Electroanalysis of oxygen reduction. Part III. Selective reduction to hydrogen peroxide or water using polymeric attachment of metalloporphyrins

Armand Bettelheim, Ray J.H. Chan, Theodore Kuwana

Research output: Contribution to journalArticlepeer-review

118 Scopus citations

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 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.

Original languageEnglish
Pages (from-to)93-102
Number of pages10
JournalJournal of Electroanalytical Chemistry
Volume110
Issue number1-3
DOIs
StatePublished - 10 Jul 1980
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry
  • General Chemical Engineering
  • Electrochemistry

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