Abstract
The properties of the confined aqueous layer potentiodynamically formed on polycrystalline gold in aqueous phosphate and sodium dodecylsulphate solutions were studied using voltammetry, ellipsometry, and contact angle measurements. The nature of the incipient oxide layer was analyzed as a function of the cycling time in the double layer-oxide monolayer potential region. The replacement of the electrolyte by hexane allows the increase of the optical signal. Different potential cycling conditions change the homogeneity of the confined aqueous incipient oxide layer leading to different structural characteristics.
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Acknowledgments
This research project was supported by the “Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, CIC”, the “Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET”, the “Universidad Nacional de La Plata” and the “Universidad Nacional de San Luis”.
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Zerbino, J.O., Maltz, A., Falivene, C. et al. Electrochemical and optical study of the confined aqueous layer adsorbed on gold electrodes cycled in phosphate and dodecylsulphate solutions. J Appl Electrochem 44, 1355–1360 (2014). https://doi.org/10.1007/s10800-014-0730-y
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DOI: https://doi.org/10.1007/s10800-014-0730-y