Abstract

Infrared reflexion-absorption spectroscopy was performed on gold electrodes which had been emersed from aqueous potassium cyanate electrolytes at different potentials. New information was, thereby, obtained on the process of emersion and the electrosorption of cyanate on gold. The polycrystalline gold electrodes could be emersed without any adhering solution (“hydrophobic”) only when traces of organic substances were present in the electrolyte. On such emersed electrodes the potential-dependent adsorption of cyanate was observed by the asymmetric stretching vibration at 2185 cm−1, and by hot bands. At the potential of anodic gold oxide formation the surface concentration of cyanate was found to drop to near zero.

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