中文摘要：

采用磁控溅射技术制备了Pt-Cu双金属催化剂,并对其甲醇催化活性进行了评价。通过X射线衍射、原子力显微镜和X射线光电子谱对催化剂薄膜的组织结构、表面形貌和结合能进行了表征。通过控制Pt、Cu靶材的溅射功率来控制Pt-Cu双金属催化剂中Pt/Cu比值。结果表明Pt-Cu双金属催化剂中有Pt-Cu合金的形成,随Pt/Cu比值的增加,合金催化剂的甲醇催化性能提高;当Pt-Cu双金属催化剂中Pt/Cu比最高时,催化剂具有较好的甲醇催化性能（67.5%）,其催化性能的改变可能是电子配位体效应和Pt活性中心共同作用的结果。

英文摘要：

Pt-Cu bimetallic catalysts were prepared by magnetron sputtering and its catalytic performance toward methanol oxidation was evaluated. The microstructure, surface morphologies and binding energy of the samples were studied by X-ray diffraction（XRD）, atomic force microscopy（AFM） and X-ray photoelectron spectroscopy（XPS）. The ratio of Pt/Cu in bimetallic catalysts was controlled by manipulating sputter power during sputter-deposition process. The results show that, the Pt-Cu alloy has formed in Pt-Cu bimetallic catalysts. The metayl alcolool catalytic properties of the alloy catalyst reduce with the increase of Pt/Cu ratio; Pt-Cu bimetallic catalyst with highest Pt/Cu ratio has good metayl alcolool catalytic performance（67.5%）. There are two critical factors which can contribute to the modification of catalytic performance, which is ligand effect and Pt active site.