This title appears in the Scientific Report :
2001
Please use the identifier:
http://dx.doi.org/10.1016/S0022-0728(00)00380-6 in citations.
Adsorption of bromide at the Ag(100) electrode surface
Adsorption of bromide at the Ag(100) electrode surface
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 disorde...
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Personal Name(s): | Wandlowski, T. |
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Wang, J. X. / Ocko, B. M. | |
Contributing Institute: |
Institut für Grenzflächen und Vakuumtechnologien; ISG-3 Mikrostrukturforschung; IFF-IMF |
Published in: | Journal of electroanalytical chemistry, 500 (2001) S. 418 |
Imprint: |
New York, NY [u.a.]
Elsevier
2001
|
Physical Description: |
418 |
DOI: |
10.1016/S0022-0728(00)00380-6 |
Document Type: |
Journal Article |
Research Program: |
Struktur und Dynamik von Grenzflächen |
Series Title: |
Journal of Electroanalytical Chemistry
500 |
Subject (ZB): | |
Publikationsportal JuSER |
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. |