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中文摘要：
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%.
英文摘要：
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（λ420 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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