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. Tangestaninejad^a,*, M. Moghadam^a,b, V. Mirkhani^a,  I. Mohammadpoor-Baltork^a and H. Salavati^c

^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