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Development and potential of new generation photocatalytic systems for air pollution abatement: an overview
Author(s) -
Lim Melvin,
Zhou Yan,
Wang Lianzhou,
Rudolph Victor,
Lu Gao Qing Max
Publication year - 2009
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.321
Subject(s) - photocatalysis , pollutant , pollution , nanotechnology , photodissociation , environmental science , process (computing) , air pollution , biochemical engineering , chemistry , materials science , computer science , catalysis , engineering , photochemistry , organic chemistry , ecology , biology , operating system
Abstract Photocatalysis is the process by which various undesired substrates are reduced or oxidised on the surface of a photoresponsive material when exposed to a sufficiently energetic irradiation source. Together with other processes like photolysis and ozonation, photocatalysis forms a larger, important group of technologies known as Advanced Oxidation Processes or AOPs. This short review begins with an introduction to the fundamental processes and entities involved in general semiconductor photocatalysis. Various major air pollutants are considered, along with their health effects and traditional means of abatement. Recent advances in photocatalytic materials (including the use of novel materials other then titania), together with heterogeneous photoreactor design (in particular, of the flow‐type) are then described. Concluding remarks are included, along with some recommendations for possible future work. Copyright © 2009 Curtin University of Technology and John Wiley & Sons, Ltd.