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Enhanced Water Splitting at Thin Film Tungsten Trioxide Photoanodes Bearing Plasmonic Gold–Polyoxometalate Particles
Author(s) -
Solarska Renata,
Bienkowski Krzysztof,
Zoladek Sylwia,
Majcher Aldona,
Stefaniuk Tomasz,
Kulesza Pawel J.,
Augustynski Jan
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201408374
Subject(s) - tungsten trioxide , polyoxometalate , materials science , tungsten , plasmon , water splitting , semiconductor , nanoparticle , colloidal gold , nanotechnology , iridium , photochemistry , catalysis , plasmonic nanoparticles , chemical engineering , photocatalysis , optoelectronics , chemistry , metallurgy , organic chemistry , engineering
Tungsten trioxide (WO 3 ) 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 (H 3 PMo 12 O 40 ) species into WO 3 . The combined plasmonic and catalytic effect of Au NPs anchored to the WO 3 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.