八面体γ-Bi_2MoO_6的表面活性剂辅助水热合成及其光催化性质(英文)  

Surfactant-assisted hydrothermal synthesis and photocatalytic acitivity of octahedral γ-Bi_2MoO_6

作　　者：宋继梅[1] 胡海琴[1] 梅雪峰[1] 师亚利[1] 任明松[1] 胡刚[1] 

机构地区：[1]安徽大学化学化工学院,功能无机材料化学安徽省重点实验室,安徽合肥230039

出　　处：《安徽大学学报（自然科学版）》2013年第1期73-79,共7页Journal of Anhui University(Natural Science Edition)

基　　金：Supported by the National Natural Science Foundation of China(21171002);the Natural Science Foundation of Anhui Province(11040606M55);the Foundation of Education Committee of Anhui Province(KJ2010A015);the Assistance from the Fifteenth Project of Excellent Talent of Anhui Province,the"211"Project of Anhui University

摘　　要：在有无表面活性剂CTAB辅助下,利用简单的水热法合成八面体和片状γ-Bi2MoO6.通过XRD、SEM、PL等对合成产物进行表征,由紫外可见漫反射(UV-vis)光谱发现产物在可见光域具有明显的光学吸收.以罗丹明B为目标降解产物,研究了γ-Bi2MoO6的光催化活性.结果显示:八面体γ-Bi2MoO6在太阳光下表现出高的光催化活性,罗丹明B的降解率达到95.7%,其主要归因于样品具有较低的光生电子-空穴的复合率.该方法为合成具有潜在光学应用的纳米多组分金属氧化物提供了一个温和、低廉的路线.The octahedral and flake-like γ-bismuth molybdate（γ-Bi 2 MoO 6） have been successfully fabricated via a simple hydrothermal method with and without surfactant CTAB,respectively.The products were characterized by XRD,SEM and PL.UV-vis was employed to estimate the band gap energy of γ-Bi 2 MoO 6,which exhibited significant absorption in the visible region.Photocatalytic activity of γ-Bi 2 MoO 6 was examined by monitoring the degradation of Rhodamine B in an aqueous solution under solar light radiation.The octahedral Bi 2 MoO 6 showed superior photocatalytic performance,and degradation ratio reached 95.7%.This mainly attributed to the lower recombination of photogenerated electrons and holes.The present method provides a facile and low-cost route for the synthesis of nanostructures of multicomponent metal oxides with potential optical applications.

关 键 词：钼酸铋 光催化作用 罗丹明B 

分 类 号：O643[理学—物理化学]