Kinetics and mechanism of light-driven oxygen evolution at thin film α-Fe2O3 electrodes

Charlie Y. Cummings, Frank Marken, Laurie M. Peter, A. A. Tahir, K. G. Upul Wijayantha

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Abstract

Rate constants for recombination and hole transfer during oxygen evolution at illuminated alpha-Fe(2)O(3) electrodes were measured by intensity-modulated photocurrent spectroscopy and found to be remarkably low. Treatment of the electrode with a Co(II) solution suppressed surface recombination but did not catalyse hole transfer. Intermediates in the reaction were detected spectroscopically.
Original languageEnglish
Pages (from-to)2027-2029
Number of pages3
JournalChemical Communications
Volume48
Issue number14
Early online date20 Dec 2011
DOIs
Publication statusPublished - 2012

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