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Double wave band ultraviolet quartz lamp module

A dual-band, quartz lamp technology, applied in the field of photocatalytic materials, can solve the problems of small powder specific surface area, high recombination rate of photo-generated electrons and photo-generated holes, easy aggregation, etc., to achieve extended service life, good UV-visible light absorption performance, The effect of high photocatalytic efficiency

Inactive Publication Date: 2018-11-27
JIANGSU LANG YI ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary TiO 2 The specific surface area of ​​the powder is relatively small, and the recombination rate of photogenerated electrons and photogenerated holes is high, so the quantum efficiency is low
Nano-TiO 2 Although the specific surface area is large and there are many catalytic active centers available, the surface energy of nanoparticles is high and easy to aggregate, which reduces their catalytic activity. Therefore, if TiO 2 The good photocatalytic effect of semiconductor catalysts requires TiO 2 Catalyst for curing dispersion and surface modification

Method used

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  • Double wave band ultraviolet quartz lamp module
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preparation example Construction

[0049] The preparation method of above-mentioned nano photocatalytic material of the present invention, comprises the steps:

[0050] 1) Slowly add isopropyl titanate to the acid under vigorous stirring, continue to stir, and adjust the pH to 3-4 through dialysis to obtain a uniform transparent titanium dioxide sol;

[0051] 2) taking the copper salt solution and adding it to the titanium dioxide sol prepared in step 1), stirring evenly to obtain a mixed solution;

[0052] 3) Mix the mixed solution obtained in step 2) with mesoporous SiO 2 Mix, stir evenly to form a suspension, then dry in an oven, grind into fine powder, and roast to obtain anatase TiO 2 Nanoparticles and Copper Nanoparticles Supported Mesoporous SiO 2 photocatalyst materials.

[0053] Preparation of nano photocatalytic materials in photocatalytic coating:

[0054] 1) Slowly add 50mL of isopropyl titanate dropwise to 200mL of nitric acid solution with a molar concentration of 0.1-0.5mol / L under room tempe...

Embodiment

[0058] Apply the above-mentioned nano-photocatalytic material on the metal mesh to obtain a photocatalytic coating with a thickness of 0.5mm, and the metal mesh 2 with the photocatalytic coating is set on the outside of the dual-band ultraviolet quartz lamp tube 1, wherein the photocatalytic The coating is applied to the side of the metal mesh facing the lamp. Connect the contact piece insert 5 to the pin of the lamp socket and turn on the power supply through the ultraviolet ballast, and the dual-band ultraviolet quartz lamp tube 1 works normally.

[0059] The above-mentioned dual-band ultraviolet quartz lamp module is used to test the killing rate of germs. Escherichia coli is used as the target strain, and the metal mesh with photocatalytic coating with an area of ​​1cm×1cm is exposed to ultraviolet light of 180-200nm and 200-280nm. Under irradiation, Escherichia coli can be completely killed in only 2 hours, showing excellent bactericidal effect. In addition, the catalyst...

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Abstract

The invention provides a double wave band ultraviolet quartz lamp module. The double wave band ultraviolet quartz lamp module includes a double wave band ultraviolet quartz lamp tube and a metal meshwith a photocatalytic coating, wherein the metal mesh sleeves the outer side of the double wave band ultraviolet quartz lamp tube; and the photocatalytic coating is made of a nano-photocatalytic material, takes h mesoporous SiO2 as the matrix, and anatase TiO2 nanoparticles and metallic copper nanoparticles are arranged in the pores of the mesoporous SiO2. The double wave band ultraviolet quartz lamp module utilizes ultraviolet light of different wave bands, thus being able to kill bacteria more effectively, having high photocatalytic efficiency, and being able to effectively degrade the odorgas harmful to a human body in the air, and achieves the purpose of sterilization and deodorization.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials and relates to a dual-band ultraviolet quartz lamp module. Background technique [0002] Ultraviolet sterilization is a purely physical disinfection method without secondary pollution, so it is widely used in the fields of water treatment and air purification. Utilizing the principle and technology of photocatalytic oxidation, using ultraviolet light as the excitation light source, irradiating it on the metal mesh with photocatalytic coating, a photocatalytic reaction occurs, and hydroxyl radicals with strong oxidizing ability are generated, which can effectively kill bacteria and degrade air. The odorous gas that is harmful to the human body, and finally converts bacteria and odorous gas into carbon dioxide and water, so as to achieve the goal of sterilization and deodorization, and can produce superimposed effects, and play a strong role in water treatment and air purification. ...

Claims

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Application Information

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IPC IPC(8): H01J61/35H01J61/02
Inventor 朱黎李庆生
Owner JIANGSU LANG YI ENVIRONMENTAL TECH CO LTD