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Interaction of Carbon Monoxide with Bimetallic Overlayers

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dc.contributor.author Santra, A K
dc.contributor.author Rao, C N R
dc.date.accessioned 2012-11-21T06:48:07Z
dc.date.available 2012-11-21T06:48:07Z
dc.date.issued 1994
dc.identifier 0022-3654 en_US
dc.identifier.citation Journal Of Physical Chemistry 98(23), 5962-5965 (1994) en_US
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/1029
dc.description Restricted Access en_US
dc.description.abstract Interaction of carbon monoxide with a few chosen bimetallic overlayers has been investigated along with the core-level binding energies of the deposited metals by employing X-rays as well as UV photoelectron spectroscopies. Core-level binding energies of the deposited metals around monolayer coverages (Ѳ∼1) are significantly different than those at high coverages or of the pure metals. Bimetallic overlayers such as Ni/Au and Cu/Pt showing large negative shifts in the surface core-level binding energy of the deposited metal interact strongly with carbon monoxide. In the case of Ni/Au (Ѳ(Ni) similar to 0.85), CO dissociates around 280 K. In contrast to this behavior, the interaction of CO with Pd/Mo or W, showing large positive shifts in the surface core-level binding energy, is very weak, and the CO desorption temperature is much lower than that from the clean Pd metal surface. The CO desorption temperature generally increases as the surface core-level shift of the deposited metal becomes more negative; the separation between the (5σ + 1∏) and 4σ levels of CO also increases in this direction. These results suggest that the variation in the strength of interaction of CO with bimetallic overlayers is a chemical manifestation of the shift in the surface core-level binding energies of the deposited metals at monolayer coverages. en_US
dc.description.uri http://dx.doi.org/10.1021/j100074a024 en_US
dc.language.iso en en_US
dc.publisher American Chemical Society en_US
dc.rights © 1994 American Chemical Society en_US
dc.subject Metal-Metal Bonds en_US
dc.subject Surfaces en_US
dc.subject Cu en_US
dc.subject Chemisorption en_US
dc.subject Photoemission en_US
dc.subject Adsorption en_US
dc.subject Pt(111) en_US
dc.subject Co en_US
dc.title Interaction of Carbon Monoxide with Bimetallic Overlayers en_US
dc.type Article en_US


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