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26 April 2024
 
  » arxiv » cond-mat/0211169

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Electrosorption of Br and Cl on Ag(100): Experiments and Computer Simulations
I. Abou Hamad ; Th. Wandlowski ; G. Brown ; P.A. Rikvold ;
Date 8 Nov 2002
Journal Journal of Electroanalytical Chemistry 554-555 (2003) 211-219 DOI: 10.1016/S0022-0728(03)00178-5
Subject Materials Science; Chemical Physics | cond-mat.mtrl-sci physics.chem-ph
AbstractWe present chronocoulometry experiments and equilibrium Monte Carlo simulations for the electrosorption of Br and Cl on Ag(100) single-crystal electrode surfaces. Two different methods are used to calculate the long-range part of the adsorbate-adsorbate interactions. The first method is a truncated-sum approach, while the second is a mean-field-enhanced truncated-sum approach. To compare the two methods, the resulting isotherms are fit to experimental adsorption isotherms, assuming both a constant electrosorption valency &gamma and also a coverage-dependent &gamma. While a constant &gamma fits the Br/Ag(100) well, a coverage-dependent or potential-dependent &gamma is needed for Cl/Ag(100).
Source arXiv, cond-mat/0211169
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