VO<sub>2</sub>(M)粉体合成与表征

doi:10.11896/cldb.21010087

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Abstract Mphase vanadium dioxide(VO₂(M)) is a kind of thermal insulation material with selective sunlight transmission and reflection. Intelligent thermal insulation plexiglass can be developed by combining polymethyl methacrylate (PMMA) and VO₂(M) powder with filling mode. It is particularly important to synthesize high quality VO₂(M) powder. In this work, VO₂(M) powder was prepared by hydrothermal redox process using vanadium pentoxide (V₂O₅) as vanadium source. The crystal structure, crystal morphology, solar transmittance and reflectance from 200 nm to 2 500 nm and their changes of vanadium dioxide(VO₂) before and after annealing were analyzed by X-ray diffractometer(XRD), field emission scanning electron microscopy (FESEM) and ultraviolet-visible-near infrared spectrophotometer respectively. The phase transition temperature and its change of VO₂(M) after annealing were analyzed by differential scanning calorimetry(DSC). It was found that regular spherical VO₂(M) powder with complete crystal shape and uniform size was synthesized by hydrothermal reaction at 185 ℃ for 48 h and argon protective annealing at 800 ℃ for 6 h. The corresponding synthetic VO₂(M) has the lowest phase transition temperature (66.02 ℃).

Key words： VO₂ (M) hydrothermal synthesis intelligent insulation window plexiglass

Published: 10 July 2022 Online: 2022-07-12

CLC number:

TB34

Fund:Open Project of National and Local Joint Engineering Laboratory for Comprehensive Utilization of Slog Environmental Protection Technology (SLGPT2019KF01-06) and the Foundation Project of Shaanxi University of Technology(SLG1810).

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	Articles by authors
	ZHANG Kun
	YUAN Xinqiang
	WANG Dan
	MEI Jing
	JIANG Peng
	ZHANG Wei

Cite this article:

ZHANG Kun,YUAN Xinqiang,WANG Dan, et al. Synthesis and Characterization of VO₂ (M) Powder[J]. Materials Reports, 2022, 36(13): 21010087-5.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.21010087 OR http://www.mater-rep.com/EN/Y2022/V36/I13/21010087

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