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

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

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 d...

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Veröffentlicht in:Chemical Communications 2012, Vol.48 (14), p.2027-2029
Hauptverfasser: Cummings, Charlie Y., Marken, Frank, Peter, Laurie M., Tahir, A. A., Wijayantha, K. G. Upul
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:1359-7345
1364-548X
DOI:10.1039/c2cc16382a