SnS_2/BiOBr复合光催化剂的制备及其光催化性能研究  

Preparation and property of SnS_2/BiOBr composite photocatalyst

作　　者：丁世环[1] 徐聪聪 鹿媛铮 Ding Shihuan;Xu Congcong;Lu Yuanzheng(Department of Petroleum Engineering,Chongqing Energy College,Chongqing 402260;College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 401331)

机构地区：[1]重庆能源职业学院石油天然气工程系,重庆402260 [2]重庆大学化学化工学院,重庆401331

出　　处：《化工新型材料》2018年第9期205-208,共4页New Chemical Materials

基　　金：重庆市自然科学进展重点项目(CSTC2015jcyjBX0015)

摘　　要：结合水热法和沉淀法成功制备了核壳结构的SnS_2/BiOBr复合光催化剂。通过X射线衍射仪、红外光谱仪、扫描电镜、能谱和荧光光谱等手段对样品的物相组成、形貌和光吸收性质等进行表征,并在可见光下催化降解甲基橙作为探针来评价所合成样品的光催化活性。结果表明:SnS_2能有效提高BiOBr光催化性能,SnS_2/BiOBr在可见光下光照100min降解率达到77%,活性优于BiOBr或SnS_2。此外,SnS_2/BiOBr复合光催化剂稳定性高,重复使用性能良好。SnS2/BiOBr composite photocatalysts were successfully synthesized by coupling hydrothermal method with precipitation method.XRD,FT-IR,SEM,EDS and PL were applied to investigate the structure,morphology and optical absorption properties of samples.The photocatalytic degradation of methyl orange was selected as a probe to evaluate the photocatalytic activity of samples under visible light.The results confirmed that SnS2 improved the photacatalytic performance of BiOBr effectively.The degradation rate of methyl orange was 77%in 100 minutes with SnS2/BiOBr under visible light irradiation,which was better than that with pure BiOBr or SnS2.Furthermore,SnS2/BiOBr exhibited high stability and good repeatability.

关 键 词：SnS2/BiOBr复合光催化剂 可见光 p-n异质结 甲基橙 

分 类 号：O643.36[理学—物理化学]