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Heterogeneous photocatalysis: Recent advances and applications

Ibhadon, Alex Omo; Fitzpatrick, Paul

Authors

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Dr Alex Ibhadon A.O.Ibhadon@hull.ac.uk
Reader in Catalysis and Reactor Engineering

Paul Fitzpatrick



Abstract

Semiconductor heterogeneous photocatalysis, the subject of this review, is a versatile, low-cost and environmentally benign treatment technology for a host of pollutants. These may be of biological, organic and inorganic in origin within water and air. The efficient and successful application of photocatalysis demands that the pollutant, the catalyst and source of illumination are in close proximity or contact with each other. The ability of advanced oxidation technology to remove low levels of persistent organic pollutants as well as microorganisms in water has been widely demonstrated and, progressively, the technology is now being commercialized in many areas of the world including developing nations. This review considers recent developments in the research and application of heterogeneous semiconductor photocatalysis for the treatment of low-level concentrations of pollutants in water and air using titanium dioxide as a "model" semiconductor. The review considers charge transport characteristics on the semiconductor surface, photocatalyst reactor design and organic degradation mechanistic pathways. The effects of photoreactor operating parameters on the photocatalytic process are discussed in addition to mineralization and disinfection kinetics. © 2013 by the authors; licensee MDPI, Basel, Switzerland.

Journal Article Type Review
Publication Date Mar 4, 2013
Journal Catalysts
Print ISSN 2073-4344
Electronic ISSN 2073-4344
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 3
Issue 1
Pages 189-218
APA6 Citation Ibhadon, A. O., & Fitzpatrick, P. (2013). Heterogeneous photocatalysis: Recent advances and applications. Catalysts open access journal, 3(1), (189-218). doi:10.3390/catal3010189. ISSN 2073-4344
DOI https://doi.org/10.3390/catal3010189
Keywords Semiconductor, Photocatalysis, Band gap, Illumination, Reactor, Catalyst, Mineralization, Degradation
Publisher URL http://www.mdpi.com/2073-4344/3/1/189
Copyright Statement © 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
Additional Information Copy of article first published in: Catalysts, 201-, v.3, issue 1.

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Copyright Statement
© 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).



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