Cu_2O/Bi_2WO_6/GR光催化剂制备及其产氢性能  

Preparation of Cu_2O/Bi_2WO_6/GR photocatalyst and its hydrogen production performance

作　　者：郑先君[1] 李翠玲[1] 范坤鹏 赵梦[1] 魏丽芳[1] 

机构地区：[1]郑州轻工业学院材料与化学工程学院,郑州450002 [2]河南矿业建设(集团)有限责任公司,郑州450000

出　　处：《桂林理工大学学报》2016年第4期813-817,共5页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(21471136)

摘　　要：采用水热法、化学沉淀法分别制备了Bi_2WO_6、Cu_2O光催化剂,并将二者与石墨烯复合制备了Cu_2O/Bi_2WO_6/GR复合光催化剂,通过XRD进行了结构表征。以丙酸为牺牲剂,考察了n(Bi_2WO_6)∶n(Cu_2O)值、石墨烯(GR)掺杂量、丙酸用量对复合光催化剂光催化产氢性能的影响。结果表明:当复合催化剂中n(Bi_2WO_6)∶n(Cu_2O)=1∶1.3、石墨烯的掺杂量为7%、丙酸用量为4 mL时产氢性能最好。该研究结果可为利用废水中有机酸光催化制取氢气提供理论指导。Bi_2WO_6 and Cu_2O photocatalysts were prepared by hydrothermal method and chemical precipitation method,respectively.The Cu_2O/Bi_2WO_6/GR photocatalyst was prepared by mixed Cu_2O/Bi_2WO_6 with GR.The Cu_2O/Bi_2WO_6/GR photocatalyst was characterized by XRD.The propionic acid was selected as sacrificial agent in the experiment.Effects of mole ratio of Cu_2O to Bi_2WO_6 in Cu_2O/Bi_2WO_6,GR doping amount and propionic acid concentration on photocatalytic H_2 production activity were studied.The experimental results showed that the optimum n（Bi_2WO_6）∶n（Cu2O） was 1∶1.3.The optimal graphene doping amount was 7%.The best hydrogen production performance for propionic acid was 4 mL in the reaction system（430 mL）.The results of this study provide a theoretical guidance for use of organic acid in wastewater to generate hydrogen gas.

关 键 词：Bi2WO6 CU2O 光催化剂 丙酸 产氢性能 

分 类 号：O643.36[理学—物理化学] TQ426.6[理学—化学]