溶剂热法制备金属有机框架HKUST-1及其析氢性能  

Facile solvothermal synthesis of HKUST-1 as electrocatalyst for hydrogen evolution reaction

作　　者：聂明[1] 陆顺[1] 李庆[1] 刘晓卫[1] 杜胜娟 

机构地区：[1]发光与实时分析教育部重点实验室,西南大学材料与能源学部,重庆400715

出　　处：《中国科学：化学》2016年第4期357-364,共8页SCIENTIA SINICA Chimica

基　　金：重庆市自然科学基金重点资助项目(编号:cstc2012jj B5011);教育部基本科研业务费重点项目(编号:XDJK2013B018)

摘　　要：金属有机框架(MOFs)类材料在电化学析氢反应中应用较少.本文采用溶剂热法,制备了蓝紫色粉末状物质HKUST-1,并使用有机溶剂进行活化.将其负载在电极上进行线性扫描伏安曲线(LSV)、循环伏安曲线(CV)等电化学测试.结果表明,相对于玻碳电极(GC),HKUST-1催化层电极的析氢电位正移达532 mV,活化后HKUST-1的析氢电位正移达到658 mV.对样品的结构与形貌的物理表征结果表明,HKUST-1具有良好的热稳定性和较大的比表面积;经全氟磺酸型聚合物(Nafion)溶液处理后,在提高HKUST-1的导电性的同时,也增强了其电化学稳定性.Metal-organic frameworks（MOFs） have few application in electrochemical hydrogen evolution. The simplest MOF as HKUST-1 was prepared through solvothermal method using Cu（OAc）_2H_2O and H_3BTC in each solution, then activated via organic solutions, and it was used in working electrode for electrochemical test, as catholic polarization linear sweep voltammetry（LSV） and Tafel polarization curves. Electrochemical test results exhibit that compared with glassy carbon（GC） electrode, the hydrogen evolution potential of HKUST-1 catalytic layer of the electrode positive shift of 532 mV, the hydrogen evolution potential of activated one positive shift reaches 658 mV. Then the structure and morphology of the samples were physical characterization results indicate that： HKUST-1 has good stability and large specific surface area, the activation treatment can improve HKUST-1 ratio of surface area. This process improves its conductivity and enhances its electrochemical stability after HKUST-1 modified with Nafion solution.

关 键 词：金属有机框架 析氢反应 水热法 活化 

分 类 号：O627[理学—有机化学] TQ116.2[理学—化学]