Preparation method of ceramic membrane loaded zinc oxide photocatalyst

Abstract

The invention relates to a preparation method of a ceramic membrane loaded zinc oxide photocatalyst, and belongs to the technical field of catalysis. A ceramic membrane acts as a carrier of the catalyst. The preparation method comprises the following steps: loading a layer of zinc oxide nano seed crystals on the surface of the ceramic membrane by adopting a dip-coating calcination method, and then preparing the ceramic membrane loaded zinc oxide photocatalyst by a hydrothermal method. The preparation method of the ceramic membrane loaded zinc oxide photocatalyst has the advantages that the photocatalyst is loaded to the surface of the ceramic membrane so as to prevent the problem of subsequent separation difficulty of the catalyst and a product. The catalyst is simple in preparation technology, is high in photocatalysis performance, and can be well applied to the catalytic degradation process.

Description

technical field

[0001] The invention relates to a method for preparing a supported catalyst, in particular to a method for preparing a photocatalyst, and belongs to the technical field of catalysis. Background technique

[0002] As a photocatalyst with excellent performance, nano-ZnO has the same band gap as nano-TiO 2 It is similar, and the preparation operation is simple and the price is low, so it has attracted more and more attention in the field of photocatalysis. There are two ways of photocatalyst application: suspension state and supported type. Although the photocatalytic method in the suspension state has the advantages of high reaction rate, relatively easy reactor design, and convenient process operation, due to the small particle size of nano-semiconductors, it is difficult to separate and recover solids and liquids, resulting in increased processing costs, which are limited in practical applications. . The supported photocatalytic method can solve the proble...

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