可见光增强g-C_3N_4/Co_3O_4胶体催化剂的催化产氢性能  

Hydrogen production over g-C_3N_4/Co_3O_4 colloidal catalyst enhanced by visible light

作　　者：张新东 冯晋阳[1] 范丽君 王宇晶[1] 柴守宁[2] Zhang Xindong;Feng Jinyang;Fan Lijun;Wang Yujing;Chai Shouning(School of Materials and Chemical Engineering,Xi＇an Technological University,Xi＇an 710021,Shaanxi,China;College of Science,Xi＇an University of Architecture and Technology,Xi＇an 710055,Shaanxi,China)

机构地区：[1]西安工业大学材料与化工学院,陕西西安710021 [2]西安建筑科技大学理学院,陕西西安710055

出　　处：《工业催化》2018年第8期48-51,共4页Industrial Catalysis

基　　金：陕西省教育厅专项科研计划项目(15JK1383);金川公司-西安建筑科技大学预研基金项目(YY1507)

摘　　要：通过水热法制备了具有可见光增产氢高性能的g-C_3N_4/Co_3O_4胶体催化剂,采用XRD、TEM、SEM和EDS等分析样品的组成和形貌结构。催化产氢结果表明,光照条件下g-C_3N_4/Co_3O_4胶体催化剂具有极高的催化产氢活性,TOF值高达58.2 min^(-1),通过拟合温度动力学曲线,得到了催化反应的活化能为15.73 kJ·mol^(-1)。对样品进行UV-vis和PL测试发现,g-C_3N_4/Co_3O_4胶体催化剂具有极高的光能利用率和电子-空穴分离率,并进一步阐述了光能促进催化产氢的作用机理。g-C3N4/Co3O4 colloidal catalyst with enhanced hydrogen production by visible light was prepared via hydrothermal-reduction process and characterized by XRD,TEM,SEM and EDS to investigate the component and morphology of catalyst. The results showed that g-C3N4/Co3O4 colloidal catalyst had premium catalytic activity for hydrogen production under visible light irradiation,and its TOF value was as high as 58. 2 min^（-1）. Activation energy of the catalyst was 15. 73 kJ·mol^（-1） obtained by fitting temperature and kinetics curve. UV-vis and PL tests found that the composite catalyst had high light utilization rate and electron hole separation rate,which further illuminated mechanism of light improving catalytic activity.

关 键 词：催化化学 光增强 催化产氢 g-C3N4/Co3O4胶体催化剂 

分 类 号：TK91[动力工程及工程热物理] TQ426.94[化学工程]