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Filter screen usable for air purifier and preparation method of filter screen

An air purifier and filter technology, which is applied in the field of air purification, can solve the problems of active layer precursor aggregation, non-uniform dispersion, and small air resistance, and achieve enhanced catalytic oxidation performance and reaction stability, enhanced adsorption, and wind resistance low effect

Active Publication Date: 2019-04-05
苏州科佳环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defects of the existing filter screens with large filter resistance, active layer precursors aggregated and not evenly dispersed, the invention discloses a filter screen that can be used for air purifiers and a preparation method thereof. On the one hand, the surface of the nickel foam screen itself With a certain roughness, it can be modified without pretreatment, and its air resistance is small. On the other hand, a layer of carbon microspheres is coated on the surface of the filter, and the catalytic active components are loaded on this basis, so that Optimizes the overall catalytic performance of the filter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Modification of foamed nickel mesh

[0026] Weigh a certain amount of sucrose and dissolve it in distilled water and stir it at room temperature to dissolve it completely, then add a foam nickel mesh to it to completely immerse it in the solution and treat it under 200w ultrasonic conditions for 60 min, then transfer the whole mixture to water Treat the reaction kettle at 200°C for 6 hours, and after the reaction kettle is cooled to room temperature, a modified nickel foam mesh coated with carbon microsphere coating will be obtained, and the obtained product will be dried at 105°C for 12 hours. Roasting at 500°C under an argon atmosphere for 3 hours to obtain a modified nickel foam mesh; wherein the mass volume ratio of sucrose to deionized water is 0.1g / mL, and the weight ratio of foam nickel mesh to sucrose is 1:0.05;

[0027] 2) Active component TiO 2 load

[0028] Dissolve ammonium fluorotitanate and urea in an aqueous solution to form a mixed solution with a m...

Embodiment 2

[0034] 1) Modification of nickel foam mesh

[0035] Weigh a certain amount of sucrose and dissolve it in distilled water and stir it at room temperature to dissolve it completely, then add foam nickel mesh to it to completely immerse it in the solution and treat it under 400w ultrasonic conditions for 30 min, then transfer the whole mixture to water Treat in the thermal reaction kettle at 220°C for 4 hours, after the reaction kettle is cooled to room temperature, the modified nickel foam mesh coated with carbon microsphere coating on the surface will be obtained, and the obtained product will be dried at 110°C for 12 hours Roasting treatment for 3 hours at 520°C under an argon atmosphere to obtain a modified nickel foam mesh; wherein the mass volume ratio of sucrose to deionized water is 0.2g / mL, and the weight ratio of foam nickel mesh to sucrose is 1:0.15;

[0036] 2) Active component TiO 2 load

[0037] Dissolve ammonium fluorotitanate and urea in an aqueous solution to f...

Embodiment 3

[0043] 1) Modification of nickel foam mesh

[0044] Weigh a certain amount of sucrose and dissolve it in distilled water and stir it at room temperature to dissolve it completely, then add foam nickel mesh to it to completely immerse it in the solution and treat it under 300w ultrasonic conditions for 45 min, then transfer the whole mixture to water Treat in the thermal reaction kettle at 210°C for 5 hours, after the reaction kettle is cooled to room temperature, the modified nickel foam mesh coated with carbon microsphere coating on the surface will be obtained, and the obtained product will be dried at 100°C for 12 hours Roasting at 480°C under an argon atmosphere for 3 hours to obtain a modified nickel foam mesh; wherein the mass volume ratio of sucrose to deionized water is 0.3g / mL, and the weight ratio of nickel foam mesh to sucrose is 1:0.1;

[0045] 2) Active component TiO 2 load

[0046] 1) Dissolve ammonium fluorotitanate and urea in an aqueous solution to form a mi...

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Abstract

The invention discloses a filter screen usable for an air purifier and a preparation method of the filter screen. The filter screen comprises a substrate layer and an activity layer, the substrate layer is provided with a modified foam nickel screen coated with a carbon micro-sphere coating, and the activity layer is provided with TiO2 co-doped Pt, Ag, N and F. The preparation method of the filterscreen includes the steps: firstly, performing reaction on the foam nickel screen in sugar solution, and performing drying and roasting to obtain the substrate layer; secondly, soaking the substratelayer into mixed solution of ammonium fluorotitanate, urea and deionized water to perform reaction, drying and roasting to obtain the filter screen with the surface with N and F co-doped TiO2 coatings; dissolving chloroplatinic acid and silver nitrate in distilled water, stirring mixture for 30 minutes at room temperature, adding sodium dodecyl benzene sulfonate to continue to stir mixture for 30minutes, and dripping sodium borohydride solution into solution to obtain impregnation liquid; soaking the filter screen with the surface with N and F co-doped TiO2 coatings into the impregnation liquid to perform reaction and drying to obtain the filter screen. The filter screen is small in air resistance and good in catalytic performance.

Description

technical field [0001] The invention belongs to the technical field of air purification, and relates to a filter screen, in particular to a filter screen which can be used for an air purifier and a preparation method thereof. Background technique [0002] Indoor is one of the most frequent and intimate environments that people come into contact with. People spend about 80-90% of their time indoors in a day, so the quality of the indoor environment directly affects people's health. Formaldehyde, toluene and PM2.5 are important components of indoor air pollutants. In order to reduce indoor air health risks, the use of air purifiers is one of the most effective means. In commonly used air purifiers, the combination of HEPA and activated carbon components can effectively remove dust, harmful gases and bacterial microorganisms, so as to achieve the purpose of clean air. However, both high-efficiency filters and activated carbon work by trapping pollutants on the material, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20B01D46/00
CPCB01D39/20B01D46/0001B01D46/0027B01D46/0036
Inventor 王强
Owner 苏州科佳环境科技有限公司
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