高等学校化学学报

高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (05): 1046.doi: 10.3969/j.issn.0251-0790.2012.05.033

• 物理化学 • 上一篇    下一篇

可见光响应的LaVO4/TiO2 纳米管的合成、表征及对气相甲苯的光催化性能

邹学军1, 李新勇1,2, 肇启东1, 陈国华2   

  1. 1. 大连理工大学环境学院, 工业生态与环境工程教育部重点实验室, 精细化工国家重点实验室, 大连 116023;
    2. 香港科技大学化工系, 九龙
  • 收稿日期:2011-06-01 出版日期:2012-05-10 发布日期:2012-05-10
  • 作者简介:李新勇, 男, 博士, 教授, 博士生导师, 主要从事环境催化与材料研究. E-mail: xyli@dlut.edu.cn
  • 基金资助:

    国家"八六三"计划重点项目(批准号: 20010AA064902)和国家自然科学基金(批准号: 21061160495, 20877013)资助.

Preparation and Characterization of LaVO4/TiO2 Nanotubes and Their Application in Photocatalytic Degradation of Gaseous Toluene under Visible Light

ZOU Xue-Jun1, LI Xin-Yong1,2, ZHAO Qi-Dong1, CHEN Guo-Hua2   

  1. 1. School of Environmental Science and Technology, State Key Laboratory of Fine Chemical, Key Laboratory of Industrial Ecology and Environmental Engineering of Ministry of Education, Dalian University of Technology, Dalian 116023, China;
    2. Department of Chemical Engineering, Hong Kong University of Science & Technology, Kowloon, China
  • Received:2011-06-01 Online:2012-05-10 Published:2012-05-10

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摘要： 通过水热方法合成了可见光响应的LaVO4/TiO2纳米管, 采用XRD, TEM, 氮气吸附-脱附以及表面光电压谱对样品进行了表征. 以气相甲苯为典型污染物, 研究了制备样品在可见光(λ＞420 nm)条件下的光催化性能. 实验结果表明, LaVO4的复合使TiO2的粒径减小, 比表面积增大, 光响应范围向可见光偏移. 光催化实验结果表明, 在可见光条件下, LaVO4/TiO2纳米管降解甲苯的效率比其它样品高, 与纯TiO2纳米管相比, 降解效率提高了47%.

关键词: 甲苯, LaVO4/TiO2纳米管, 水热方法, 光催化

Abstract: LaVO4/TiO2 nanotubes, which can response for visible light, were prepared by a facile hydrothermal method, and characterized by TEM, XRD and N2 adsorption-desorption measurements as well as surface photovoltage spectroscopy. The photocatalytic activity of the LaVO4/TiO2 nanotubes was evaluated by degradation of gaseous toluene under visible light(λ＞420 nm) irradiation. The doped LaVO4 reduced the average crystal size, enhanced specific surface area and shifted the optical absorption edge to the visible region of TiO2. The photocatalytic activity of LaVO4/TiO2 nanotubes was increased by 47% than pure TiO2 nanotubes.

Key words: Toluene, LaVO4/TiO2 nanotube, Hydrothermal method, Photocatalysis

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