SPECULAR REFLECTION STUDIES OF GOLD ELECTRODES IN SITU.
CASE WESTERN RESERVE UNIV CLEVELAND OHIO ELECTROCHEMISTRY RESEARCH LAB
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Multiple specular reflection has been used to examine in situ the gold electrode in acid and alkaline solutions. Reflectivity-potential and linear sweep voltammetry curves have been recorded simultaneously. The wavelength dependence indicates that the reflectivity changes with potential arise principally because of penetration of the d.c. electric field associated with the interface into the metal and subsequent interactions with the internal photoelectric effect in gold associated with a 5d to 6s band transition. The present results demonstrate that multiple specular reflection techniques are particularly well suited to in situ studies of the specific adsorption of ions, the formation of mono and poly-layer of oxides, and the Faraday adsorption of ions such as lead and cadmium to form monolayers of these metals in gold. Author
- Atomic and Molecular Physics and Spectroscopy