Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 53, Issue 51, Pages 14196-14200Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201408374
Keywords
Keggin-type structures; plasmonic gold nanoparticles; polyoxometalates; solar energy conversion; tungsten trioxide
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Funding
- Maestro Project [2012/04A/ST4/00287]
- National Science Center (Poland)
- OPUS (National Science Centre) [2011/03/B/ST5/02746]
- European Union [NMP4-SL-2012-3100333]
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Tungsten trioxide (WO3) is one of a few stable semiconductor materials liable to produce solar fuel by photoelectrochemical water splitting. To enhance its visible light conversion efficiency, we incorporated plasmonic gold nanoparticles (Au NPs) derivatized with polyoxometalate (H3PMo12O40) species into WO3. The combined plasmonic and catalytic effect of Au NPs anchored to the WO3 surface resulted in a large increase of water photooxidation currents. Shielding the Au NPs with polyoxometalates appears to be an effective means to avoid formation of recombination centers at the photoanode surface.
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