TY - JOUR

T1 - Polyoxometalates in visible-light photocatalysis and solar energy conversion

AU - Al-Yasari, Ahmed

AU - Fielden, John

PY - 2014/12/1

Y1 - 2014/12/1

N2 - Polyoxometalates (POMs) are an important class of anionic molecular metal oxides, boasting an enormous range of structures and properties. They are commonly based on the high oxidation states of V, Mo and W and show strong absorptions in the ultraviolet (UV) due to their O-to-metal charge transfer transitions. This feature, and the ability of many species to act as stable, multi-electron acceptors means that POMs have a well-established UV photochemistry, primarily in the oxidation of organic substrates. The last decade has witnessed increasing efforts to achieve photochemistry with POMs under visible light, through sensitization with molecular or semiconductor chromophores, or by extending the visible absorption of the POMs themselves. Notable achievements have included light driven oxidation of water, and light driven reduction of protons to H2. In this review, we summarize these achievements and provide a perspective on a growing body of work exploiting POMs in light energy conversion.

AB - Polyoxometalates (POMs) are an important class of anionic molecular metal oxides, boasting an enormous range of structures and properties. They are commonly based on the high oxidation states of V, Mo and W and show strong absorptions in the ultraviolet (UV) due to their O-to-metal charge transfer transitions. This feature, and the ability of many species to act as stable, multi-electron acceptors means that POMs have a well-established UV photochemistry, primarily in the oxidation of organic substrates. The last decade has witnessed increasing efforts to achieve photochemistry with POMs under visible light, through sensitization with molecular or semiconductor chromophores, or by extending the visible absorption of the POMs themselves. Notable achievements have included light driven oxidation of water, and light driven reduction of protons to H2. In this review, we summarize these achievements and provide a perspective on a growing body of work exploiting POMs in light energy conversion.

KW - Polyoxometalates

KW - Photocatalysis

KW - Artificial Photosynthesis

KW - Excitonic Photovoltaics

KW - Electron Transfer

U2 - 10.1166/rase.2014.1077

DO - 10.1166/rase.2014.1077

M3 - Journal article

VL - 3

SP - 304

EP - 319

JO - Reviews in Advanced Sciences and Engineering

JF - Reviews in Advanced Sciences and Engineering

SN - 2157-9121

IS - 4

ER -