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Kinetics of electrooxidation of phenol on polycrystalline platinum

Pierożyński B., Piotrowska G., Mikołajczyk T.

Polish Journal of Chemical Technology

2015

Vol. 17, nr 2

126--130

This work reports on kinetics of phenol electrooxidation reaction (PhER), examined at polycrystalline Pt electrode in 0.5 M H2SO4 and 0.1 M NaOH supporting solutions. Important aspects of PhER kinetics were analysed based on potential-dependent, a.c. impedance-derived values of charge-transfer resistance and capacitance parameters. Special attention was also given to the influence of supporting electrolyte ions on the process of phenol oxidation (pH dependence of the PhER), in relation to an important role of anion adsorption on the Pt catalyst surface.