%0 Journal Article
%A Wandlowski, T.
%A Wang, J. X.
%A Ocko, B. M.
%T Adsorption of bromide at the Ag(100) electrode surface
%J Journal of electroanalytical chemistry
%V 500
%@ 0022-0728
%C New York, NY [u.a.]
%I Elsevier
%M PreJuSER-40430
%P 418
%D 2001
%Z Record converted from VDB: 12.11.2012
%X The adsorption and phase formation of bromide on Ag(100) has been studied by chronocoulometry and surface X-ray scattering (SXS). With increasing electrode potential, bromide undergoes a phase transition from a lattice gas to an ordered c(2 x 2) structure (theta = 0.5). The degree of lateral disorder was estimated by comparing the SXS- and the electrochemical measurements. Based on chronocoulometric experiments, a thermodynamic analysis of charge density data was performed to describe the bromide adsorption at the Ag(100) electrode. The Gibbs surfaces excess, electrosorption valencies, Esin-Markov coefficients, and the Gibbs energy of adsorption, lateral interaction energies as well as surface dipole moments have been estimated. The experimental theta versus E- isotherms are modeled employing (i) a quasi-chemical approximation as well as (ii) the results of a recent Monte Carlo simulation. An attempt is made to discuss the structure data and thermodynamic quantities of bromide adsorption on Ag(100) on the basis of the Grahame-Parsons model of the Helmholtz layer. (C) 2001 Elsevier Science B.V. All rights reserved.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000168192000046
%R 10.1016/S0022-0728(00)00380-6
%U https://juser.fz-juelich.de/record/40430