A synchrotron radiation study of NO, CO and hydrogen adsorption on Rh(110)

K.C. Prince, A. Santoni, A. Morgante, G. Comelli

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Abstract

Surface core level shifts of the Rh(110) surface induced by CO and hydrogen are reported. The shift induced by CO is found to be much larger than that predicted by a Born-Haber cycle; this discrepancy is explained in terms of an alloying effect not included in the cycle. The valence level spectra of CO and NO at the Rh Cooper minimum have been measured and the satellite structure determined. NO displays multiplet structure which causes peak broadening and splitting, and is assigned to paramagnetism in the ground state. The NO 4σ single-triplet splitting is found to be 1.9 ± 0.3 eV. The core levels of NO are anomalously broad, an effect which is assigned to unresolved multiplet splitting, but the C ls level of CO is shown to be narrower than reported in the literature. © 1994.
Original languageEnglish
Pages (from-to)397 - 406
Number of pages10
JournalSurface Science
Volume317
Issue number3
DOIs
Publication statusPublished - 1 Oct 1994
Externally publishedYes

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All Science Journal Classification (ASJC) codes

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

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