Title: Property improvements of nano TiO₂ in photodegradation of organic pollutions: a review

Authors: H.Y. He

Addresses: Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, 710021, China

Abstract: Nano TiO₂ as a potential photocatalyst has been widely studied for application of environmental decontamination. In this paper, we examine and review the efforts in property improvements by modification, synthesis technique and operation parameter combined with some theory analysis. The effects of the modification by coupling with precious metal and narrow semiconductor, and doping with N, S, and/or C were reviewed. The improvement in synthesis technique includes the increase in amount of doping N, S, and/or C, processing dependence and fabrication of aerogels and nanotubes. The improvement in operation parameter involves approaches to obtain appropriate values of pH, light intensity, H₂O₂, temperature, catalyst concentration, and initial dyes concentration.

Keywords: TiO₂; photocatalysts; modification; aerogels; nanotubes; property improvement; titanium dioxide; nano titania; nanomaterials; synthesis improvement; nanoparticles; operation parameters; photodegradation; organic pollutants; environmental pollution.

DOI: 10.1504/IJNBM.2011.042133

International Journal of Nano and Biomaterials, 2011 Vol.3 No.3, pp.256 - 281

Published online: 28 Nov 2014 *

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