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Microstructure effect of nanocrystalline titanium dioxide prepared by microemulsion technique on photocatalytic decomposition of phenol

Published online by Cambridge University Press:  03 March 2011

Theera Anukunprasert ,
Chintana Saiwan  and
Enrico Traversa
Theera Anukunprasert*
Affiliation:
Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand
Chintana Saiwan
Affiliation:
Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand
Enrico Traversa
Affiliation:
Department of Chemical Science and Technology, University of Rome “Tor Vergata,” Rome, Italy
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Titanium dioxide (TiO2) was synthesized in the water-in-oil (w/o) microemulsion system of n-heptane/water/sodium bis (2-ethylhexyl) sulfosuccinate (AOT) surfactant. This study reports the effect of microstructure of the synthesized TiO2 nanoparticles on the photocatalysis degradation of phenol in an aqueous solution, as compared to commercial TiO2 (P25) and TiO2 synthesized by bulk precipitation. The results indicated that the rate of phenol decomposition catalyzed by the synthesized TiO2 from microemulsion techniques is faster than those of TiO2 synthesized by bulk precipitation and commercial P25. This is due to the small crystal size of TiO2 prepared by the microemulsion technique. The exposed titanium sites on the surface controlled by the morphology of synthesized TiO2 are critical for photocatalytic activity.

Keywords

NanostructureOxideTi
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 12 , December 2006 , pp. 3001 - 3008
Copyright
Copyright © Materials Research Society 2006

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