Carbonate formation and decomposition on atomic oxygen precovered Au(111)

Rotimi A. Ojifinni, Jinlong Gong, Nathan S. Froemming, David W. Flaherty, Ming Pan, Graeme Henkelman, C. Buddie Mullins

Research output: Contribution to journalArticlepeer-review

Abstract

Experimental results supported by density functional theory calculations show carbonate formation and reaction on atomic oxygen precovered Au(111). Oxygen mixing is observed in temperature-programmed desorption measurements when a Au(111) precovered with 16O is exposed to isotopically labeled CO2 (C18O2). The presence of 16O18O is attributed to surface carbonate formation and decomposition at surface temperatures ranging from 77-400 K and initial oxygen coverages ranging from 0.18-2.1 ML. A reaction probability on the order of 10-4 and an activation energy of -0.15 ± 0.08 eV are estimated for this reaction.

Original languageEnglish (US)
Pages (from-to)11250-11251
Number of pages2
JournalJournal of the American Chemical Society
Volume130
Issue number34
DOIs
StatePublished - Aug 27 2008
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry

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