Morphology-controlled synthesis of BaWO4 crystals via biominmetic SLM system

BaWO4 crystals with various morphologies had been synthesized via a biominmetic system of supported liquid membrane in the presence of different additive reagents at room temperature. The X-ray diffraction patterns showed that the obtained BaWO4 crystals were tetragonal structure. Scanning electron microscopy results of the samples revealed that additive reagents and reacting time could highly affect the morphology and size of BaWO4 crystals. In fluorescence spectra, there was an excellent blue-shift of luminescence. The growth processes of BaWO4 crystals with different morphologies were investigated and a possible growth mechanism was discussed. (C) 2008 Published by Elsevier B.V.