Method for preparing flyash-supporting nanometer titanic oxide composite photochemical catalyst material

Abstract

The present invention discloses a method for preparing flyash-supporting nanometer titanic oxide composite photochemical catalyst material, including the following steps: (1) dissolving a formwork in a deionized water to form a homogeneous phase solution, then adding the tetramethyl ammonium hydroxide to obtain a homogeneous phase stable solution A; (2) mixing and agitating the titanoxy sulfate and the deionized water to form a stock white shape liquid, then adding the flyash powder to obtain a mixture B; (3) mixing the solution A and the mixture B, and aging; (4) finally laundering, drying and heat treating to obtain the flyash-supporting nanometer titanic oxide composite material. The dimension of the flyash-supporting nanometer titanic oxide composite photochemical catalyst material is from 10-20nm, and the nanometer particle is supported on the flyash particle surface uniformly. It is not only capable of reusing the solid wastes flyash, also resolving the storage and handling problem of the wastes, moreover the flyash has a strong adsorption capacity, which improves a photochemical catalyst degradation capability of a photocatalyst to an organic compound greatly.

Description

technical field [0001] The invention belongs to the field of inorganic materials, and mainly relates to a preparation method of a fly ash-loaded nano titanium dioxide composite material. Background technique [0002] Fly ash is solid waste discharged from thermal power plants or boilers of large enterprises after burning coal powder. The country's annual fly ash emissions have reached 160 million tons. If a large amount of fly ash is not properly disposed of, it will not only occupy a large area of ​​farmland, but also produce poplar dust that will seriously pollute the atmosphere and cause great harm to human health. Nano TiO 2 Particles are loaded on the surface of fly ash, and the nano-TiO 2 The particles are fixed to reduce the loss rate of catalyst particles. The strong adsorption and large specific surface area of ​​fly ash can adsorb organic pollutants such as pesticides on its surface, and then degrade them into non-polluting small molecules through photocatalysi...

AI Technical Summary

Problems solved by technology

However, the method of preparing fly ash-loaded titanium dioxide photocatalytic composite materials by chemical self-assembly technology has not been reported.