A. Bettelheim, R. Chan, T. Kuwana
Jul 1, 1980
Citations
1
Influential Citations
95
Citations
Quality indicators
Journal
Journal of Electroanalytical Chemistry
Abstract
Abstract Fe(III) tetra-( o -aminophenyl)porphyrin and Fe(III) tetra-( N -(2-hydroxyethyl)pyridyl)-porphyrin were attached to glassy carbon electrodes through amidization or esterifification of the methyl acryl chloride polymer. Long-term stability as well as high coverage (up to 10 −9 mol cm −2 ) enabled these electrodes to be useful with respect to catalysis of oxygen reduction. The reduction of O 2 to H 2 O 2 or H 2 O can be controlled by changing the surface coverage of the porphyrin. Based on results obtained for dissolved, adsorbed and polymercoated porphyrin, a general mechanism, for O 2 electrocatalysis is proposed.