Interfacial proton-coupled electron transfer in metal oxide semiconductor photocatalysis

Interfacial proton-coupled electron transfer in metal oxide semiconductor photocatalysis Keywords Photocatalysis  Proton-coupled electron transfer  Water oxidation  Oxygen reduction  Dehalogenation Introduction Global energy and environmental issues currently demand development of renewable energy technologies, greener industrial processes, and procedures for elimination of contaminants. Metal oxide semiconductors (e.g., TiO ,Fe O ) are 2 2 3 suitable candidates to build photocatalytic and artificial photosynthetic systems to achieve these goals [1–9]. Under bandgap excitation, electron–hole pairs are created, then separated and diffuse from the material bulk to the surface, where subsequent electron or hole transfer at the interface triggers desired chemical conversions [7, 10, 11], e.g., oxidation of water to O (2H O ? O ? 4e ? 4H ), 2 2 2 C–H bond activation for selective oxidation, and reduction of oxygen/proton/ organic functional groups [12–14]. Over the past four decades, great progress has been made in expanding the light absorption region from the ultraviolet (UV) to the near infrared (NIR), matching the ambient solar spectrum, and in facilitating electron–hole separation/surface accumulation by doping, engineering of morphol- ogy, facets, and size, or hybridization with other materials [15–22]. However, reactions at the interface, where electron–hole transfer induces reconstruction of chemical bonds, have received much less attention. Earlier models http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Interfacial proton-coupled electron transfer in metal oxide semiconductor photocatalysis

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Publisher
Springer Netherlands
Copyright
Copyright © 2017 by Springer Science+Business Media B.V.
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-017-3043-z
Publisher site
See Article on Publisher Site

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