Polymer assisted synthesis and characterization of fine ZnWO4

Abstract

Zinc tungstate is a scintillator with excellent photocatalytic and photoluminescent properties. In the present study, fine sized ZnWO4 particles with monoclinic wolframate structure are prepared by chemical precipitation route assisted by polymer evaporation. The DTA/TGA and XRD techniques are employed to investigate the thermal behaviour and crystallite size evaluation of ZnWO4.The particle size and morphology of the powder that is heat treated at different temperature was characterized by SEM. The stretching and bending frequencies of the ZnWO4 is studied using FTIR. The result shows that the process provides a technically simple route for the precipitation of fine sized powder with narrow particle distribution. (2013) Trans Tech Publications, Switzerland.