Preparation And Characterization Of Wo3 Nano-Powder With Microemulsion Method
2008 2ND IEEE INTERNATIONAL NANOELECTRONICS CONFERENCE, VOLS 1-3(2008)
Abstract
WO3 nano-powder was synthesized by micro-reactor method in CTAB/n-butyl alcohol/n- octane/H2O microemulsion system and sodium tungstate and hydrochloric acid as reactants. Structure and properties of WO3 nano-powder were characterized by X-ray diffractometer, transmissive electron microscopy and UV-vis. It is shown that the particle sizes, topography of the particles and phase structures of WO3 nano-powder are changed with moisture content in the microemulsion system, calcination temperatures and different reactants, the sizes of WO3 nano-powder increase with moisture content in the microemulsion system and calcination temperatures. The sizes of WO3 particles obtained from ammonium tungstate as reactant are samaller than that sodium tungstate as reactant.
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Key words
W/O microemulsion,micro-reactor,CTAB,tungsten trioxide nanoparticles
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