分级微球BiOBr和BiOI的制备及光催化活性比较  

Preparation and photocatalytic activity comparison of BiOBr and BiOI hierarchical microspheres photocatalyst

作　　者：林立[1,2] 黄满红[1] 龙立平[2] 陈东辉[1,3] 

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]湖南城市学院化学与环境工程学院,湖南益阳413000 [3]上海应用技术学院,上海200235

出　　处：《应用化工》2014年第8期1377-1380,共4页Applied Chemical Industry

基　　金：国家自然科学基金项目(21007010);湖南省交通厅科学研究项目(200908;201105)

摘　　要：以五水硝酸铋、溴化钠和碘化钾为原料,乙二醇为溶剂,采用一步溶剂热法制备了分级结构微球BiOBr和BiOI。比较了两种催化剂在可见光和模拟日光下对罗丹明B的降解效果。结果表明,在模拟日光和可见光下,BiOBr的催化活性要好于BiOI,同时对机理进行了深入探讨。The flower-like BiOBr and BiOI hierarchical microspheres were successfully synthesized via a facile one-step solvothermal method in ethylene glycol（EG）condition,using the Bi（NO3）3·5H2O,NaBr and KI as the raw materials. BiOBr’s and BiOI’s photocatalytic activities was compared by the photocata-lytic degradation of Rhodamine B. The results revealed that BiOBr exhibited a higher photocatalytic re-moval efficiency of RhB than BiOI under visible light and simulation solar irradiation. The possible mech-anism for the results was further proposed.

关 键 词：BiOBr BiOI 可见光 罗丹明B 

分 类 号：TQ426[化学工程]