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 journalArticlepeer-review

17 Scopus citations


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 (US)
Pages (from-to)152-157
Number of pages6
JournalCanadian Journal of Chemistry
Issue number2
StatePublished - 2011

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry
  • Organic Chemistry


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