Cl electrosorption on Ag(100): Lateral interactions and electrosorption valency from comparison of Monte Carlo simulations with chronocoulometry experiments
Hamad, I. Abou · Mitchell, S. J. · Wandlowski, Th. · Rikvold, P. A. · Brown, G.
Original · EN
We present Monte Carlo Simulations using an equilibrium lattice-gas model for the electrosorption of Cl on Ag(100) single-crystal surfaces. Fitting the simulated isotherms to chronocoulometry experiments, we extract parameters such as the electrosorption valency gamma and the next-nearest-neighbor lateral interaction energy phiₙnn. Both coverage-dependent and coverage independent gamma were previously studied assuming a constant phiₙnn [I. Abou Hamad, Th. Wandlowski, G. Brown, P.A. Rikvold, J. Electroanal. Chem. 554-555 (2003) 211]. Here, a self-consistent, entirely electrostatic picture of the lateral interactions with a coverage-dependent phiₙnn is developed, and a relationship between phiₙnn and gamma is investigated for Cl on Ag(100).
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