Synthesis, structural characterization and reactivity of manganese tungstate nanoparticles in the oxidative degradation of methylene blue

Nanoparticles of manganese tungstate (MnWO4) were prepared via an impregnation method using Mn(NO3)(2)center dot 4H(2)O and WO3 as a source of Mn and W, respectively. The morphology of the manganese tungstate nanoparticles was studied in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). MnWO4 nanoparticles showed severe catalytic performances for the degradation of organic dye (methylene blue, MB) in the presence of tert-butyl hydrogen peroxide, TBHP, as the oxidant at room temperature in water. (C) 2014 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.