Abstract
Binary metal oxides with different degrees of covalent/ionic character of the oxygen-metal bond are tested as a partial coating of glassy carbon electrode surfaces. The electrocatalytic and antifouling properties of the resulting bicomponent electrode systems are analysed in view of possible applications in different fields of electrochemistry, such as electroremediation and electroanalysis. Based on the performance with respect to oxidation of ascorbic acid, as to sensitivity, repeatability of the responses, and activation of electrocatalytic oxidation, CeO2 has been preferred. This same electrode system has been further studied in respect to a trickier electrochemical process, namely the anodic oxidation of a chlorophenol derivative, which induces massive passivation of bare electrode surfaces. The effectiveness of the bicomponent electrode system in anodic oxidation of 2,4,6-trichlorophenol has been ascertained, over a wide range of concentrations, by comparison with pure glassy carbon surfaces.
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This work has been partially supported by a “José Castillejo” fellowship from Ministerio de Ciencia e Innovacion (JC2008-00294, Spain).
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Palacios-Santander, J., Terzi, F., Zanardi, C. et al. Electrocatalytic and antifouling properties of CeO2-glassy carbon electrodes. J Solid State Electrochem 20, 3125–3131 (2016). https://doi.org/10.1007/s10008-016-3413-2
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DOI: https://doi.org/10.1007/s10008-016-3413-2