坡缕石负载ZnO/SnO_2光催化剂的制备及光催化性能研究  

The preparation and photocatalytic properties of palygorskite supported ZnO/SnO_2

作　　者：成莉燕[1] 杨武[1] 薛再兰[1] 高锦章[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2008年第4期86-90,共5页Journal of Northwest Normal University(Natural Science)

基　　金：甘肃省自然科学基金资助项目(3ZS041-A25-028);西北师范大学科技创新工程资助项目(NWNU-KJCXGC-01)

摘　　要：采用共沉淀法制备了负载型复合光催化剂ZnO/SnO2/PG,运用FT-IR,XRD,TG,UV-Vis等多种表征手段对该光催化剂的结构、热稳定性及光谱性质进行了分析,同时利用太阳光对水溶液中亚甲基兰的降解实验对催化剂的光催化性能进行了评价.结果表明,坡缕石负载的复合光催化剂有很好的热稳定性和较高的光催化活性,120 min内对亚甲基兰去除率达到95%以上,降解反应符合一级反应动力学特性.Palygorskite supported ZnO/SnO2 photocatalyst is prepared with a coprecipitation method, and it is characterized by FT-IR, XRD, TG-DTG, UV-Vis etc. Photocatalytic activity is also evaluated by employing degradation of methylene blue in aqueous solution under solar light as a model reaction. It is found that the photocatalyst have a high thermal stability and photocatalytic activity to the degradation reaction of methylene blue in aqueous solution and within 120 min removal rate of the dye exceed 95%. The degradation reaction obeys first-order kinetic reaction equation,

关 键 词：共沉淀 坡缕石 负载型光催化剂 亚甲基兰 

分 类 号：O643.36[理学—物理化学]