Photocatalytic degradation composite particle, and preparation method and application thereof

Abstract

The invention relates to the technical field of photocatalysis, and concretely relates to a photocatalytic degradation composite particle, and a preparation method and an application thereof. The photocatalytic degradation composite particle comprises nano-scale anatase titanium dioxide, silicon dioxide particles, triclinic FeVO4 crystal particles and a coupling agent. Rice straws can be used forproducing the silicon dioxide particles, the triclinic FeVO4 crystal particles are produced by utilizing corn corns, and the triclinic FeVO4 crystal particles, silicon dioxide particles and nanoscaleanatase titanium dioxide are mixed by utilizing the coupling agent. In a laboratory environment, methyl violet can be completely degraded within 150 min, the degradation capacity of the composite particle on wastewater is high, the use amount of titanium dioxide is greatly reduced, the production cost is reduced, waste is treated with waste, and a new application is provided for the rice straws and corn corns.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a photocatalytic degradation composite particle and a preparation method and application thereof. Background technique [0002] With the continuous and rapid development of industrialization and urbanization, the traditional soot-type pollution has not yet been controlled, and the composite air pollution caused by vehicle exhaust has become increasingly prominent. A large amount of nitrogen oxides and volatile organic compounds have caused fine particles, ozone, and acid rain in cities. Secondary pollution is intensifying, and a large amount of domestic wastewater and industrial wastewater are produced. At present, people will add photocatalysts for photolysis when treating wastewater. The degradation effect of photocatalysts is good and there will be no secondary pollution, but at present The production cost of photocatalyst particles is high, and it is difficult to use t...

AI Technical Summary

Problems solved by technology

[0002] With the continuous and rapid development of industrialization and urbanization, the traditional soot-type pollution has not yet been controlled, and the composite air pollution caused by vehicle exhaust has become increasingly prominent. A large amount of nitrogen oxides and volatile organic compounds have caused fine particles, ozone, and acid rain in cities. Secondary pollution is intensifying, and a large amount of domestic wastewater and industrial wastewater are produced. At present, people will add photocatalysts for photolysis when treating wastewater. The degradation effect of photocatalysts is good and there will be no secondary pollution, but at present The production cost of photocatalyst particles is high, and it is difficult to use them on a large scale. At the same time, in order to control air pollution, rice straw and corn straw in farmland are currently prohibited from burning, but leaving them in the field will affect the cultivation of the next year. Therefore, The government is also actively encouraging enterprises to purchase rice stalks and corn stalks for processing and production. However, the current use of rice stalks and corn stalks is too low, and the market demand is too low. How to increase the use of rice stalks and corn stalks is also a big problem that needs to be solved at present question