iron oxides and nickel oxides.
Preferably, the method for the cobalt-based oxide ultrafine glass fiber filter screen composite catalytic oxidation particle precursor solution in the step 1 comprises the following steps: solution A: 1-10mg/mL of graphene seed layer solution; and B, liquid B: weighing a cobalt source and other metal oxide sources to prepare 60ml of water and ethanol of a 1-10Mmol precursor; and C, liquid C: weighing ammonium carbonate to prepare 90ml of 1-10Mmol base precipitation precursor aqueous solution;
preferably, the normal distribution of the diameters of the glass fiber cotton in the step (2) is between 0.6 and 4 mu m, the average fiber diameter is 2.2 mu m, the normal distribution of the fiber lengths of the superfine glass fiber cotton is between 15 and 30mm, and the average fiber length is 20mm;
optionally, the beating rotation speed of the fiber dissociator in the step (2) is 5000-12000 r/min, the concentration of the pulp is 5-10 wt%, and the pH value of the pulp is 3.0-5.0;
preferably, the drying treatment in the step (3) is drying for 5 +/-1 min on a drying plate at the temperature of 100-115 ℃;
preferably, the stirring time in the step (4) is 10-60min, and the precipitation time is 1-12h;
preferably, the acid washing solution in the step (5) is 0.1-1mol/L hydrochloric acid solution, and the etching time is 10-60min.
Preferably, the dry annealing condition in the step (5) is 200-400 ℃ annealing for 30-60min.
The invention has the beneficial effects that:
1. according to the invention, the spherical cobalt-based oxide-based catalytic oxidation material is tightly coated on each superfine glass fiber, so that the dispersibility of the nano powder is effectively improved, the finally prepared cobalt-based oxide superfine glass fiber filter screen has more excellent catalytic oxidation performance and longer service life; moreover, the degradation effect on harmful gas and bacterial microorganisms can be simultaneously realized, and the application range of the filter screen is enlarged.
2. The invention adopts cobalt-based oxide to catalyze and oxidize materials to grow on the surface of the glass fiber in situ. On the one hand, the catalytic performance is improved through the synergistic effect between other metal introduction and cobalt compounding and metal oxidation components, and meanwhile, the separation of photo-generated electron pairs can be effectively improved through the introduction of graphene, so that the photo-thermal catalytic oxidation activity on indoor VOCs gas and bacterial microorganisms under the low-temperature condition is achieved.
3. According to the invention, through the introduction of the cobalt-based oxide, the performance of the hollow structure for catalytic oxidative degradation of VOCs is greatly improved, the process flow is greatly simplified through a precipitation etching method, meanwhile, the increase of oxygen defects Ox in the mesoporous cobalt-based oxide can increase the adsorption of oxygen in the air, oxygen is further activated into active oxygen species, and harmful gases and bacterial microorganisms are sufficiently combined to carry out catalytic degradation.
Drawings
FIG. 1 is a schematic view of a cobalt-based oxide microglass fiber gas phase purification screen;
FIG. 2 is a schematic diagram showing the result of microwave synthesis of graphene-based body-coated ultrafine glass fibers;
FIG. 3 is a schematic view of a scanning electron microscope for microwave synthesis of graphene substrate coated with ultrafine glass fibers;
Detailed Description
The present invention will be further described in the following examples, which are provided to illustrate the present invention with reference to the accompanying drawings, but the present invention is not limited thereto, and all similar methods and similar variations thereof are included in the scope of the present invention.
Example 1
Preparing a graphene seed layer solution with 2mg/mL of liquid A, a water-ethanol equal ratio solution with 2Mmol of cobalt sulfate and 60mL of manganese sulfate of liquid B, and an aqueous solution with 4Mmol of ammonia acetate of liquid C, fully shaking for 30min to obtain a cobalt-based oxide precursor solution, taking 40 parts of superfine glass fiber cotton with the diameter of 3.0 mu m and 10 parts of superfine glass fiber cotton with the diameter of 0.6 mu m, soaking in the liquid A for 10min, scattering the glass fiber cotton at the speed of 6000 rpm for 3min by a fiber dissociator, and preparing a paper pulp suspension with the mass concentration of 6%. And (4) transporting the paper pulp to a forming paper machine through a pulp conveyer to form and manufacture the paper into sheets through wet forming. And then soaking the formed wet paper in a binder system which is prepared by mixing and diluting polyurethane modified phenolic resin and KH550 into a binder system accounting for 3% of the weight, and drying the wet paper on a drying plate at the temperature of 100 ℃ for 5min. And (3) putting the prepared filter paper into the liquid C for fully soaking for 10min, slowly pouring the liquid B, stirring for 20min, and precipitating for 3h. And (3) placing the sample into 0.1mol/L hydrochloric acid solution for etching for 10min, and finally annealing at 200 ℃ for 30min to prepare the cobalt-based oxide-based superfine glass fiber filter screen for VOCs gas-phase degradation. The prepared manganese cobalt oxide superfine glass fiber filter screen for gas phase degradation of VOCs can remove 100% of 600ppm toluene at 350 ℃, inactivate 100% of colon bacillus under 60W LED irradiation within 2 hours, and has the filtering resistance of 480Pa, the filtering efficiency of 99.999% and the strength of 0.9KN/m.
Example 2
Preparing a graphene seed layer solution with 6mg/mL of solution A, a water-ethanol equal ratio solution with 60mL of 6Mmol of cobalt nitrate and ferrous nitrate in solution B and an aqueous solution with 90mL of 5Mmol of ammonium acetate in solution C, and fully shaking for 30min to obtain the iron-cobalt precursor solution. Soaking 40 parts of superfine glass fiber cotton with the diameter of 3.0 mu m and 10 parts of superfine glass fiber cotton with the diameter of 0.6 mu m in the A solution for 20min, and scattering the glass fiber cotton by a fiber dissociator at the speed of 7000 r/min for 4min to prepare paper pulp suspension with the mass concentration of 7%. And (4) transporting the paper pulp to a forming paper machine through a pulp conveyer to form and manufacture the paper into sheets through wet forming. And then soaking the formed wet paper in a binder system which is prepared by mixing and diluting polyurethane modified phenolic resin and KH550 into 6% by weight, and drying on a drying plate at 100 ℃ for 5min. And (3) putting the prepared filter paper into the liquid C for fully soaking for 20min, slowly pouring the liquid B, stirring for 40min, precipitating for 8h, putting the sample into a 0.5mol/L hydrochloric acid solution for etching for 30min, and finally annealing the sample at 300 ℃ for 40min to prepare the manganese cobalt oxide superfine glass fiber filter screen for gas phase degradation of VOCs. The prepared iron-cobalt oxide superfine glass fiber filter screen for gas phase degradation of VOCs can remove 99% of toluene with the concentration of 900ppm at 300 ℃, inactivate 100% of colon bacillus under the irradiation of 60W LED within 1 hour, and has the filtering resistance of 480Pa, the filtering efficiency of 99.999% and the strength of 0.9KN/m.
Example 3
Preparing a graphene seed layer solution with 8mg/mL of the solution A, preparing a water and ethanol solution with 60mL of cobalt chloride and nickel chloride in the solution B and a water and ethanol solution with 90mL of ammonium acetate in the solution C in an amount of 9Mmol, and fully shaking for 30min to obtain a nickel-cobalt oxide precursor solution. Soaking 40 parts of superfine glass fiber cotton with the diameter of 3.5 microns and 10 parts of superfine glass fiber cotton with the diameter of 0.6 microns in the A solution for 30min, and scattering the glass fiber cotton by a fiber dissociator at the speed of 8000 rpm for 4min to prepare paper pulp suspension with the mass concentration of 10%. And (4) transporting the paper pulp to a forming paper machine through a pulp conveyer to form and manufacture the paper into sheets through wet forming. And then soaking the formed wet paper in a binder system formed by mixing and diluting polyurethane modified phenolic resin and KH550 into 9% by weight, and drying the wet paper on a drying plate at the temperature of 100 ℃ for 5min. And (3) putting the prepared filter paper into the liquid C for fully soaking for 30min, slowly pouring the liquid B, stirring for 40min, and precipitating for 12h. And (3) placing the sample into 0.8mol/L hydrochloric acid solution for etching for 50min, and finally annealing the sample at 300 ℃ for 40min to prepare the nickel-cobalt superfine glass fiber filter screen for VOCs gas-phase degradation. The prepared nickel-cobalt superfine glass fiber filter screen for gas-phase degradation of VOCs can remove 99% of 1000ppm toluene at 220 ℃, inactivate 100% of colon bacillus under 60W LED irradiation within 30min, and has the filtering resistance of 480Pa, the filtering efficiency of 99.999% and the strength of 0.9KN/m.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (25)
1. A preparation method of a cobalt-based oxide superfine glass fiber gas phase purification filter screen is characterized by comprising the following steps:
step 1, preparing solutions A, B and C of manganese-cobalt-based oxide catalytic oxidation particle precursors, wherein the solution A is a graphene solution, the solution B is a solution containing cobalt and manganese, and the solution C is an ammonium carbonate or ammonium acetate solution; the concentration of the solution A is 1-10mg/mL;
step 2, selecting two or more glass fiber cottons with different diameters, putting the selected glass fiber cottons into the graphene A solution through a fiber dissociator, and stirring and dispersing the selected glass fiber cottons into uniform slurry;
step 3, conveying the slurry to a forming paper machine for wet forming, then soaking the formed wet paper in a bonding system, and then drying;
step 4, putting the prepared glass fiber filter screen into the solution C for full infiltration treatment, meanwhile, slowly dripping the solution B into the solution C, and stirring to ensure that manganese-cobalt-based oxide composite nanoparticles grow and precipitate in situ in each glass fiber;
step 5, carrying out acid washing and etching on the glass fiber filter paper loaded with the manganese-cobalt-based oxide composite particles, carrying out drying and annealing treatment to prepare the air purification glass fiber filter paper with high-efficiency catalytic degradation of volatile gas, then carrying out folding treatment on the prepared glass fiber filter core by a folding machine to finally prepare the gas phase purification glass fiber filter screen with low-temperature catalytic oxidation, wherein,
the superfine glass fiber gas phase purification filter screen of low temperature catalytic oxidation includes: 6-12 wt% of manganese cobalt-based oxide composite nano particles, 3-9 wt% of a bonding system and the balance of superfine glass fiber cotton; the manganese-cobalt-based oxide composite nano particles are spherical and have mesopores which are hollow structures, and the particle diameter is 100-500nm; the superfine glass fiber gas phase purification filter screen further comprises graphene, and the graphene can provide growth sites for manganese-cobalt-based oxide composite nanoparticles.
2. The method for preparing cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the ultrafine glass fiber cotton is composed of: siO2: 56.5-66.5 wt%, al2O3: 2.5-7.5 wt%, mgO: 4.5-8.5 wt%, caO: 1.5-4.5 wt%, B2O3: 3-6.5 wt%, fe2O3+ ZnO + BaO: 4.5-7.5 wt%, alkali metal oxide R2O:8 to 10.5 weight percent.
3. The method for preparing a cobalt-based oxide ultrafine glass fiber gas-phase purification filter screen according to claim 1, wherein the fiber diameter of the ultrafine glass fiber cotton is normally distributed between 0.6 and 4 μm, the average fiber diameter is 2.2 μm, the fiber length of the ultrafine glass fiber cotton is normally distributed between 15 and 30mm, and the average fiber length is 20mm.
4. The method for preparing a cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the ultrafine glass fiber wool forms a three-dimensional mesh porous structure, and ultrafine glass fibers with different diameters are overlapped in a cross manner.
5. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen as claimed in claim 1, wherein the bonding system is composed of a bonding agent and a modifier which are mixed according to different proportions.
6. The method for preparing the cobalt-based oxide ultrafine glass fiber gas-phase purification filter screen according to claim 5, wherein the binder is one or more of urea modified phenolic resin, polyurethane modified phenolic resin and melamine modified phenolic resin in acrylic emulsion, silicone acrylic emulsion, styrene-acrylic emulsion, vinyl acetate acrylic emulsion and modified phenolic resin, and the mass of the binder is 2-5% of the total mass of the cobalt-based oxide ultrafine glass fiber gas-phase purification filter screen.
7. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 5, wherein the modifier is one or more of KH550, KH560 and KH792 silane coupling agents, and the mass of the modifier is 1-4% of the total mass of the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen; the modifier is used for improving the water resistance of the cobalt-based oxide superfine glass fiber gas phase purification filter screen and prolonging the service life.
8. The method for preparing the cobalt-based oxide ultrafine glass fiber gas-phase purification filter screen according to claim 1, wherein the cobalt source in the solution B is one or more of cobalt chloride, cobalt acetate and cobalt nitrate.
9. The method for preparing a cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the solution B further comprises one or more of iron species and nickel species.
10. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 9, wherein the iron species is one or more of ferrous nitrate, ferrous chloride and ferrous sulfate.
11. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 9, wherein the nickel species is one or more of nickel nitrate, nickel sulfate and nickel acetate.
12. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the manganese source in the solution B is one or more of manganese acetate, manganese chloride, manganese nitrate, manganese acetate tetrahydrate and manganese sulfate.
13. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the beating rotation speed of the fiber dissociator in the step 2 is 5000-12000 r/min, the pulp concentration is 5-10 wt%, and the pH value of the pulp is 3.0-5.0.
14. The method for preparing a cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the drying treatment in step 3 is baking on a baking plate at 100-115 ℃ for 5 ± 1min.
15. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the ultrafine glass fiber in the step 3 is used as a high temperature resistant material, so that the problem of recycling manganese cobalt-based oxide powder materials is solved, and meanwhile, a three-dimensional network structure provides excellent air filtration performance.
16. The method for preparing a cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the manganese-cobalt-based oxide composite nanoparticles of step 4 are introduced into the ultrafine glass fiber filter screen by in-situ growth through a precipitation etching method.
17. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the stirring time of step 4 is 10-60min, and the precipitation time is 1-24 h.
18. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the acid washing solution in the step 5 is 0.1-1mol/L hydrochloric acid solution, and the etching time is 10-60min.
19. The method for preparing cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the manganese-cobalt-based oxide nanoparticles of step 5 are closely coated and uniformly distributed on ultrafine glass fibers.
20. The method for preparing a cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the manganese-cobalt-based oxide nanoparticles of step 5 are attached to the ultrafine glass fiber gas phase purification filter screen while the three-dimensional porous structure of the ultrafine glass fiber gas phase purification filter screen is still maintained, and the filter screen has good air filtration performance.
21. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen as claimed in claim 1, wherein the addition of the graphene A seed solution is beneficial to the subsequent dispersion of the cobalt-based oxide and increases the growth sites thereof, and the addition of the graphene can effectively improve the catalytic oxidation performance of the filter screen on harmful gases by increasing the specific surface area of the composite material.
22. The method of claim 1, wherein the catalytic oxidation mechanism of the cobalt-based oxide microglass fiber gas phase purification filter screen is that adsorbed harmful gas molecules react with oxygen species on the surface of the cobalt-based oxide, resulting in the reduction of metal oxide; the sites of metal oxide reduction are immediately reoxidized by the gas phase oxygen.
23. The preparation method of the cobalt-based oxide superfine glass fiber gas phase purification filter screen as claimed in claim 1, wherein the manganese-cobalt-based oxide composite nano particles are unique mesoporous materials, have low diffusion resistance, are easy to contact with reactants, contain abundant metal ions and sufficient pore channels, have high specific surface area and are beneficial to exposure of active sites; the porous hollow structure further increases the contact area of the catalyst and the gas.
24. The method for preparing a cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the ultrafine glass fiber gas phase purification filter screen is made of materials with the area size controlled according to specific use conditions, and meanwhile, harmful gas can be repeatedly degraded for multiple times, so that the service life of the filter screen is prolonged.
25. The method for preparing the cobalt-based oxide ultrafine glass fiber gas phase purification filter screen according to claim 1, wherein the gas phase purification filter screen has the effects of removing peculiar smell and sterilizing.
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| US6358871B1 (en) * | 1999-03-23 | 2002-03-19 | Evanite Fiber Corporation | Low-boron glass fibers and glass compositions for making the same |
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| CN111892330B (en) * | 2020-07-29 | 2022-02-25 | 重庆文理学院 | Superfine glass fiber cotton felt for photocatalytic air purification and preparation method thereof |
| CN112516685A (en) * | 2020-11-17 | 2021-03-19 | 华东师范大学重庆研究院 | Visible light photocatalysis air purification glass fiber filter element and preparation method thereof |
| CN113230749B (en) * | 2021-04-02 | 2023-07-18 | 云南华谱量子材料有限公司 | Rod-shaped zinc oxide-based composite nanoparticle glass fiber filter element and preparation method thereof |
| CN113230748A (en) * | 2021-04-02 | 2021-08-10 | 云南华谱量子材料有限公司 | Flower-shaped zinc oxide-based composite nanoparticle glass fiber filter element and preparation method thereof |
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