WO3/BiOCl, a novel heterojunction as visible light photocatalyst
WO3/BiOCl, a novel heterojunction as visible light photocatalyst
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WO3/BiOCl，一种新型异质结作为可见光光催化剂
DOI：
10.1016/j.jcis.2011.01.015
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发表时间：
2011-04-15
影响因子：
9.9
通讯作者：
Zhang, Jinlong
中科院分区：
文献类型：
--
作者：
Shamaila, Sajjad;Sajjad, Ahmed Khan Leghari;Zhang, Jinlong
以十二烷基硫酸钠为模板、尿素为水解剂，通过新的低温路线制备了氯氧化铋（BiOCl）纳米结构。 BiOCl 和氧化钨 (WO3) 之间开发出一种新型异质结，使其成为高效的可见光光催化剂。通过X射线衍射分析、拉曼光谱、热重分析、能量色散X射线光谱、扫描电子显微镜、透射电子显微镜和N-2吸附等温线对催化剂进行了表征。 WO3/BiOCl异质结系统有效地将吸收边延伸至可见光区域。在WO3/BiOCl复合材料中，BiOCl作为主要光催化剂，而WO3作为吸收可见光的光敏剂。单独的 BiOCl 和 WO3 在可见光照射下表现出非常低的光催化效率，但与 Degussa P25、纯 BiOCl 和 WO3 相比，它们的异质结在分解罗丹明 B 方面提供了意想不到的高效率。 (C) 2011 Elsevier Inc. 保留所有权利。
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.