g-C_(3)N_(4)改性光催化剂的催化性能研究  

Study on the Visible Photocatalytic Performance of Bi-doped g-C_(3)N_(4)Modified Photocatalyst

作　　者：陈锦妹 尤炜弘 肖秋熔 李艺林 林志奇 梁奕聪 廖志成 CHEN Jinmei;YOU Weihong;XIAO Qiurong;LI Yilin;LIN Zhiqi;LIANG YiCong;LIAO Zhicheng(Faculty of Civil and Transportation Engineering,Guangdong University of Technology,Guangdong Guangzhou 510006;St.Anne's-Belfield School,charlottesville,VA,22903 United States)

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510006 [2]圣安妮贝尔菲尔德中学,美国弗吉尼亚州22903

出　　处：《生物化工》2021年第4期62-65,共4页Biological Chemical Engineering

基　　金：国家级大学生创新训练项目(xj202011845283);省级大学生创新训练项目(xj202011845271);省级大学生创新训练项目(xj202011845277)。

摘　　要：采用溶剂热法制备新型铋掺杂g-C_(3)N_(4)改性光催化剂,利用场发射扫描电子显微镜、紫外可见近红外光谱UV-vis与光致发光光谱PL等对光催化剂形貌与催化性能进行实际表征对其表面特性进行表征,研究其可见光催化活性。将新型光催化剂用于染料废水(以罗丹明B为例)的高级氧化处理,研究其可见光催化降解效果。结果表明,在Bi金属等离子体效应、BiOBr表面氧空缺与异质结的协同作用下,新型光催化剂禁带宽度较低(2.43 eV),可见光吸收能力和光生载流子的分离效率高,对罗丹明B的可见光降解效率高达99.8%,是一种快速高效的可见光催化剂。for A novel homemade bismuth synthesized by solvothermal method,doped g-C_(3)N_(4) modified photocatalyst,its surface characteristics were characterized by advanced detection equipments,such as SEM,UVvis,PL and so on,its visible photocatalytic activity was studied.The novel photocatalyst was employed in the advanced oxidation treatment of dye wastewater to take rhodamine B as an example,and its visible photocatalytic degradation effect was explored.Results showed that the synergistic effect between Bi metal plasma effect,surface oxygen vacancy of BiOBr and heterojunction led to a narrow band gap(2.43 eV),and greatly promotes visible-light absorption capacity and the separation rate of the photoinduced electron-hole pairs,thereby achieving efficient degradation of RhB.The visible photocatalytic degradation efficiency of the novel photocatalyst on rhodamine B is as high as 100%.

关 键 词：铋掺杂g-C_(3)N_(4)改性光催化剂 异质结 可见光催化活性 催化降解效率 

分 类 号：TQ426.81[化学工程]