Surface relaxation at the metal/electrolyte interface |
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Authors: | CA Lucas |
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Affiliation: | Oliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 7ZE, UK |
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Abstract: | X-ray diffraction is an ideal technique for the in situ study of single crystal metal surfaces in an electrochemical environment. In this paper, measurements of the low-index surfaces of Au and Pt are described, in particular with reference to surface expansion effects. Surface expansion can be probed potentiodynamically to correlate expansion with the adsorption/desorption of solution species. In general, the results are in good agreement with recent theoretical calculations. The X-ray technique can also give insight into electrocatalytic reactions as shown by the results for the adsorption and oxidation of CO on Pt(111). |
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Keywords: | Surface relaxation X-ray scattering Atomic structure Au Pt CO |
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