Neutral photocatalytic coating agent, preparation method and coating method thereof

A technology of photocatalysis and coating agent, which is applied in the field of photocatalysis, can solve the problems of acidic or alkaline wastewater discharge, corrosion and damage of substrate materials, and increase cost, etc., and achieves easy large-scale production and use, stable dispersion and suspension, and is not easy to fall off Effect

Inactive Publication Date: 2016-10-19
李建明
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  • Summary
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  • Description
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  • Application Information

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Problems solved by technology

At present, the common photocatalytic coating agents are more or less acidic or alkaline. On the one hand, they cause the discharge of acidic or alkaline wastewater, which inc

Method used

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preparation example Construction

[0040] An embodiment of the present application also provides a method for preparing a neutral photocatalytic coating agent as described above, which includes the following steps:

[0041] S1. Disperse 0.01 to 3 parts of the water-soluble titanium compound in 100 parts of the deionized water, and stir to form an aqueous titanium compound solution;

[0042] S2. Add 0.01 to 2 parts of the binder into the titanium compound aqueous solution formulated in step S1, and stir to form a titanium compound aqueous solution containing a binder;

[0043] S3. Add 0.1 to 20 parts of the nanometer photocatalytic material into the titanium compound aqueous solution containing the binder prepared in step S2, stir and mix evenly, and obtain a suspension of the titanium compound aqueous solution containing the photocatalytic material and the binder. turbid liquid;

[0044] S4. Add the pH adjuster to the suspension prepared in step S3 to adjust the pH of the suspension to 6 to 8, and the obtained...

Embodiment 1

[0051] Take 3 grams of water-soluble titanium compound, disperse it in 100 grams of deionized water under the condition of vigorous stirring, and continue to stir vigorously until an aqueous solution of titanium compound is formed; then, add 2 grams of viscose to the above aqueous solution of titanium compound under the condition of vigorous stirring Binder, continue to stir vigorously until the titanium compound aqueous solution containing the binder is formed; then, under the condition of vigorous stirring, slowly add 20 grams of nano-photocatalytic materials to the titanium compound aqueous solution containing the binder, and continue to stir vigorously for 2 Hour, obtain the suspension liquid of the titanium compound aqueous solution that contains photocatalyst material and binding agent; Subsequently, under the situation of violent stirring, slowly add pH value adjusting agent in above-mentioned suspension liquid, make the pH value adjustment of suspension liquid 6, the ob...

Embodiment 2

[0053] Take 1 gram of water-soluble titanium compound, disperse it in 100 grams of deionized water with vigorous stirring, and continue to stir vigorously until an aqueous solution of titanium compound is formed; then, add 1 gram of viscose to the above aqueous solution of titanium compound with vigorous stirring. Binder, continue to stir vigorously until an aqueous solution of titanium compound containing the binder is formed; then, under the condition of vigorous stirring, slowly add 10 grams of nano-photocatalytic materials to the aqueous solution of titanium compound containing the binder, and continue to stir vigorously for 2 Hour, obtain the suspension liquid of the titanium compound aqueous solution that contains photocatalyst material and binding agent; Subsequently, under the situation of violent stirring, slowly add pH value adjusting agent in above-mentioned suspension liquid, make the pH value adjustment of suspension liquid is 8, the obtained product is the neutral...

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Abstract

This application discloses a neutral photocatalytic coating agent, a preparation method and a coating method thereof. The neutral photocatalytic coating agent comprises, by mass, 0.1-20 parts of a nanometer photocatalytic material, 0.01-2 parts of a binder, 0.01-3 parts of a water-soluble titanium compound, a pH value adjusting agent, and 100 parts of deionized water, wherein the pH value of the neutral photocatalytic coating agent can achieve 6-8 with the pH value adjusting agent, the neutral photocatalytic coating agent further contains 0.001-0.2 part by mass of meta ions, and the metal ions are one or a mixture comprising a plurality of materials selected from gold ions, silver ion, platinum ion, palladium ion, rhodium ion, iridium ion, copper ions, iron ions, cobalt ions, nickel ions, manganese ions, vanadium ions, chromium ions, tantalum ions, lanthanum ions and cerium ions according to any ratios. The neutral photocatalytic coating agent of the present invention is neutral, non-corrosive and non-toxic, and has characteristics of environment protection, simpleness, easy obtaining, high transparency, stable dispersing and suspending property, and has high photocatalytic performance.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a neutral photocatalytic coating agent, a preparation method and a coating method thereof. Background technique [0002] Photocatalytic material is a substance that does not change itself under the irradiation of light, but can promote chemical reactions. Photocatalytic materials can decompose almost all organic substances and some inorganic substances that are harmful to the human body and the environment, and play a role in environmental purification. It can effectively use natural sunlight without causing waste of resources and formation of additional pollution. In order to maximize the photocatalytic efficiency of the photocatalytic material, it needs to be prepared in the nanometer scale. The nanoscale photocatalytic material has a large specific surface area, can absorb more organic matter, and exhibits a higher photocatalytic efficiency. However, there are some def...

Claims

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Application Information

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IPC IPC(8): B01J35/00B01J35/02B01J31/38C09D7/12B05D7/24B05D3/02
Inventor 李建明
Owner 李建明
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