Oxygen dissociation on Ag(110): A ruin game

D. A. Butler, J. B. Sanders, A. Raukema, A. W. Kleyn, J. W.M. Frenken*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)

Abstract

The previously reported dependence of the dissociative sticking probability of oxygen on the Ag(110) surface has been modeled as a random walk between selective adsorption and desorption sites on the surface. Chemisorbed oxygen molecules are allowed to move on an anisotropic surface between boundaries representing the Ag-O added rows and surface steps. Molecules that encounter the added rows are forced to desorb from the surface, while molecules reaching a step react, forming Ag-O units, and become permanently bound. Although simple, the model describes the form and magnitude of the sticking probability as a function of the surface atomic oxygen coverage with only limited and physically reasonable fitting parameters.

Original languageEnglish
Pages (from-to)141-149
Number of pages9
JournalSurface Science
Volume375
Issue number2-3
DOIs
Publication statusPublished - 1-Apr-1997
Externally publishedYes

Keywords

  • Chemisorption
  • Low index single crystal surfaces
  • Oxidation
  • Oxygen
  • Semi-empirical models and model calculations
  • Silver
  • Surface diffusion
  • Surface relaxation and reconstruction

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