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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2004,Vol.20>> Issue(09)>> 1123-1128     doi: 10.3866/PKU.WHXB20040913         中文摘要
Adsorption and Vibration of Oxygen Atom on Low Index Pt Planes
Diao Zhao-Yu;Dong Chen-Chu;Wang Ze-Xin
Department of Chemistry, Shandong Normal University, Jinan 250014
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The 5-parameter morse potential (5-MP) of interaction between an adatom and metal surface cluster is put forward and performed on O-Pt low index surface systems. The characteristics of critical points are obtained. The theoretical results show that oxygen atom can only adsorb at the four-fold hollow site on Pt (100) ;O adsorbs at the three-fold hollow site and the long-bridge site on the (110) missing-row reconstruction surface. We ulteriorly analyze heredity and variation of vibrational fingerprint properties of three-fold state on Pt(111). We confirm that the experimental data of 59.49 meV and 40.90 meV in the electron energy loss spectrum on the (110) missing-row reconstruction surface belong to vertical vibrations of adsorption states, which are produced by oxygen atom on the three-fold hollow site and long-bridge site, respectively.

Keywords: O-Pt system   5-MP   Adsorption and diffusion   Low index surfaces    Vibrational fingerprint  
Received: 2004-02-26 Accepted: 2004-05-10 Publication Date (Web): 2004-09-15
Corresponding Authors: Wang Ze-Xin Email: wangzexin@sdnu.edu.cn


Cite this article: Diao Zhao-Yu;Dong Chen-Chu;Wang Ze-Xin. Adsorption and Vibration of Oxygen Atom on Low Index Pt Planes[J]. Acta Phys. -Chim. Sin., 2004,20 (09): 1123-1128.    doi: 10.3866/PKU.WHXB20040913
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