Precursor adsorption of oxygen on Ni(111) and the activation energy for chemisorption

Mansour Shayegan, J. M. Cavallo, R. E. Glover, Robert L. Park

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

Measurements of electron transmission spectra and work function φ of a Ni(111) surface held at T=5.5 K during exposure to O2 provide direct evidence for a precursor adsorption preceding dissociative chemisorption. The form of the electron transmission spectra indicates that the precursor adsorption involves oxygen molecules. Subsequent warming of the oxygen-covered surface leads to the chemisorption state. An analysis of the kinetics of the increase in φ that accompanies this transition gives an activation energy of ∼ 13 meV for the reaction.

Original languageEnglish (US)
Pages (from-to)1578-1581
Number of pages4
JournalPhysical Review Letters
Volume53
Issue number16
DOIs
StatePublished - Jan 1 1984
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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