Voltammetric and spectroelectrochemical studies on 4-aminophenol at gold electrodes in aqueous and organic media |
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Authors: | Johannes Schwarz Wolfram Oelßner Frank Schumer |
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Affiliation: | a Kurt-Schwabe-Institut für Mess- und Sensortechnik e.V. Meinsberg, D-04720 Ziegra-Knobelsdorf, Germany b Institut für Anorganische Chemie, Universität Leipzig, D-04103 Leipzig, Germany |
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Abstract: | Voltammetric and UV-Vis spectroelectrochemical studies on 4-aminophenol (4-AP) at gold electrodes have been carried out in conventional electrochemical and in novel spectroelectrochemical cells. As base electrolytes acetonitrile with 10−2 M tetrabutylammonium hexafluorophosphate as supporting electrolyte and acetate buffer (pH 4.6) solutions have been used. 4-AP was electrochemically oxidized at gold electrodes at potentials >+0.1 V in aqueous solutions and at potentials >+0.5 V in acetonitrile solutions. The formation of an oxidation product has been characterized in situ by UV-Vis spectroscopy in a novel optical thin-layer spectroelectrochemical cell. |
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Keywords: | Spectroelectrochemistry UV-Vis spectroscopy 4-Aminophenol Optically transparent thin-layer electrode (OTTLE) Perforated gold electrode |
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