Vanadium containing keggin–type polyoxometalate supported on anatase as an efficient and reusable catalyst for oxidation of thiols

In this manuscript, vanadium polysilicotangestate (H7SiV3W9O40) (SiVW) as a Keggin-type polyoxometalate was synthesized and immobilized on anatase TiO2 via sol-gel method. The materials characterized by XRD, UV-Vis, IR techniques. Catalytic activity of synthesized nanocomposite was tested on oxidative of thiols. This Keggin-type supported catalyst was shown to be able to have oxidative of thiols into the corresponding disulfides with high yield. The advantages of this method are nontoxic, mild condition and environmentally friendly. This system, SiVW@TiO2/H2O2, provides an efficient and convenient method for oxidation of thiols.