Photostimulated electrocatalysis of water oxidation by conjugated polymers

Orawan Winther-Jensen, Bjorn Winther Jensen, Douglas R. MacFarlane

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18 Citations (Scopus)

Abstract

The photoelectrocatalytic activity of polyterthiophene (PTTh) was investigated. PTTh prepared by the vapour phase polymerisation technique was used as a working electrode. When the electrode was used in electrochemical water oxidation, illumination produced a significant increase in oxidation current at potentials beginning at ~ 100 mV below the expected water oxidation potential. Dissolved oxygen content was measured, confirming that the photostimulated process was water oxidation to oxygen. The PTTh electrode also showed photoconductivity under illumination, but its contribution was negligible in the photoelectrocatalytic experiment. These observations open the way to further development of conjugated polymer electrodes as electrocatalysts for water oxidation.

Original languageEnglish
Pages (from-to)307-309
Number of pages3
JournalElectrochemistry Communications
Volume13
Issue number4
DOIs
Publication statusPublished - 2011 Apr
Externally publishedYes

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Keywords

  • Conducting polymers
  • Photoconductivity
  • Photoelectrocatalysis
  • Polyterthiophene
  • Water oxidation
  • Water splitting

ASJC Scopus subject areas

  • Electrochemistry

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