Method for producing nano-wire array film of titanium dioxide

Abstract

The invention discloses a method for preparing a titanium dioxide nano-wire array film. The method comprises the following steps: mixing hydrofluoric acid, nitric acid and deionized water to prepare an acid wash; adding melamine and nitric acid into a hydrogen peroxide solution to obtain a reaction solution; washing the surface of a metal titanium plate by the acid wash to be immersed in the reaction solution to react for 60 to 72 hours at a temperature of between 60 and 90 DEG C; and washing the reacted titanium plate by the deionized water to be dried, and insulating the titanium plate for 1 to 2 hours at a temperature of between 350 and 550 DEG C. The method for preparing the titanium dioxide nano-wire array film does not need a template or a catalyst, and has the advantages of simpleness and feasibility, low cost, pure film, regular size arrangement, perfect crystallization, large specific surface area and firm combination with a substrate, and the titanium dioxide nano-wire arrayfilm has wide application in photocatalysis, photoelectrocatalysis, thin-film solar cell, gas sensor, cold cathode electronic emission and other fields.

Description

A method for preparing titanium dioxide nanowire array film technical field The invention relates to a method for preparing titanium dioxide nanowire arrays. Background technique TiO thin films have a wide range of potential applications in photocatalysis, photoelectrocatalysis, gas sensors, thin-film solar cells, electrochromic thin films, and field emission. Titanium dioxide ordered array films with nanostructures such as nanorods, nanoflowers, nanotubes, and nanowires have extremely high specific surface areas, and thus exhibit excellent performance in the above applications. In addition, compared with dense films composed of ordinary nanoparticles, ordered array films such as titanium dioxide nanorods and nanowires have better space charge separation effects, which are important for photocatalysis, photoelectrocatalysis and photoanodes. . So far, whether it is anatase or rutile phase titanium dioxide nanowire arrays, most of them are made by the following different m...

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Problems solved by technology

However, there is no simple method for preparing titania nanowire array films without adding templates and catalysts.

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