Spraying method of titanium dioxide photocatalyst and spraying equipment of spraying method

Abstract

The invention discloses a spraying method of a titanium dioxide photocatalyst and spraying equipment of the spraying method. The spraying method comprises the following steps that S1, raw materials are provided, the raw materials are prepared from the following components in weight by percentage: 1%-5% of copper salt,1%-5% of sodium salt, 1%-5% of aluminum salt, 1%-4% of nitric acid, 0.1%-0.8% ofnano silver, 0.1%-0.5% of nano palladium, 0.1%-0.5% of nano gold, 50% of deionized water and 29.2%-45.7% of nano titanium dioxide; S2, the titanium dioxide photocatalyst is prepared; S3, profiles arefixed; S4, spraying is carried out; S5, the angle of a spraying pipe or the positions of the profiles are adjusted; S6, spraying again is carried out; and S7, the step S5 and the step S6 are repeated.Compared with the prior art, precious metal is added in the titanium dioxide photocatalyst used in the spraying method of the titanium dioxide photocatalyst, the catalytic effect of the titanium dioxide photocatalyst is significantly improved. After pollutants are degraded repeatedly, the catalyst is not prone to inactivating, the service life is longer, and the durability is higher.

Description

【Technical field】 [0001] The invention relates to the technical field of titanium dioxide photocatalysts, in particular to a method and equipment for spraying titanium dioxide photocatalysts. 【Background technique】 [0002] The principle of photocatalysis is based on the redox ability of photocatalysts under the condition of light, so that the purpose of purifying pollutants, material synthesis and transformation can be achieved. Typically, photocatalytic oxidation uses semiconductors as catalysts and light as energy to degrade organic matter into carbon dioxide and water. Therefore, photocatalytic technology, as an efficient and safe environment-friendly environmental purification technology, has been recognized by the international academic community for the improvement of indoor air quality. [0003] There are actually many types of photocatalysts, including titanium dioxide, zinc oxide, tin oxide, zirconium dioxide, cadmium sulfide and other oxide sulfide semiconductors...

AI Technical Summary

Problems solved by technology

[0003] There are actually many types of photocatalysts, including titanium dioxide, zinc oxide, tin oxide, zirconium dioxide, cadmium sulfide and other oxide sulfide semiconductors. In addition, some silver salts and porphyrins also have catalytic effects, but they are basically all There is a disadvantage: there is loss, that is, it will be consumed before and after the reaction, and most of them have certain toxicity to the human body

[0004] Titanium dioxide photocatalyst has the function of decomposing pollutants. In order to better ensure the quality of the indoor environment, it can be sprayed on the profile, and then the profile is placed indoors to facilitate the purification of the indoor gas environment. However, the existing titanium dioxide photocatalyst The catalytic efficiency is low, the catalyst is easily deactivated, and the existing equipment generally sprays it on flat profiles, and the tubular profiles cannot be sprayed well, which is not conducive to use

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