Synthesis of ZnWO4 nano-particles by a molten salt method

ZnWO4 nano-particles were successfully synthesized by a molten salt method at 300 C. The as-prepared powders were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and photoluminescent spectra techniques (PL), respectively. The size and morphology of ZnWO4 nano-particles were affected by such conditions as the calcining time and the weight ratio of the salt to the ZnWO4 precursor. The resultant sample is a pure phase of ZnWO4 without any impurities. The PL spectra results showed that the optical property of ZnWO4 crystallites obviously relied on their particle sizes. (c) 2007 Elsevier B.V. All rights reserved.