Chemisorption of CO on Sm overlayers and SmRu alloy films on Ru(001)

G. Ranga Rao, H. Kondoh, H. Nozoye

研究成果: Article

12 引用 (Scopus)

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The chemisorption of CO on Sm-covered Ru(001) and SmRu surface alloy has been investigated by XPS and TPD techniques. Sm-induced CO dissociation occurs on the Ru(001) surface. Sm is partly oxidized and agglomerated due to the dissociation of CO. Two molecular CO states are found: one is a chemisorbed CO on Ru atoms and the other is a weakly adsorbed CO associated with Sm2Ox. The latter is characterized by a new intense feature at 538.5 eV in the O 1s spectrum. The top layer of the SmRu surface alloy on Ru(001) is decomposed due to the selective oxidation of Sm by oxygen from CO. The CO TPD from the SmRu surface alloy film shows an additional feature at 345 K that is attributed to CO molecules from RuSm2Ox interfacial sites.

元の言語English
ページ(範囲)287-294
ページ数8
ジャーナルSurface Science
336
発行部数3
DOI
出版物ステータスPublished - 1995 8 10
外部発表Yes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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