中文摘要：

以TiO2为载体制备Pt/WC/TiO2三元复合催化剂,XRD、SEM和TEM等表征催化剂样品的形貌和结构特征,循环伏安法测定三元复合催化剂在酸性条件下对甲醇氧化的电催化性能,并与二元复合催化剂Pt/TiO2和Pt/WC的电催化性能作比较.结果表明,三元复合催化剂具有更好的催化活性.进一步研究了二氧化钛晶相对Pt/WC/TiO2催化剂电催化活性的影响.

英文摘要：

The TiO2 was used as support for preparation of Pt/WC/TiO2 composite catalysts.The composites were characterized by XRD,SEM and TEM methods.The electrocatalytical activity of Pt/WC/TiO2 composites for methanol oxidation was investigated by cyclic voltammetry.The Pt/WC/TiO2 composite exhibited higher activity compared with that of Pt/TiO2 and Pt/WC composite catalysts.The effects of crystal phases of TiO2 on the electrocatalytical activity of Pt/WC/TiO2 composite catalyst are discussed.