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Adsorption states of NO on the Pt(111) step surface

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タイトル: Adsorption states of NO on the Pt(111) step surface
著者: Tsukahara, N. 著作を一覧する
Mukai, K. 著作を一覧する
Yamashita, Y. 著作を一覧する
Yoshinobu, J. 著作を一覧する
Aizawa, H. 著作を一覧する
キーワード: Platinum
Steps
Nitric monoxide
Adsorption
Infrared reflection absorption spectroscopy
Scanning tunneling microscopy
Density functional theory calculations
発行日: 2006年 9月 1日
出版者: Elsevier B.V.
誌名: Surface Science
巻: 600
号: 17
開始ページ: 3477
終了ページ: 3483
出版社 DOI: 10.1016/j.susc.2006.06.040
抄録: Using infrared reflection absorption spectroscopy (IRAS) and scanning tunneling microscopy (STM), we investigated the adsorption states of NO on the Pt(9 9 7) step surface. At 90 K, we observe three N–O stretching modes at 1490 cm−1, 1631 cm−1 and 1700 cm−1 at 0.2 ML. The 1490 cm−1 and 1700 cm−1 peaks are assigned to NO molecules at fcc-hollow and on-top sites of the terrace, respectively. The 1631 cm−1 peak is assigned to the step NO species. In the present STM results, we observed that NO molecules were adsorbed at the bridge sites of the step as well as fcc-hollow and on-top sites of the terrace. To help with our assignments, density functional theory calculations were also performed. The calculated results indicate that a bridge site of the step is the most stable adsorption site for NO, and its stretching frequency is 1607 cm−1. The interactions between NO species at different sites on Pt(9 9 7) are also discussed.
Relation (URI): http://www.sciencedirect.com/science/journal/00396028
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/15877
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 相澤 秀昭

 

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