Efficient Degradation of Benzene over LaVO4/TiO2 Nanocrystalline Heterojunction Photocatalyst under Visible Light Irradiation
Efficient Degradation of Benzene over LaVO4/TiO2 Nanocrystalline Heterojunction Photocatalyst under Visible Light Irradiation
复制标题
可见光照射下 LaVO4/TiO2 纳米晶异质结光催化剂高效降解苯
DOI：
10.1021/es900393h
复制
发表时间：
2009-06-01
影响因子：
11.4
通讯作者：
Fu, Xianzhi
中科院分区：
文献类型：
--
作者：
Huang, Hanjie;Li, Danzhen;Fu, Xianzhi
采用简单的偶联方法成功制备了LaVO 4/TiO 2异质结可见光催化剂。采用粉末X射线衍射、氮气吸附-脱附、透射电子显微镜、紫外-可见漫反射光谱、X射线光电子能谱、光致发光和电化学技术对催化剂进行了表征。结果表明，所制备的纳米复合催化剂在可见光照射下对苯的降解具有较强的光催化活性和较高的光化学稳定性。LaVO 4/TiO 2的光催化性能的提高不仅归因于带电位的匹配，而且归因于LaVO 4和TiO 2纳米颗粒之间的异质结。
A nanocrystal heterojunction LaVO4/TiO2 visible light photocatalyst has been successfully prepared by a simple coupled method. The catalyst was characterized by powder X-ray diffraction, nitrogen adsorption-desorption, transmission electron microscopy, UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectra, photoluminescence, and electrochemistry technology. The results showed that the prepared nanocomposite catalysts exhibited strong photocatalytic activity for decomposition of benzene under visible light irradiation with high photochemical stability. The enhanced photocatalytic performance of LaVO4/TiO2 may be attributed to not only the matched band potentials but also interconnected heterojunction of LaVO4 and TiO2 nanoparticles.