Identification and stability of CH3, CH2, and CH species on Co and Ni surfaces, a Pes investigation

Friedrich Steinbach, Janos Kiss, Rudiger Krall

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

CH3, CH2, CH, and C, adsorbed on polycrystalline Co or Ni, are idendified and characterized by XPS and UPS with respect to peak positions and temperature regimes of existence. The species are generated by adsorption and subsequent dissociation of CH3Cl or CH2Cl2. Due to the early dissociation of the CC1 bond it is possible to study the CHn species and their stepwise dehydrogenation without interference. Constant and temperature independent peak positions over ranges of at least 50 K on Co and of about 40 K on Ni indicate that the peak maxima used for identification are generated by the respective single species and not by superimposition of two or more peaks of species drifting through the dehydrogenation.

Original languageEnglish
Pages (from-to)401-412
Number of pages12
JournalSurface Science
Volume157
Issue number2-3
DOIs
Publication statusPublished - Jul 2 1985

ASJC Scopus subject areas

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

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