Accessibility navigation


A stable pure hydroxyl layer on Pt{110}-(1x2)

Shavorskiy, A., Eralp, T., Gladys, M. J. and Held, G. (2009) A stable pure hydroxyl layer on Pt{110}-(1x2). Journal of Physical Chemistry, 113 (52). pp. 21755-21764. ISSN 1932-7447

Full text not archived in this repository.

To link to this article DOI: 10.1021/jp907424w

Abstract/Summary

The adsorption of water and coadsorption with oxygen on the missing-row reconstructed Pt{110}-(1x2) surface was studied by using temperature-programmed desorption (TPD) and X-ray photoelectron spectroscopy. Coadsorbed oxygen below saturation (<0.65 +/- 0.05 ML) leads to the formation of 014, which occupies sites near the ridge Pt atoms, In contrast to the more closely packed Pt{111} Surface, OH appears not to form hydrogen bonds with coadsorbed water molecules and is stable after the desorption of water tip to about 205 K (as determined by TPD). Because OH and atomic oxygen compete for adsorption sites, water dissociation is only observed for oxygen coverages below saturation. In the absence of coadsorbed oxygen, water stays intact at all temperatures and forms a strongly bound layer of 2 ML coverage oil the clean Pt{110}-(1x2) surface at temperatures between 140 and 175 K.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:11615
Uncontrolled Keywords:SCANNING-TUNNELING-MICROSCOPY, WATER FORMATION REACTION, SINGLE-CRYSTAL SURFACES, CORE-LEVEL SHIFTS, CHEMICAL-COMPOSITION, PARTIAL DISSOCIATION, METAL-SURFACES, PRESSURE GAP, PT(111), ADSORPTION

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation