Park Kyung-Won, Sung Yung-Eun
Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, USA.
J Phys Chem B. 2005 Jul 21;109(28):13585-9. doi: 10.1021/jp047430m.
Using Pt on Ru thin-film electrodes with various (electro)chemical states designed by the sputtering method, the effect of Ru states on the catalytic activity of Pt was investigated. The chemical and electrochemical properties of Pt/Ru thin-film samples were confirmed by X-ray photoelectron spectroscopy (XPS) and cyclic voltammetry. In addition, Pt nanoparticles on Ru metal or oxide for an actual fuel cell system showed an effect of Ru states on the catalytic activity of Pt in methanol electrooxidation. Finally, it was concluded that such an enhancement of methanol electrooxidation on the Pt is responsible for Ru metallic and/or oxidation sites compared to pure Pt without any Ru state.
通过溅射法制备具有各种（电）化学状态的钌薄膜电极上的铂，研究了钌状态对铂催化活性的影响。采用X射线光电子能谱（XPS）和循环伏安法对铂/钌薄膜样品的化学和电化学性质进行了表征。此外，实际燃料电池系统中钌金属或氧化物上的铂纳米颗粒在甲醇电氧化中表现出钌状态对铂催化活性的影响。最后得出结论，与没有任何钌状态的纯铂相比，铂上甲醇电氧化的这种增强归因于钌金属和/或氧化位点。
