高等学校化学学报

高等学校化学学报

• 研究简报 • 上一篇    下一篇

二氧化钛纳米管阵列的构建及其光电催化性能

刘萍1, 李新勇1, 王玉新1, 鞠晓东1, 陈国华2   

    1. 大连理工大学环境与生命学院, 工业生态与环境工程教育部重点实验室, 大连 116024;
    2. 香港科技大学化工系, 香港九龙清水湾
  • 收稿日期:2006-02-22 修回日期:1900-01-01 出版日期:2006-12-10 发布日期:2006-12-10
  • 通讯作者: 李新勇

Construction and Photoelectrocatalytic Properties of TiO2 Nanotubes Arrays on Titanium Substrates

LIU Ping1, LI Xin-Yong1, WANG Yu-Xin1, JU Xiao-Dong1, CHEN Guo-Hua2   

    1. Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental and Biological Science & Technology, Dalian University of Technology, Dalian 116024, China;
    2. Department of Chemical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
  • Received:2006-02-22 Revised:1900-01-01 Online:2006-12-10 Published:2006-12-10
  • Contact: LI Xin-Yong

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被引次数

63

摘要： 利用阳极氧化法制备了TiO2纳米管阵列, 研究了其光电化学性能, 并且应用该电极对偶氮染料催化降解进行了初步研究.

关键词: TiO2纳米管电极, 光电催化, 偶氮染料, 降解

Abstract: In this paper, vertically aligned nanotubes arrays of titanium oxide were fabricated on the surface of titanium substrate by direct anode oxidation with HF being the supporting electrolyte. Under the condition of applying the same bias on the electrodes, a higher anodic photocurrent of the TiO2 nanotubes electrode was obtained than that of TiO2 film electrode, which is due to the larger specific surface area, novel microstructure and higher efficient surface-interface electron migration of nanotube electrode. The degradation of a textile azo dye, Acid Orange 7(AO7), in aqueous solution with TiO2 nanotubes electrode was carried out using photoelectrocatalytic(PEC) process, comparing with electrochemical process(EP) and photocatalytic(PC). A significant photo-electrochemical synergetic effect was observed. The reason is attributed to the surface state characteristics and higher separation efficiency of photo-generated charge carrier of nanotube system.

Key words: TiO2 nanotube electrode, Photoelectrocatalysis, Azo dye, Degradation

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