Abstract
Polymer catalyst, iron phthalocyanine-wrapping poly(peptide), has been tested as a catalyst for the electroreduction of dioxygen and hydrogen peroxide by means of rotating ring-disk electrode (RRDE). The catalytic activity of disk electrode coated with polymer catalyst toward O2 and H2O2 significantly depended on the pH. Between pH 3 and 13 at negative potentials, O2 was reduced to H2O2 via a two-electron-reduction pathway, and the resultant H2O2 was partially reduced to H2O. Kinetic analysis showed that iron phthalocyanine-wrapping poly(peptide) catalyzed the reduction of H2O2 at lower rate than it catalyzed the reduction of O2.
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Hanabusa, K., Ye, X., Koyama, T. et al. Catalytic Electroreduction of Dioxygen and Hydrogen Peroxide on Graphite Electrode Modified by Iron Phthalocyanine-Wrapping Poly(peptide). Polym J 24, 485–489 (1992). https://doi.org/10.1295/polymj.24.485
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DOI: https://doi.org/10.1295/polymj.24.485
