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 | |
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