Table of Contents
International Journal of Photochemistry
Volume 2014, Article ID 973484, 9 pages
Review Article

Photocatalysis of Titanium Dioxide for Water Disinfection: Challenges and Future Perspectives

1School of Science and Health, University of Western Sydney, Penrith, NSW 2751, Australia
2University of Western Sydney, Solar Energy Technologies, Penrith, NSW 2751, Australia

Received 9 May 2014; Revised 18 August 2014; Accepted 25 August 2014; Published 7 September 2014

Academic Editor: Rong-Jun Xie

Copyright © 2014 M. J. Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The performance of metal oxides such as titanium dioxide (TiO2), in the conversion of solar energy into chemical energy, is determined by semiconducting properties. The conversion process is closely related to the light-induced reactivity between oxide semiconductors and water, which may lead to partial water oxidation and consequently water disinfection. Key performance-related properties are considered here, including light absorption, light-induced ionisation over the band gap, charge separation, charge transport, charge transfer, and the chemical reactions taking place at anodic and cathodic sites. Optimisation of these interconnected performance-related properties is discussed, along with the photocatalytic application in water disinfection.