Journal
REVIEWS IN INORGANIC CHEMISTRY
Volume 37, Issue 2, Pages 95-103Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/revic-2017-0002
Keywords
electrodonor; irradiation; photocatalyst; surface plasmon resonance
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Funding
- Universiti Malaya Research Grant (UMRG) [RP 2012E]
- Fundamental Research Grant Scheme (FRGS) [FP0492013B]
- University of Malaya and Ministry of High Education (MOE), Malaysia.
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Gold nanoparticles measuring 3-30 nm deposited on semiconductors result in an effective photocatalyst against several pollutants. Its photocatalytic activities are significant under both UV and solar irradiation. In a photocatalytic system, the oxidation of pollutants takes place on the gold surface as the electron donor, while the electron is consumed by the reduction of oxygen as the electron acceptor on the semiconductor's surface. This promotes not only increased photocatalytic activities but also the green transformation of pollutant compounds to harmless compounds. The photosensitivity of semiconductors can be modified by tuning the size, shape, and contact of gold nanoparticles. This review highlights the function of gold nanoparticles in overcoming the limitation of transition metal oxide materials in photocatalytic applications.
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