Abstract
Zirconium Bismuth Molybdate / Zirconium Cerium Molybdate nanocomposites have been synthesized by co-precipitation method. Structural, morphological, thermal and opto-electric properties of as synthesized materials are investigated through XRD, SEM-EDAX, FTIR, TGA-DTA, DRS spectroscopy and photoluminescence spectroscopy. XRD data indicates the formation of polycrystalline composite with monoclinic ZrO2, orthorhombic γ-Bi2MoO6 and tetragonal Ce2(MoO4)3 phases present in it. SEM analysis shows zirconium bismuth molybdate nano particles dispersed in to the zirconium cerium molybdate matrix forming a metal matrix composite. Optical band-gap energy calculated from Kubelka-Munk plot describes semiconducting nature of the composite with a reduced bandgap energy compared to the constituent components. The composite exhibits improved thermal stability and enhanced photoluminescence. Photo-luminescent emission intensity of zirconium cerium molybdate is increased by the incorporation of zirconium bismuth molybdate, without altering the electronic states of host material, having three intense emission peaks in the blue-green wavelength region.
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