| 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 |
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| 引用本文： | 邹学军,李新勇,肇启东,陈国华.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[J].高等学校化学学报,2012,33(5):1046-1049. |
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| 作者姓名： | 邹学军 李新勇 肇启东 陈国华 |
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| 作者单位： | 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;香港科技大学化工系 |
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| 基金项目： | 国家“八六三”计划重点项目(批准号:20010AA064902);国家自然科学基金(批准号:21061160495,20877013)资助 |
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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%.
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| 关 键 词： | 甲苯 LaVO4/TiO2纳米管 水热方法 光催化 |
| 收稿时间： | 2011-06-01 |
Preparation and Characterization of LaVO4/TiO2 Nanotubes and Their Application in Photocatalytic Degradation of Gaseous Toluene under Visible Light |
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| ZOU Xue-Jun,LI Xin-Yong,ZHAO Qi-Dong,CHEN Guo-Hua.Preparation and Characterization of LaVO4/TiO2 Nanotubes and Their Application in Photocatalytic Degradation of Gaseous Toluene under Visible Light[J].Chemical Research In Chinese Universities,2012,33(5):1046-1049. |
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| Authors: | ZOU Xue-Jun LI Xin-Yong ZHAO Qi-Dong CHEN Guo-Hua |
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| Institution: | 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) |
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| Abstract: | LaVO 4/TiO 2 nanotubes,which can response for visible light,were prepared by a facile hydrothermal method,and characterized by TEM,XRD and N 2 adsorption-desorption measurements as well as surface photovoltage spectroscopy.The photocatalytic activity of the LaVO 4/TiO 2 nanotubes was evaluated by degradation of gaseous toluene under visible light(λ>420 nm) irradiation.The doped LaVO 4 reduced the average crystal size,enhanced specific surface area and shifted the optical absorption edge to the visible region of TiO 2.The photocatalytic activity of LaVO 4/TiO 2 nanotubes was increased by 47% than pure TiO 2 nanotubes. |
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| Keywords: | Toluene LaVO 4/TiO 2 nanotube Hydrothermal method Photocatalysis |
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