Water Activated by Atomic Oxygen on Au(111) to Oxidize CO at Low Temperatures

• Published in: Journal of the American Chemical Society Vol. 128; no. 19; pp. 6282 - 6283
• Main Authors: Kim, Tae S, Gong, Jinlong, Ojifinni, Rotimi A, White, J. M, Mullins, C. Buddie
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 17.05.2006
• Subjects: Atomic and molecular collision processes and interactions; Atomic and molecular physics; Chemical reactions, energy disposal, and angular distribution, as studied by atomic and molecular beams; Exact sciences and technology; Physics; Scattering of atoms, molecules and ions; Gold; Catalytic reaction; Catalysts; Reaction path; Mass spectroscopy; Thermally stimulated desorption; Experimental study; Aqueous solutions; Surface reactions; Transition elements; Oxidative degradation; Molecular beams; Carbon monoxide; Crystal faces; Low temperature
• ISSN: 0002-7863; 1520-5126
• DOI: 10.1021/ja058263m

The Au(111) surface was populated with atomic oxygen [16O] followed by oxygen-labeled water [H2 18O] at surface temperatures as low as 77 K. When a CO beam was impinged on this surface, both [C16O16O] and [C16O18O] were produced. The results strongly suggest the direct involvement and promoting role of water in CO oxidation on oxygen covered Au(111) at low temperatures.