中文摘要：

摘要分别采用微波加热乙二醇还原法（Mw）和浸渍还原法（IR）制备以碳化钨（wc）为载体的Pt／WC催化剂，并分别标记为：Mw-Pt／WC及IR—Pt／WC．用XRD、SEM对两种方法制备的复合材料的结构与形貌进行表征．循环伏安测试结果表明MW-Pt／WC催化剂在酸性条件下的甲醇氧化性能比IR．Pt／WC催化剂更优，表现在同一电位下Mw．Pt／WC催化剂具有更高的电流且其氧化起始电位负移约30mV，还具有更大的电化学比表面积．此外计时电流法实验结果表明Mw．Pt／WC催化剂的稳定性高于IR—tk／WC催化剂．

英文摘要：

Abstract Two types of Pt/WC catalysts were prepared by microwave-assisted （MW） polyol method and impregnation-reduction （IR） method. These catalysts were denoted as MW-Pt/WC and IR-Pt/WC respec- tively. The as prepared catalysts were characterized by using the techniques of XRD and SEM. The cyclic voltammogram （CV） of the methanol oxidation showed that MW-Pt/WC catalyst has the better performance than the IR-Pt/WC catalyst for methanol oxidation in terms of the onset potential and peak current. The chronoamperometry results demonstrated that the MW-Pt/WC yielded higher electrocatalytic activity com- paring with IR-Pt/WC catalyst.