Preparation method, product and applicationof weak light photocatalyst composite formaldehyde removal spray

A low-light, aldehyde spray technology, applied in the fields of nanotechnology and fine chemicals, can solve problems such as high efficiency and low formaldehyde removal efficiency, and achieve the effects of simple preparation method, long-term effective formaldehyde removal, and improved dispersibility.

Pending Publication Date: 2021-04-20
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of existing photocatalysts with high efficiency under ultraviolet light and low formaldehyde removal efficiency under visible light, the purpose of the present invention is to provide a method for preparing a low-light photocatalyst compound and high-efficiency formaldehyde removal spray

Method used

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  • Preparation method, product and applicationof weak light photocatalyst composite formaldehyde removal spray
  • Preparation method, product and applicationof weak light photocatalyst composite formaldehyde removal spray
  • Preparation method, product and applicationof weak light photocatalyst composite formaldehyde removal spray

Examples

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Effect test

Embodiment 1

[0024] A kind of low-light photocatalyst composite aldehyde-removing spray, with 1 kilogram of this low-light photocatalyst composite aldehyde-removal spray, prepare a dispersion liquid with a zinc oxide content of 1%, and the particle diameter of the silver-modified nano-zinc oxide powder used is 30 Around nanometers, the ingredient list is as follows in Table 1:

[0025]

[0026] Preparation method: In container A, mix stearic acid, sodium lauryl sulfonate, and Litsea pepper extract according to the addition amount in the table, heat to 60°C, stir while heating to make it fully melt, Form a uniform and transparent liquid state; at the same time, in the B container, add carbomer to water and stir to form a uniform solution, then add silver-modified nano-zinc oxide powder, heat to 60°C, and stir while heating to form a dispersion Good slurry; then, under rapid stirring, add phase A at 70°C to phase B at 60°C, then use a high-speed homogenizer to homogenize for 2 minutes, an...

Embodiment 2

[0029] A kind of low-light photocatalyst composite aldehyde-removing spray, with 1 kilogram of this low-light photocatalyst composite aldehyde-removal spray, prepare a dispersion liquid with a zinc oxide content of 1%, and the particle diameter of the silver-modified nano-zinc oxide powder used is 30 Around nanometers, the ingredient list is as follows in Table 2:

[0030]

[0031]Preparation method: In container A, mix stearic acid, sodium lauryl sulfate, and lysozyme according to the addition amount in the table, heat to 50°C, stir while heating, make it fully melt, and form a uniform and transparent Liquid state; at the same time, in container B, add carbomer to water and stir to form a uniform solution, then add silver-modified nano-zinc oxide powder, heat to 80°C, and stir while heating to form a well-dispersed slurry; Then, under rapid stirring, add phase A at 50°C to phase B at 80°C, then use a high-speed homogenizer to homogenize for 2 minutes, and cool to room temp...

Embodiment 3

[0034] A kind of low-light photocatalyst composite aldehyde-removing spray, with 1 kilogram of this low-light photocatalyst composite aldehyde-removal spray, prepare a dispersion liquid with a zinc oxide content of 1%, and the particle diameter of the silver-modified nano-zinc oxide powder used is 30 Around nanometers, the ingredient list is as follows in Table 3:

[0035]

[0036] Preparation method: In container A, mix stearic acid, sodium lauryl sulfate, and lysozyme according to the addition amount in the table, heat to 60°C, stir while heating, make it fully melt, and form a uniform and transparent Liquid state; at the same time, in container B, add carbomer to water and stir to form a uniform solution, then add silver-modified nano-zinc oxide powder, heat to 70°C, and stir while heating to form a well-dispersed slurry; Then, under rapid stirring, add phase A at 60°C to phase B at 70°C, then use a high-speed homogenizer to homogenize for 2 minutes, and cool to room tem...

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Abstract

The invention discloses a preparation method, a product and an application of a weak light photocatalyst composite formaldehyde removal spray. An efficient weak light photocatalyst, a weak light photocatalyst and a bio-enzyme composite formaldehyde removal spray are prepared by a liquid phase, doping, surface modification and composite method, the modified nano zinc oxide particle is less than 20 nanometers, the dispersion liquid strength D90 is less than 100 nanometers, and the dispersity of the system is greatly improved; the solid content of the photocatalyst is 1%, so that the additive amount is reduced; in the dispersion system, the nano zinc oxide particles are suspended in the solution in a monodisperse form; and the biological enzyme and the 'capture degradation agent' have the effects of adsorbing, capturing, locking and continuously decomposing harmful gas. The used raw materials are high in chemical stability, non-toxic, tasteless and non-volatile, have certain antibacterial property, and cannot cause secondary pollution. The raw material cost is relatively low, the preparation method is simple and convenient, and formaldehyde pollutants in a room and indoor air can be effectively removed, so that the indoor air is purified.

Description

technical field [0001] The invention relates to a preparation method of a low-light photocatalyst composite aldehyde-removing spray, its product and application, and belongs to the field of nanotechnology and fine chemical industry. Background technique [0002] Formaldehyde is a colorless, irritating, water-soluble gas. It is a highly toxic substance, and formaldehyde ranks second on the list of priority control of toxic chemicals in my country. There is always a pungent smell in the renovated room, and if you stay there for a long time, people will have adverse reactions such as dizziness, glare, sore throat, and chest tightness, which are mostly intuitive manifestations of the hazards of formaldehyde. According to the analysis of indoor air testing data from all over the country, there are different degrees of air pollution in the indoor air after decoration, among which formaldehyde pollution is the most serious. The main sources of indoor formaldehyde are interior dec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/72B01D53/00
Inventor 崔大祥林琳朱正邬淑红吴晓燕
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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