Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 24, Issue 17, Pages 2421-2440Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201303214
Keywords
metal oxides; composite materials; photocatalysis; semiconductor materials
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Funding
- German Research Foundation DFG [MA 5392/3-1]
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The formation of semiconductor composites comprising multicomponent or multiphase heterojunctions is a very effective strategy to design highly active photocatalyst systems. This review summarizes the recent strategies to develop such composites, and highlights the most recent developments in the field. After a general introduction into the different strategies to improve photocatalytic activity through formation of heterojunctions, the three different types of heterojunctions are introduced in detail, followed by a historical introduction to semiconductor heterojunction systems and a thorough literature overview. Special chapters describe the highly-investigated carbon nitride heterojunctions as well as very recent developments in terms of multiphase heterojunction formation, including the latest insights into the anatase-rutile system. When carefully designed, semiconductor composites comprising two or three different materials or phases very effectively facilitate charge separation and charge carrier transfer, substantially improving photocatalytic and photoelectrochemical efficiency.
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