Direct metal substitution of electropolymerized ferriprotoporphyrin: A simple electrode-modification process for developing electrocatalytic materials

Jason Alan Bennett, Karissa L. Sterling, James E. Pander

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Abstract

A simple approach for expanding metalloporphyrins as electrocatalytic materials is introduced. This new method involves the direct electropolymerization of an electrically conducting layer of ferriprotoporphyrin followed by a metal-substitution reaction executed by soaking the electrode in an aqueous metal-salt solution. This process exchanges the iron center of the surface-bound protoporphyrin with the metal ion of the salt solution. X-ray photoelectron spectroscopy and electrochemical methods confirm that this new metal is incorporated into the surface-bound porphyrin structure and alters the electrochemical properties of the electrode. This simple electrode modification process may expand the use of metalloporphyrins for electrocatalytic applications.

Original languageEnglish (US)
JournalECS Electrochemistry Letters
Volume2
Issue number10
DOIs
Publication statusPublished - Jul 26 2013

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All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Electrochemistry
  • Materials Chemistry

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