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

doi:10.1039/c2cc16382a

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 language	English
Pages (from-to)	2027-2029
Number of pages	3
Journal	Chemical Communications
Volume	48
Issue number	14
Early online date	20 Dec 2011
DOIs	https://doi.org/10.1039/c2cc16382a
Publication status	Published - 2012

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title = "Kinetics and mechanism of light-driven oxygen evolution at thin film α-Fe2O3 electrodes",

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.",

author = "Cummings, {Charlie Y.} and Frank Marken and Peter, {Laurie M.} and Tahir, {A. A.} and Wijayantha, {K. G. Upul}",

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AU - Marken, Frank

AU - Peter, Laurie M.

AU - Tahir, A. A.

AU - Wijayantha, K. G. Upul

PY - 2012

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N2 - 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.

AB - 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.

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UR - http://dx.doi.org/10.1039/c2cc16382a

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JO - Chemical Communications

JF - Chemical Communications

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

Abstract

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