催化学报

催化学报 ›› 2014, Vol. 35 ›› Issue (2): 255-259.DOI: 10.1016/S1872-2067(12)60747-5

• 研究论文 • 上一篇    下一篇

Low temperature adsorption of CO on modified, vicinal Cu(100) surfaces：A comparative study

Przemys?aw Jan Godowskia, Jens Onsgaardb   

  1. a Institute of Experimental Physics, University of Wroc?aw, 50-204 Wroc?aw, Poland;
    b Department of Physics and Nanotechnology, University of Aalborg, DK-9220 Aalborg East, Denmark
  • 收稿日期:2013-08-26 修回日期:2013-11-12 出版日期:2014-01-16 发布日期:2014-01-17
  • 通讯作者: Przemysław Jan Godowski

Low temperature adsorption of CO on modified, vicinal Cu(100) surfaces：A comparative study

Przemys?aw Jan Godowskia, Jens Onsgaardb   

  1. a Institute of Experimental Physics, University of Wroc?aw, 50-204 Wroc?aw, Poland;
    b Department of Physics and Nanotechnology, University of Aalborg, DK-9220 Aalborg East, Denmark
  • Received:2013-08-26 Revised:2013-11-12 Online:2014-01-16 Published:2014-01-17
  • Contact: Przemysław Jan Godowski

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摘要：

The experimental results of the adsorption of CO on clean and potassium-modified vicinal Cu(100) surfaces at 125 K were present. We studied three surfaces under identical experimental conditions. At 125 K, potassium forms disordered structure on vicinals and CO adsorbs only on sites not occupied by K. It was found that a small percent of the CO molecules dissociate on the stepped interfaces. The influence of steps dominates over pre-adsorbed alkali atoms at 125 K.

关键词: Carbon monoxide, Copper(100) vicinal surface, Potassium modified surface

Abstract:

The experimental results of the adsorption of CO on clean and potassium-modified vicinal Cu(100) surfaces at 125 K were present. We studied three surfaces under identical experimental conditions. At 125 K, potassium forms disordered structure on vicinals and CO adsorbs only on sites not occupied by K. It was found that a small percent of the CO molecules dissociate on the stepped interfaces. The influence of steps dominates over pre-adsorbed alkali atoms at 125 K.

Key words: Carbon monoxide, Copper(100) vicinal surface, Potassium modified surface