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Environment-friendly efficient photocatalyst formaldehyde scavenger

A formaldehyde scavenger and photocatalyst technology, applied in the field of chemical industry, can solve the problems of secondary pollution, high toxicity of compounds, limited adsorption capacity, etc., and achieve the effect of mild application conditions and good formaldehyde removal performance.

Active Publication Date: 2015-08-12
ZHEJIANG BINGCHONG ENVIRONMENT PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (1) Those using physical adsorption, such as activated carbon, bamboo charcoal, etc., have limited adsorption capacity, are inconvenient to use, and often need to be replaced, causing secondary pollution;
[0010] (2) Chemical adsorption is adopted. Although the effect of processing formaldehyde is good, the compound added in the scavenger is more toxic and not environmentally friendly. For example, the Chinese invention patent with application number 201410542797.8 discloses a formaldehyde scavenger containing hydrazide (hydrazine) compound with formaldehyde scavenging effect), there is free hydrazine in use, which is toxic, and will cause environmental pollution after long-term use, and affect the health of users in the living room;
[0011] (3) The use effect of some commercially available products will be limited by the application environment. Most formaldehyde scavengers contain titanium dioxide. For example, the Chinese invention patent with application number 201210279279.2 discloses an indoor formaldehyde pollution removal catalyst, which contains titanium dioxide and dioxalic acid Hydrazine, etc., because titanium dioxide is an ultraviolet photocatalyst, the removal effect of formaldehyde is extremely limited under natural light or no light conditions, and has application limitations

Method used

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  • Environment-friendly efficient photocatalyst formaldehyde scavenger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] An environment-friendly high-efficiency photocatalyst formaldehyde scavenger, which consists of the following components by weight percentage: 10g of silk peptide-based surfactant, 8g of 5,5-dimethylimidazolidine-2,4-dione, platinum-loaded nano-anatase Mineral type titanium dioxide 2g, nano-silver colloid 0.1g, pure water 79.9g.

[0041]The preparation process is as follows:

[0042] (1) Take the platinum-loaded nano-anatase titanium dioxide and nano-silver colloid of the prescription amount and add them to 69.9g of pure water, mix and stir for 30 minutes to obtain a mixed solution;

[0043] (2) Add the silk fibroin peptide-based surfactant and 5,5-dimethylimidazolidine-2,4-dione in the prescribed amount into 10 g of pure water, and stir evenly to obtain a mixed solution;

[0044] (3) Add the mixed solution obtained in step (2) to the mixed solution obtained in step (1), and stir for 30 minutes to obtain the finished product.

Embodiment 2

[0046] An environment-friendly high-efficiency photocatalyst formaldehyde scavenger, which is composed of the following components by weight percentage: 1500g of silk peptide-based surfactant, 500g of 5,5-dimethylimidazolidine-2,4-dione, platinum-loaded nano-anatase Mineral type titanium dioxide 400g, nano-silver glue 50g, pure water 7550g.

[0047] The preparation process is as follows:

[0048] (1) Get the platinum-loaded nano-anatase titanium dioxide and nano-silver colloid of the prescription amount and add them to 6550g pure water, mix and stir for 20 minutes to obtain a mixed solution;

[0049] (2) Take the silk fibroin peptide-based surfactant and 5,5-dimethylimidazolidine-2,4-dione in the prescribed amount and add them to 1000g of pure water, stir evenly to obtain a mixed solution;

[0050] (3) Add the mixed solution obtained in step (2) to the mixed solution obtained in step (1), and stir for 40 minutes to obtain the finished product.

Embodiment 3

[0052] An environment-friendly high-efficiency photocatalyst formaldehyde scavenger, which consists of the following components by weight percentage: 5g of silk fibroin peptide-based surfactant, 10g of 5,5-dimethylimidazolidine-2,4-dione, platinum-loaded nano anatase Mineral type titanium dioxide 8g, nano-silver colloid 0.1g, pure water 76.9g.

[0053] The preparation process is as follows:

[0054] (1) Take the platinum-loaded nano-anatase titanium dioxide and nano-silver colloid of the prescription amount and add them to 66.9g of pure water, mix and stir for 40 minutes to obtain a mixed solution;

[0055] (2) Add the silk fibroin peptide-based surfactant and 5,5-dimethylimidazolidine-2,4-dione in the prescribed amount into 10 g of pure water, and stir evenly to obtain a mixed solution;

[0056] (3) Add the mixed solution obtained in step (2) to the mixed solution obtained in step (1), and stir for 20 minutes to obtain the finished product.

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Abstract

The invention provides an environment-friendly efficient photocatalyst formaldehyde scavenger. The contained components have non-toxic and environment-friendly effects, formaldehyde can be efficiently scavenged, the application range is wide, and the defects in the prior art are solved. The invention specifically provides the environment-friendly efficient photocatalyst formaldehyde scavenger which is prepared from the following components by weight percent: 5-15% of a silk fibroin peptide-based surfactant, 5-10% of a formaldehyde scavenger, 1-8% of a photocatalyst, 0.1-0.5% of nano silver colloids and the balance being pure water. The invention further provides a preparation method of the environment-friendly efficient photocatalyst formaldehyde scavenger.

Description

technical field [0001] The invention belongs to the field of chemistry and chemical engineering, and in particular relates to an environment-friendly high-efficiency photocatalyst formaldehyde scavenger. The scavenger is mainly suitable for removing free formaldehyde in indoor air, artificial boards, wallpapers and textiles. Background technique [0002] Formaldehyde is a colorless, soluble, irritating gas. It is recognized as a highly toxic substance. Formaldehyde can be absorbed through the respiratory tract, and damage the body by increasing tissue active oxygen, lipid peroxidation, and affecting the body's immune system, causing bronchial asthma, etc.; formaldehyde also has a stimulating effect on the skin and mucous membranes, which can cause allergic dermatitis, Pigmentation, skin necrosis, etc.; In addition, formaldehyde is also highly carcinogenic and can cause nose cancer, blood cancer, etc. Moreover, high concentrations of formaldehyde are harmful to the respirato...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/30A62D101/28
CPCA62D3/30A62D2101/28
Inventor 石锋陈坚李灵卫
Owner ZHEJIANG BINGCHONG ENVIRONMENT PROTECTION TECH CO LTD
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