碳纳米管负载铂催化剂的制备、结构及电化学加氢特性  

Preparation, Structure and Electrochemical Hydrogenation of Carbon Nanotubes Supported Platinum Catalysts

作　　者：和庆钢[1] 袁晓姿[1] 原鲜霞[1] 马紫峰[1] 

机构地区：[1]上海交通大学化学工程系,上海200240

出　　处：《电化学》2004年第1期51-58,共8页Journal of Electrochemistry

基　　金：国家自然科学基金(20076026;50236010);国家863计划基金(2002AA323040)资助

摘　　要：　采用浸渍沉淀法制备Pt/CNTs和Pt/C催化剂,并对其结构及电催化性能进行比较,表征.实验表明,以碳纳米管作催化剂载体可使催化剂的负载量,载体上铂的分散度以及其活性中心大大提高.与Pt/C(JohnsonMatthey)催化剂相比,Pt/CNTs的电化学性能表现出更大的活性.碳纳米管作为阴极材料在质子交换膜燃料电池加氢反应器合成化学品中的作用十分明显.In this paper, Pt/CNTs catalyst was prepared and its electrocatalytic property was studied by obtaining cycling voltammetry curves (C-V) and Tafel curves. In addition, the XRD,XPS and TEM tests were carried out to determine the structure and composition of the catalysts. It can be found that the platinum loading has been increased significantly using a carbon nanotubes support. Dispersion of Platinum was better and gave more active sites. The electrochemical characteristic of Pt/CNTs was also more desirable than that of Pt/C catalyst(Johnson Matthey). In conclusion, carbon nanotubes can played a conspicuous role in 'electrogenerative' processes of PEMFC hydrogenation reactor.

关 键 词：碳纳米管负载铂催化剂 制备 结构 电化学加氢特性 浸渍沉淀法 丙烯醇 

分 类 号：TB383[一般工业技术—材料科学与工程]