Cu_2O/Bi_2MoO_6耦合系统增强光催化活性研究(英)  

Enhanced visible-light-induced photocatalytic activity:a coupled system of Cu_2O/Bi_2MoO_6

作　　者：宋继梅[1] 鲁韵[1] 胡海琴[1] 杨捷[1] 

机构地区：[1]安徽大学化学化工学院,安徽合肥230601

出　　处：《安徽大学学报（自然科学版）》2017年第5期73-82,共10页Journal of Anhui University(Natural Science Edition)

基　　金：Supported by the Chinese National Science Foundation(21171002);the Natural Science Foundation of Anhui Province(11040606M55)and the Foundation of Education Committee of Anhui Province(KJ2010A015)

摘　　要：采用乙二醇为溶剂,成功合成了耦合系统Cu2O/Bi2MoO6,分别采用X射线衍射(XRD)、拉曼光谱(Raman)、X射线光电子能谱分析(XPS)和透射电子显微镜(TEM)进行表征.样品的光催化活性通过在可见光下降解结晶紫来获得.结果表明,当Cu与Mo摩尔比为0.08,Cu2O/Bi2MoO6展示出最高的光催化性能,仅在100min结晶紫的降解率达到95.6%.同时,研究了耦合系统中Cu2O的量对其光催化活性的影响,并提出了合理的反应机制.A coupled system of Cu2O/Bi2MoO6 with enhanced visible-light photocatalytic activity was successfully synthesized using ethylene glycol （EG） as a solvent. The as- synthesized samples were characterized via X-ray power diffraction （XRD）, Raman spectrum, transmission electron microscopy （TEM）, X-ray photoelectron spectroscopy （XPS） and UV-Vis diffuse reflection spectrum （DRS） in detail. The photocatalytic activities of the synthesized samples were evaluated by monitoring the degradation of crystal violet solution under visible light. As a result, the obtained Cu20/Bi2MoO6 with the mole ratio of Cu/Mo 0.08 exhibited the excellent visible-light-driven photocatalytie performance, and the degradation ratio of crystal violet could reach 95.6% within 100 min. The effects of the amount of cuprous oxide on the catalytic activity of Cu20/Bi2 MoO6 were investigated. The possible reaction mechanism of this system was proposed.

关 键 词：氧化亚铜 钼酸铋 光催化活性 结晶紫 

分 类 号：O614[理学—无机化学] O643.3[理学—化学]