Hydrothermal synthesis and phase transformation properties of W-doped VO<sub>2</sub>(M) nanoparticles

Yang Xue; Zou Jian

doi:10.7513/j.issn.1004-7638.2022.06.004

Volume 43 Issue 6

Jan. 2023

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Yang Xue, Zou Jian. Hydrothermal synthesis and phase transformation properties of W-doped VO2(M) nanoparticles[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 24-30. doi: 10.7513/j.issn.1004-7638.2022.06.004

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Yang Xue, Zou Jian. Hydrothermal synthesis and phase transformation properties of W-doped VO₂(M) nanoparticles[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 24-30. doi: 10.7513/j.issn.1004-7638.2022.06.004

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Hydrothermal synthesis and phase transformation properties of W-doped VO₂(M) nanoparticles

doi: 10.7513/j.issn.1004-7638.2022.06.004

Yang Xue,
Zou Jian

School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China

Received Date: 2022-10-26
Publish Date: 2023-01-13

Abstract

Abstract

In this paper, using ammonium metavanadate as the vanadium source, hydrazine monohydrate as the reducing agent and ammonium metatungstate as the dopant, the VO₂ powder doped with W from 0.0 to 2.0 at% was prepared by one-step hydrothermal method at 280 ℃, and was added to polyurethane to prepare VO₂/PU composite films. XRD, TEM, XPS and DSC were used to analyze the phase composition, morphology, element valence state and phase transformation performance of the synthesized samples. The transmittance of the films was measured by UV-Vis-NIR spectrometer. The results show that with W doping increasing from 0.0 to 2.0 at%, the phase transition temperature of vanadium dioxide decreases from 61.8 ℃ to 15 ℃. The composite film based on 1 at% W-doped vanadium dioxide powder shows a good solar modulating ability (ΔT_sol = 11.7%), which meets the practical application requirements of intelligent windows.
- vanadium dioxide,
- one-step hydrothermal treatment,
- W-doped,
- phase transformation properties,
- films

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References(21)

References

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