A model for underpotential deposition in the presence of anions

Article

Authorship

Giménez, María Cecilia ; RAMIREZ PASTOR, ANTONIO JOSE ; LEIVA, EZEQUIEL PEDRO M.

Date

2010

Publishing House and Editing Place

American Institute of Physics

Magazine

JOURNAL OF CHEMICAL PHYSICS, vol. 132 (pp. 184703-184703) American Institute of Physics

Summary Information provided by the agent in SIGEVA

A simple model to study the effect of on top coadsorption of anions in underpotential deposition is formulated. It considers a lattice-gas model with pair potential interactions between nearest neighbors. As test system, the electrodeposition of silver on gold is studied by means of grand canonical Monte Carlo simulations. The influence of anions on the adsorption isotherms is analyzed. It is found that as the interaction between silver atoms and anions increases, the monolayer adsorbs at more ... A simple model to study the effect of on top coadsorption of anions in underpotential deposition is formulated. It considers a lattice-gas model with pair potential interactions between nearest neighbors. As test system, the electrodeposition of silver on gold is studied by means of grand canonical Monte Carlo simulations. The influence of anions on the adsorption isotherms is analyzed. It is found that as the interaction between silver atoms and anions increases, the monolayer adsorbs at more negative chemical potentials. For large interactions between silver atoms and anions, a expanded structure occurs for the silver monolayer. © 2010 American Institute of Physics.