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 O2 to H2O2 or H2O 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 O2 electrocatalysis is proposed.
|Number of pages||10|
|Journal||Journal of Electroanalytical Chemistry|
|State||Published - 10 Jul 1980|
ASJC Scopus subject areas
- Analytical Chemistry
- Chemical Engineering (all)