STRUCTURAL EFFECTS INDUCED BY CO ADSORPTION ON Pt–BIMETALLIC SURFACES

C. A. Lucas (), N. M. Markovic and P. N. Ross
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C. A. Lucas: Oliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool, L69 7ZE, UK
N. M. Markovic: Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA
P. N. Ross: Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA

Surface Review and Letters (SRL), 1999, vol. 06, issue 05, 917-922

Abstract: Synchrotron surface X-ray scattering (SXS) studies have been performed during the coadsorption of metal adatoms and carbon monoxide on single crystal Pt surfaces in an electrochemical environment. As the applied electrode potential is the driving force behind adsorption, the electrochemical system is in chemical equilibrium, which results in a range of structural phenomena, such as mixing, segregation, compression and displacement. The mechanisms behind these effects are studied by monitoring the diffraction signals from ordered adsorbed metal and CO adlayers that occur on the Pt(111) and Pt(100) surfaces.

Date: 1999
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DOI: 10.1142/S0218625X99000986

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