Citation: Zi Fei PENG, Wei JIANG. Synthesis and Characterization of Tungsten Doped Vanadium Dioxide Nanopowders by Thermolysis[J]. Chinese Chemical Letters, ;2006, 17(10): 1417-1420. shu

Synthesis and Characterization of Tungsten Doped Vanadium Dioxide Nanopowders by Thermolysis

Zi Fei PENG ,
Wei JIANG

Department of Chemistry, Shanghai Normal University, Shanghai 200234

Received Date: 15 May 2006

As far as we known, with white powdery tungstic acid (WPTA) used as the dopant for the first time, tungsten-doped vanadium dioxide (VO₂) nanopowders were synthesized through thermolysis at low temperature. The products were characterized by XRD, TEM and DSC.When WPTA was added into V₂O₅ (with W/V=2 atom%), the phase transition temperature (Tc)of VO₂ decreased markedly from 67.15℃ to 26.46℃ after annealing at 500℃. Such a low Tc is beneficial to the application and development of smart windows materials.
- Vanadium dioxide,
- white powdery tungstic acid,
- phase transition,
- thermolysis
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