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Date of Publication:2012-01-01

Journal:纳米技术与精密工程

Issue:4

Page Number:298-301

ISSN No.:1672-6030

Abstract:In order to develop TiO2 film photocatalyst with high photocatalytic activity,uniform TiO2 film was prepared by annealing TiN film,which was fabricated by a facile method including two steps:putting Ti wafer into a stable TiN nanoparticle suspension and then drying this system to obtain TiN/Ti film.The annealing temperature was optimized and the optimal one was 500 ℃.TiO2 prepared at the temperature had a polycrystalline anatase structure,and its absorption edge was about 400 nm.The photocatalytic degradation efficiency of phenol on the TiO2 film was up to 88％ in 3 h,whereas it was only 62％ on TiO2-P25.The kinetic constant of phenol degradation on the TiO2 film was 2.2 times as great as that on TiO2-P25.Hence,the TiO2 film displayed better photocatalytic ability than TiO2-P25 film.

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