Photocatalytic properties of hierarchical BiOXs obtained via an ethanol-assisted solvothermal process

作     者：Manke Jia Xiaolong Hu Shulian Wang Yingping Huang Lirong Song 

作者机构：Institute of Hydrobiology Chinese Academy of Sciences Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of Education China Three Gorges University Collaborative Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2015年第27卷第9期

页      面：172-180页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：supported by the National Natural Science Foundation of China (Nos. 21377067, 21177072, 21207079) Natural Science Foundation for Innovation Group of Hubei Province, China (No. 2009CDA020) open fund (KF2011-07) from the State Key Laboratory of Environmental Chemistry and Ecotoxicology, RCEES, CAS 

主　　题：BiOXs(X_Cl Br I) Ethanol-assisted solvothermal process Photocatalytic properties 

摘      要：In this study, bismuth oxyhalide（Bi OXs（X_Cl, Br, I）） semiconductors were prepared by a simple solvothermal method, with ethanol serving as solvent and a series of tetrabutylammonium halide surfactants as halogen sources. Under identical synthetic conditions, Bi OBr was more readily constructed into regular flower-like hierarchical architectures. The photocatalytic properties of the materials were studied by monitoring the degradation of rhodamine B（Rh B）,with visible light absorption, and colorless salicylic acid（SA）. It was found that both Rh B and SA were rapidly degraded on the surface of Bi OBr. Bi OCl was rather active for the degradation of Rh B,but ineffective toward the degradation of SA. However, neither Rh B nor SA could be degraded effectively in the case of Bi OI. Further experiments such as UV–visible spectroscopy and detection of U OH and O2 Uradicals suggest that the electronic structure of the Bi OX photocatalysts is responsible for the difference in their activities.