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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (21): 2363-2369. 上一篇    下一篇

研究论文

高度有序的二氧化钛纳米管阵列的制备及其光催化活性的研究

庄惠芳，赖跃坤，李静，孙岚，林昌健   

  1. (固体表面物理化学国家重点实验室 厦门大学化学化工学院 厦门 361005)
  • 投稿日期:2007-01-23 修回日期:2007-06-21 发布日期:2007-11-14
  • 通讯作者: 林昌健

Fabrication of Highly Ordered Titanium Dioxide Nanotube Array and Investigation of Its Photocatalytic Activity

ZHUANG Hui-Fang; LAI Yue-Kun; LI Jing; SUN Lan; LIN Chang-Jian   

  1. (State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineer-ing, Xiamen University, Xiamen 361005)
  • Received:2007-01-23 Revised:2007-06-21 Published:2007-11-14
  • Contact: LIN Chang-Jian

PDF

1266

被引次数

62

采用电化学阳极氧化法在钛表面构筑了一种结构有序、微米级的TiO2纳米管阵列膜层. 考察了制备电压、氧化时间、溶液搅拌等实验参数对TiO2纳米管阵列形貌和尺寸的影响. 应用SEM和XRD对膜层的形貌和晶型进行了分析和表征, 并通过TiO2纳米管阵列膜对甲基橙的光催化降解, 研究了TiO2纳米管阵列膜层结构与光催化活性的关系. 结果表明: 阳极电压和溶液搅拌对制备TiO2纳米管阵列的结构起到关键的作用. 控制20 V电压制备的TiO2纳米管阵列膜, 管长达2.6～3.3 μm, 经500 ℃热处理后具有最高的光催化活性, 其光催化性能明显优于一般的TiO2纳米颗粒膜.

关键词: TiO2纳米管阵列, 阳极氧化, 制备, 光催化活性

A highly ordered titanium dioxide (TiO2) nanotube array film on titanium substrate was fabricated by using an electrochemical anodic oxidation method, and some preparation parameters of the TiO2 nanotube arrays were investigated as well. The SEM and XRD experiments were performed to characterize the morphology and crystalline phase of the TiO2 nanotube arrays. It was found that the morphology of the TiO2 nanotube arrays was greatly associated with the anodization voltage. The photocatalytic activity of the TiO2 nanotube array film was evaluated by the decolorization of methyl orange under the illumination of a high-pressure mercury lamp. The results showed that the TiO2 nanotube arrays prepared at 20 V and annealed at 500 ℃ exhibited the best photocatalytic activity to the degradation of methyl orange. And the photocatalytic activity of the TiO2 nanotube array film was much higher than that of the regular TiO2 nanoparticle film.

Key words: TiO2 nanotube array, anodic oxidation, fabrication, photocatalytic activity