Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 12, Issue 33, Pages 9801-9810Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c003368e
Keywords
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Funding
- Landesstiftung Baden-Wurttemberg via the Network 'Functional Nanostructures'
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The coadsorption of CO and hydrogen on a structurally well-defined Pt35Ru65/Ru(0001) monolayer surface alloy and, for comparison, on Ru(0001) were investigated by temperature programmed desorption (TPD) and infrared reflection absorption spectroscopy (IRAS). The data reveal distinct modifications in the hydrogen adsorption behavior and also in the CO adsorption properties compared to adsorption of the individual components both on the mono-metallic and on the bimetallic surface. These modifications are discussed on an atomic scale, in a picture that involves adsorbate-adsorbate interactions and site-specific variations in the (local) adsorption properties of the bimetallic surface, due to electronic ligand and strain effects and geometric ensemble effects.
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