Preparing method and application of compound titanate nanotube photocatalyst

Abstract

The invention discloses a preparation method of a composite titanate nano tube photocatalyst and application thereof, which relates to a preparation method of a nano tube photocatalyst and application thereof. The invention solves the problems that the present composite titanate nano tube photocatalysts have complicate preparation techniques, small loading which is only excited by ultraviolet light with poor stability. The method of the invention is as follows: metal salt is dissolved into ionized water, in which concentrated nitric acid is dripped, then the solution obtained is dripped into the solution prepared by titanium ester and diluent to be stirred, dried and sintered, then yield obtained is dispersed into oxyhydrogen sodium solution; after being reacted for 24-72 hours, the solution is washed to neutral before being carried out temperature reduction and heat preservation. The photocatalyst of the invention has high metal loading or the oxide loading which not only can be excited by the ultraviolet light but also can be excited by visible light. The catalytic performance of the invention is 3-15 times higher than common catalyst activity and can be used more than 100h stably, and service life thereof is 100-1000 hours. The method of the invention has simple technique.

Description

Preparation method and application of composite titanate nanotube photocatalyst technical field The invention relates to a preparation method and application of a nanotube photocatalyst. Background technique With the continuous development of human society, human activities and industrial production have continuously aggravated environmental pollution, and at the same time there has been a shortage of energy sources. How to control environmental pollution and find new energy sources has attracted more and more attention. Hydrogen, as a pollution-free and renewable energy among all energy sources, is undoubtedly a new generation of energy that will be widely used after non-renewable energy such as oil, coal and natural gas. Photocatalytic technology can solve energy and environmental problems well. The traditional preparation of composite metal / titanate nanotubes or metal oxide / titanate nanotubes mostly uses photolysis, gamma ray irradiation to decompose metal salts or ch...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problems that the existing preparation process of composite titanate nanotube catalyst is complicated, the loading capacity is small, it can only be excited by ultraviolet light, and the stability is poor, and a composite titanate nanotube catalyst is provided. Preparation method and application of tube photocatalyst