Study of CO diffusion on stepped Pt(111) surface by scanning tunneling microscopy
Publication in refereed journal

香港中文大學研究人員

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其它資訊
摘要We have used a time-dependent tunneling current mode based on scanning tunneling microscopy/spectroscopy (STM/STS) to study the tracer diffusion of CO molecules along steps and on terraces of Pt(1 1 1). The results show that the hopping rate of CO molecules along steps is about 10 times faster than that on terraces in the measured temperature range. The diffusion activation energies are 5.1 kcal/mol and 3.8 kcal/mol on terraces and along steps, respectively. The lower activation energy and faster hopping rate for CO molecules diffusing along steps provide evidence that steps provide fast diffusion channels for CO molecules on stepped Pt(1 1 1) surfaces. (C) 2009 Elsevier B.V. All rights reserved.
著者Wang KD, Ming FF, Huang Q, Zhang XQ, Xiao XD
期刊名稱Surface Science
詳細描述To ORKTS: http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TVX-4XSTD0D-4-M&_cdi=5546&_user=5654&_pii=S003960280900750X&_orig=search&_coverDat
出版年份2010
月份2
日期15
卷號604
期次3-4
出版社ELSEVIER SCIENCE BV
頁次322 - 326
國際標準期刊號0039-6028
電子國際標準期刊號1879-2758
語言英式英語
關鍵詞Platinum; Scanning tunneling microscopy; Stepped surface; Surface diffusion
Web of Science 學科類別Chemistry; Chemistry, Physical; CHEMISTRY, PHYSICAL; Physics; Physics, Condensed Matter; PHYSICS, CONDENSED MATTER

上次更新時間 2021-25-01 於 23:18