文献类型：期刊文献

英文题名：WO₃/BiOCl, a novel heterojunction as visible light photocatalyst

作者：Shamaila, Sajjad;Sajjad, Ahmed Khan Leghari;Chen, Feng;Zhang, Jinlong[1]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2011

卷号：356

期号：2

起止页码：465

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000288527800012)】；

基金：This work has been supported by National Nature Science Foundation of China (20773039, 20977030), National Basic Research Program of China (973 Program, 2007CB613301, 2010CB732306), and Science and Technology Commission of Shanghai Municipality (10520709900, 10JC1403900), the Fundamental Research Funds for the Central Universities. Shamaila Sajjad and Sajjad Ahmed Khan Leghari thank the Higher Education Commission of Pakistan (HEC) for financial support.

语种：英文

外文关键词：BiOCl; WO3/BiOCl; Rhodamine B; Heterojunction; Photocatalysis

摘要：A bismuth oxychloride (BiOCl) nanostructure is prepared by a new low temperature route using sodium dodecyl sulfate as template and urea as hydrolytic agent. A novel heterojunction is developed between BiOCl and tungsten oxide (WO3) to make it an efficient visible light photocatalyst. The catalysts were characterized by X-ray diffraction analysis, Raman spectroscopy, thermogravimetric analysis, energy-dispersive X-ray spectroscopy, scanning electron microscopy, transmission electron microscopy, and N-2 sorption isotherms. The WO3/BiOCl heterojunction system extends the absorption edge to the visible region efficiently. BiOCl works as a main photocatalyst while WO3 acts as the photosensitizer absorbing visible light in the WO3/BiOCl composite. The individual BiOCl and WO3 show very low photocatalytic efficiency under visible light irradiation but their heterojunction provides unexpectedly high efficiency in decomposing rhodamine B as compared to Degussa P25, pure BiOCl, and WO3. (C) 2011 Elsevier Inc. All rights reserved.