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Synthesis and photocatalytic activity of nano V-doped TiO2 particles in MCM-41 under UV–visible irradiation

Published online by Cambridge University Press:  31 January 2011

Kaustava Bhattacharyya ,
Salil Varma ,
Arvind K. Tripathi  and
Avesh K. Tyagi
Avesh K. Tyagi*
Affiliation:
Chemistry Division, Bhabha Atomic Research Center, Mumbai 400085, India
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The vanadium (V)-doped titania (Ti0.95V0.05O2) was impregnated in the host matrix of the pre-synthesized siliceous mesoporous material MCM-41 in a single pot synthesis step, by the wet impregnation route. The samples were characterized by x-ray diffraction, transmission electron microscopy (TEM), N2 adsorption, diffuse reflectance ultraviolet–visible spectroscopy (DRUVS). As compared to Ti0.95V0.05O2, the DRUV spectra of the impregnated catalysts showed a blue shift; still the absorption lies in the visible region. Presence of nano-sized (∼2–12 nm) V-doped titania particles in V-TiO2/MCM-41 was revealed by TEM and the particle size was found to increase with the loading of the V-doped titania in the host matrix. All impregnated samples were found to be more active than either the bulk V-doped titania or titania for photocatalytic oxidation of ethylene in air at ambient conditions under both UV and visible irradiation.

Keywords

CatalyticTransmission electron microscopy (TEM)Zeolite
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 1: Photocatalysis for Energy and Environmental Sustainability , January 2010 , pp. 125 - 133
Copyright
Copyright © Materials Research Society 2010

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