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Acta Physico-Chimica Sinica  2004, Vol. 20 Issue (09): 1123-1128    DOI: 10.3866/PKU.WHXB20040913
Article     
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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Abstract  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.

Key wordsO-Pt system      5-MP      Adsorption and diffusion      Low index surfaces       Vibrational fingerprint     
Received: 26 February 2004      Published: 15 September 2004
Corresponding Authors: Wang Ze-Xin     E-mail: 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. Acta Physico-Chimica Sinica, 2004, 20(09): 1123-1128.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20040913     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2004/V20/I09/1123

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