Carbon monoxide chemisorption on Cu covered Ni (111) surfaces

X. H. Feng, M. R. Yu, S. Yang, G. Meigs, Eric Garfunkel

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The adsorption of carbon monoxide on copper covered Ni ( 111 ) surfaces has been studied by high resolution electron energy loss spectroscopy (HREELS). CO is used to titrate the various adsorption sites present, yielding information about the structure and composition of the two metal species at the surface. The results show that CO adsorbs at locations which resemble the top and bridge sites of pure Cu ( 111 ) and Ni ( 111 ) surfaces, and on a new mixed Cu-Ni bridge site. For a Cu coverage greater than one monolayer, the CO HREEL spectra are very similar to those observed on the clean Cu ( 111 ) surface. For Cu coverages less than one monolayer, and deposition at 80 K, small Cu clusters and Cu islands are observed. For submonolayer Cu deposition at temperatures > 300 K, a mixed Cu-Ni layer can be formed. The HREELS results for the mixed surface with low Ni concentration show that CO adsorbs on the Ni top sites first (at T

Original languageEnglish
Pages (from-to)7516-7523
Number of pages8
JournalJournal of Chemical Physics
Volume90
Issue number12
Publication statusPublished - 1989

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Carbon Monoxide
Chemisorption
chemisorption
carbon monoxide
Electron energy loss spectroscopy
Monolayers
energy dissipation
electron energy
Adsorption
adsorption
high resolution
spectroscopy
Copper
low concentrations
Metals
copper
Chemical analysis
metals
Temperature
temperature

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Feng, X. H., Yu, M. R., Yang, S., Meigs, G., & Garfunkel, E. (1989). Carbon monoxide chemisorption on Cu covered Ni (111) surfaces. Journal of Chemical Physics, 90(12), 7516-7523.

Carbon monoxide chemisorption on Cu covered Ni (111) surfaces. / Feng, X. H.; Yu, M. R.; Yang, S.; Meigs, G.; Garfunkel, Eric.

In: Journal of Chemical Physics, Vol. 90, No. 12, 1989, p. 7516-7523.

Research output: Contribution to journalArticle

Feng, XH, Yu, MR, Yang, S, Meigs, G & Garfunkel, E 1989, 'Carbon monoxide chemisorption on Cu covered Ni (111) surfaces', Journal of Chemical Physics, vol. 90, no. 12, pp. 7516-7523.
Feng, X. H. ; Yu, M. R. ; Yang, S. ; Meigs, G. ; Garfunkel, Eric. / Carbon monoxide chemisorption on Cu covered Ni (111) surfaces. In: Journal of Chemical Physics. 1989 ; Vol. 90, No. 12. pp. 7516-7523.
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