分级微球BiOI的制备及其可见光光催化性能  

Preparation of BiOI hierarchical microspheres photocatalysts and their visible-light-driven photocatalytic properties

作　　者：王磊[1] 张新欣[1] 薛芒[1] 董晓丽[1] 

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2017年第3期180-184,共5页Journal of Dalian Polytechnic University

基　　金：国家自然科学基金项目(21476033);辽宁省科技厅优秀人才培育计划项目(201402610)

摘　　要：通过水热合成法在乙二醇溶液中合成分级微球BiOI可见光光催化剂。在一定范围内,提高水热反应温度,减少表面活性剂PVP投加量,BiOI在模拟可见光下的光催化活性有所提高。分级微球BiOI对罗丹明B的光催化降解结果显示,在140℃、50mL反应液中PVP投加量为0.15g、I与Bi摩尔比为1.0的条件下,制备的BiOI光催化性能最好,可见光照射45min后对罗丹明B降解率达到98%。BiOI hierarchical microspheres with visible light photocatalytic properties was synthesized by hydrothermal synthesis method in the presence of ethylene glycol（EG）. The BiOI hierarchical microspheres exhibited higher photocatalytic activity when water fluid temperature increased and the amount of surfactant additive PVP decreased within limits. The catalyst showed best photocatalytic activity for the degradation of rhodamine B when temperature was at 140℃, the amount of PVP of 0.15 g in the reactive liquid, and molar ratio of I and Bi of 1.0 under visible light. Under the conditions, the degradation rate of rhodamine B could reach to 98% after visible light irradiation for 45 min.

关 键 词：光催化剂 水热法 碘氧化铋 可见光 染料废水 

分 类 号：X703[环境科学与工程—环境工程]