无机材料学报

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原位合成TiO2纳米管阵列及其光催化性能研究

崔云涛, 王金淑, 李洪义, 王珍珍   

  1. 北京工业大学材料科学与工程学院, 新型功能材料教育部重点实验室, 北京 100124
  • 收稿日期:2008-01-03 修回日期:2008-03-19 出版日期:2008-11-20 网络出版日期:2008-11-20

Study on Synthesis in situ and Photocatalytic Activity of TiO2 Nanotubes Array Films

CUI Yun-Tao, WANG Jin-Shu, LI Hong-Yi, WANG Zhen-Zhen   

  1. Key Laboratory of new functional Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
  • Received:2008-01-03 Revised:2008-03-19 Published:2008-11-20 Online:2008-11-20

摘要: 采用液相沉积法(LPD), 以阳极氧化铝(AAO)为模板, 原位合成高度有序的TiO2纳米管薄膜材料. 实验结果表明, 经过400℃热处理后, 制备的TiO2纳米管为锐钛矿相, 长度达5μm, 管外径为150nm左右, 管壁厚为25nm左右. 热处理后的TiO2薄膜具有良好的光催化降解甲基蓝的性能, 即经过120min卤灯照射后, 甲基蓝被完全降解.

关键词: 氧化钛纳米管, 液相沉积, 光催化, 甲基蓝降解

Abstract: The highly ordered aligned titania nanotubes thin films were successfully prepared by liquid phase deposition (LPD) method. Anodic aluminum oxide (AAO) used as starting material was immersed in an aqueous ammonium hexafluorotitanate ((NH4)2TiF6) solution. The results show that anatase titania can be obtained after the thin films are annealed at 400℃ for 4h. The outside diameter of the titania nanotube is about 150nm and the wall thickness of the nanotubes is approximately 25nm. Moreover, the thickness of titania nanotube array is about 5μm. The annealed TiO2 thin films have good photocatalytic activity on the degradation of methyl blue, i.e., methyl blue can be entirely degradated after 120nm mercury arc irradiation.

Key words: TiO2 nanotubes, liquid phase deposition, photocatalysis, methyl blue degradation

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