Catalysis of Oxygen Cathodic Reduction by Adsorbed Iron(111)‐Tetra (N,N,N‐Trimethylanilinium) Porphyrin on Glassy Carbon Electrodes

Abstract

The adsorption of iron(111)‐tetra (N,N,N‐trimethylanilinium) porphyrin on glassy carbon was studied in aqueous solutions using cyclic voltammetry, differential pulse voltammetry, chronoamperometry, and the RRDE technique. The porphyrin was found to catalyze oxygen electroreduction; the overpotential is reduced by about 400 mV and the hydrogen peroxide yield is ≃ 5% compared to ≃ 25% in the absence of catalyst.