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Charge carrier dynamics on mesoporous WO₃during water splitting

Charge carrier dynamics on mesoporous WO₃during water splitting

Pesci, Federico M., Cowan, Alexander J., Alexander, Bruce D., Durrant, James R. and Klug, David R. (2011) Charge carrier dynamics on mesoporous WO₃during water splitting. The Journal of Physical Chemistry Letters, 2 (15). pp. 1900-1903. ISSN 1948-7185 (doi:10.1021/jz200839n)

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Abstract

Transient absorption spectroscopy (TAS) has been employed to identify the spectra of photogenerated electrons and holes on WO₃. WO₃is a widely studied photoanode for the oxidation of water, and by measuring the decay of photoholes on the milliseconds to seconds time scale in the presence of an electron scavenger, we provide a lower limit for the required lifetime of holes for water oxidation on WO3. The rate of electron/hole recombination on WO3 has also been examined at a range of excitation intensities and is found to be nonlinear with excitation intensity.

Item Type: Article
Additional Information: [1] Online only journal. E-ISSN: 1948-7185. [2] Publication Date (Web): July 14, 2011. [3] Published in online issue: August 4, 2011. [3] Published in The Journal of Physical Chemistry Letters, August 4, 2011, Volume 2, Issue 15, pp. 1900-1903.
Uncontrolled Keywords: photocatalytic water oxidation, transient absorption spectroscopy, photogenerated charge carriers
Subjects: Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Related URLs:
Last Modified: 07 Dec 2016 14:21
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/7028

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