J. Iran. Chem. Soc., Vol. 7, Supp. 1 July 2010, pp.S161~S174.

Current location: JICS Archive > Vol. 7 > Supplement. 1 > Articles : 15

Vanadium-Containing Polyphosphomolybdate Immobilized on TiO2 Nanoparticles: A Recoverable and Efficient Catalyst for Photochemical, Sonochemical and Photosonochemical Degradation of Dyes under Irradiation of UV Light

S. Tangestaninejada,*, M. Moghadama,b, V. Mirkhania,  I. Mohammadpoor-Baltorka and H. Salavatic

aDepartment of Chemistry, University of Isfahan, Isfahan, 81746-7344,Iran
bDepartment of Nanotechnology Engineering, University of Isfahan, Isfahan 81746-73441, Iran
cDepartment of Chemistry, Payame Noor University (PNU), 81395-671, Isfahan, Iran  

A new photocatalyst, nanoporous anatase TiO2 crystalline particles coupled by Na5PV2Mo10O40 Keggin units, TiO2-PVMo, was prepared by combination of the methods of sol-gel and hydrothermal treatment. The catalyst was characterized by X-ray diffraction (XRD), UV diffuse reflectance spectroscopy (UV-DRS), FT-IR spectroscopy, Scanning Electron Microscopy (SEM) and cyclovoltametery (CV). This photocatalyst exhibited a good photocatalytic (UV region) and sonocatalytic activity in the decomposition of different dyes in aqueous systems. The TiO2-PVMo composite showed higher photocatalytic and sonocatalytic activity than pure polyoxometalate or pure TiO2.

Keywords: Polyoxometalate, Photocatalytic, Sonocatalytic, Degradation, Dyes

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