Synthesis of Thermochromic Mo-Doped VO₂ Particles

Abstract:

Mo-doped vanadium dioxide particles were produced by simple solution-based, rapid microwave assisted, and calcination in an inert gas method respectively. The precursors and the heat-treated final powders were characterized by X-ray diffractometer (XRD), differential scanning calorimeter (DSC), scanning electron microscope (SEM), and transmission electron microscope (TEM). The Mo dopant influenced the crystal structure and phase transition of VO₂ (M) particles. The XRD pattern indicated that all Mo-doped VO₂ particles were monoclinic crystal. The DSC results showed that phase transformation temperature of VO₂ from monoclinic to tetragonal or rutile, which normally occurred at 67-68 oC was reduced to 43.18 oC, whereas over doping of Mo led to the increased transition temperature. The results suggested a significant effect of Mo doping content on the transition temperature of VO₂. Doping with an optimum amount of Mo into VO₂ structure can achieve the lowest phase transformation temperature of VO₂ powders.

• Periodical: Materials Science Forum (Volume 867)
• Pages: 88-92
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.867.88
• Online since: August 2016
• Authors: Phatcharee Phoempoon*, Lek Sikong
• Keywords: Molybdenum Doped, Phase Transitions, Thermochromic, Vanadium Dioxide

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