A porphyrin-stabilized iridium oxide water oxidation catalyst

Benjamin D. Sherman, Smitha Pillai, Gerdenis Kodis, Jesse Bergkamp, Thomas E. Mallouk, Devens Gust, Thomas A. Moore, Ana L. Moore

Research output: Contribution to journalArticle

14 Citations (Scopus)


Colloidal solutions of iridium oxide hydrate (IrO2· nH2O) were formed using porphyrin stabilizers bearing malonate-like functional groups at each of the four meso positions of the porphyrin ring. Cyclic voltammetry and monitoring of solution oxygen concentrations under constant applied potential demonstrated the electrochemical catalytic activity of the porphyrin-IrO2·nH2O complexes for the oxidation of water to oxygen. Quenching of the porphyrin fluorescence in the complex implies strong interaction between the porphyrin and the IrO 2·nH2O. These results mark a step toward developing a porphyrin-based photoanode for use in a photoelectrochemical water-splitting cell.

Original languageEnglish
Pages (from-to)152-157
Number of pages6
JournalCanadian Journal of Chemistry
Issue number2
Publication statusPublished - Feb 16 2011


  • Electrochemical catalysis
  • Iridium oxide
  • Porphyrin
  • Water oxidation

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Organic Chemistry

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