Reconstruction and electrochemical oxidation of Au(110) surface in 0.1 M H2SO4

Koji Yoshida; Akiyoshi Kuzume; Peter Broekmann; Ilya V. Pobelov; Thomas Wandlowski

doi:10.1016/j.electacta.2014.06.162

Reconstruction and electrochemical oxidation of Au(110) surface in 0.1 M H₂SO₄

Koji Yoshida, Akiyoshi Kuzume, Peter Broekmann, Ilya V. Pobelov, Thomas Wandlowski

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Variations of the surface structure and composition of the Au(110) electrode during the formation/lifting of the surface reconstruction and during the surface oxidation/reduction in 0.1 M aqueous sulfuric acid were studied by cyclic voltammetry, scanning tunneling microscopy and shell-isolated nanoparticle enhanced Raman spectroscopy. Annealing of the Au(110) electrode leads to a thermally-induced reconstruction formed by intermixed (1×3) and (1×2) phases. In a 0.1 M H₂SO₄ solution, the decrease of the potential of the atomically smooth Au(110)-(1×1) surface leads to the formation of a range of structures with increasing surface corrugation. The electrochemical oxidation of the Au(110) surface starts by the formation of anisotropic atomic rows of gold oxide. At higher potentials we observed a disordered structure of the surface gold oxide, similar to the one found for the Au(111) surface.

Original language	English
Pages (from-to)	281-288
Number of pages	8
Journal	Electrochimica Acta
Volume	139
DOIs	https://doi.org/10.1016/j.electacta.2014.06.162
Publication status	Published - 2014 Sep 1

Keywords

Au(110)
Electrochemical scanning tunneling spectroscopy
SHINERS
Surface oxidation
Surface reconstruction

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

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title = "Reconstruction and electrochemical oxidation of Au(110) surface in 0.1 M H2SO4",

abstract = "Variations of the surface structure and composition of the Au(110) electrode during the formation/lifting of the surface reconstruction and during the surface oxidation/reduction in 0.1 M aqueous sulfuric acid were studied by cyclic voltammetry, scanning tunneling microscopy and shell-isolated nanoparticle enhanced Raman spectroscopy. Annealing of the Au(110) electrode leads to a thermally-induced reconstruction formed by intermixed (1×3) and (1×2) phases. In a 0.1 M H2SO4 solution, the decrease of the potential of the atomically smooth Au(110)-(1×1) surface leads to the formation of a range of structures with increasing surface corrugation. The electrochemical oxidation of the Au(110) surface starts by the formation of anisotropic atomic rows of gold oxide. At higher potentials we observed a disordered structure of the surface gold oxide, similar to the one found for the Au(111) surface.",

keywords = "Au(110), Electrochemical scanning tunneling spectroscopy, SHINERS, Surface oxidation, Surface reconstruction",

author = "Koji Yoshida and Akiyoshi Kuzume and Peter Broekmann and Pobelov, {Ilya V.} and Thomas Wandlowski",

note = "Funding Information: This work was supported by the Swiss National Science Foundation (200020_144471, NFP 62, Sinergia CRSII2 126969/1), the Swiss Commission for Technology and Innovation (project 13696.1), COST Action TD1002 and the University of Bern. AK acknowledges a MC fellowship (project ELCAMI).",

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doi = "10.1016/j.electacta.2014.06.162",

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AU - Kuzume, Akiyoshi

AU - Broekmann, Peter

AU - Pobelov, Ilya V.

AU - Wandlowski, Thomas

N1 - Funding Information: This work was supported by the Swiss National Science Foundation (200020_144471, NFP 62, Sinergia CRSII2 126969/1), the Swiss Commission for Technology and Innovation (project 13696.1), COST Action TD1002 and the University of Bern. AK acknowledges a MC fellowship (project ELCAMI).

PY - 2014/9/1

Y1 - 2014/9/1

N2 - Variations of the surface structure and composition of the Au(110) electrode during the formation/lifting of the surface reconstruction and during the surface oxidation/reduction in 0.1 M aqueous sulfuric acid were studied by cyclic voltammetry, scanning tunneling microscopy and shell-isolated nanoparticle enhanced Raman spectroscopy. Annealing of the Au(110) electrode leads to a thermally-induced reconstruction formed by intermixed (1×3) and (1×2) phases. In a 0.1 M H2SO4 solution, the decrease of the potential of the atomically smooth Au(110)-(1×1) surface leads to the formation of a range of structures with increasing surface corrugation. The electrochemical oxidation of the Au(110) surface starts by the formation of anisotropic atomic rows of gold oxide. At higher potentials we observed a disordered structure of the surface gold oxide, similar to the one found for the Au(111) surface.

AB - Variations of the surface structure and composition of the Au(110) electrode during the formation/lifting of the surface reconstruction and during the surface oxidation/reduction in 0.1 M aqueous sulfuric acid were studied by cyclic voltammetry, scanning tunneling microscopy and shell-isolated nanoparticle enhanced Raman spectroscopy. Annealing of the Au(110) electrode leads to a thermally-induced reconstruction formed by intermixed (1×3) and (1×2) phases. In a 0.1 M H2SO4 solution, the decrease of the potential of the atomically smooth Au(110)-(1×1) surface leads to the formation of a range of structures with increasing surface corrugation. The electrochemical oxidation of the Au(110) surface starts by the formation of anisotropic atomic rows of gold oxide. At higher potentials we observed a disordered structure of the surface gold oxide, similar to the one found for the Au(111) surface.

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KW - Surface reconstruction

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