Journal Article

PreJuSER-28091

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Influence of anion adsorption on the step dynamics on Au(111) electrodes

Giesen, M.FZJ* ; Kolb, D. M.

2000
Elsevier Amsterdam

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Please use a persistent id in citations: doi:10.1016/S0039-6028(00)00813-X

Abstract: Using scanning tunneling microscopy, we have investigated the step dynamics on an Au(lll) single crystal electrode in aqueous electrolytes. Our studies focused on the influence of specifically adsorbed anions and the anion concentration on the mobility of gold atoms at monatomic-high step edges. The experiments were performed in chloride-containing and chloride-free H2SO4 electrolytes. From the quantitative analysis of equilibrium step fluctuations we deduce the dominant mass transport mechanisms as a function of the electrode potential and as a function of the anion concentration. Estimates of the energies involved in the mass transport are presented. (C) 2000 Elsevier Science B.V. All rights reserved.

Keyword(s): J ; diffusion and migration (auto) ; electrochemical methods (auto) ; equilibrium thermodynamics and statistical mechanics (auto) ; gold (auto) ; single crystal surfaces (auto) ; scanning tunneling microscopy (auto) ; solid-liquid interfaces (auto) ; stepped single crystal surfaces (auto) ; surface diffusion (auto) ; surface structure, morphology, roughness, and topography (auto)

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut für Grenzflächenforschung und Vakuumphysik (IGV)

Research Program(s):

1. Neue Methoden und Verfahren zur Grenzflächen- und Vakuumforschung (25.45.0)

Appears in the scientific report 2000

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