The investigation of efficient preparation process and optimization of vanadium dioxide powder

CHEN Mingdi; HAN Yuxi; WU Binhe

doi:10.7513/j.issn.1004-7638.2026.03.002

Volume 47 Issue 3

Jun. 2026

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CHEN Mingdi, HAN Yuxi, WU Binhe. The investigation of efficient preparation process and optimization of vanadium dioxide powder[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(3): 10-19. doi: 10.7513/j.issn.1004-7638.2026.03.002

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CHEN Mingdi, HAN Yuxi, WU Binhe. The investigation of efficient preparation process and optimization of vanadium dioxide powder[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(3): 10-19. doi: 10.7513/j.issn.1004-7638.2026.03.002

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The investigation of efficient preparation process and optimization of vanadium dioxide powder

doi: 10.7513/j.issn.1004-7638.2026.03.002

College of Physics, Donghua University, Shanghai 201620, China

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Received Date: 2025-04-21
Accepted Date: 2025-05-30
Rev Recd Date: 2025-05-13
Publish Date: 2026-06-29

Abstract

Abstract

VO₂ powder features high specific surface area, strong adsorption capability, and reversible insulator–metal phase transition. These properties endow it with significant application potential in gas sensing, smart windows, and optoelectronic switches and other fields. To address the limitations of conventional fabrication routes, such as long preparation cycle and unstable process parameters, monoclinic-phase (M-phase) VO₂ powder was synthesized using V₂O₅ as vanadium source via an optimized sol–gel method combined with annealing process. The precursor preparation process was improved, resulting in a significant reduction in synthesis time, from over 24 hours to less than 8 hours. Static air oxidation was employed to prevent product dispersion during synthesis. The latent heat of the phase transition, as measured by differential scanning calorimetry (DSC), was employed as the performance evaluation indicator for material evaluation. Using this parameter, two critical processing variables, annealing temperature and ambient pressure, were systematically investigated and optimized. The optimal annealing conditions were determined to be 450 ℃ and 1.5 × 10⁴ Pa. The results of this study enabled the efficient and stable synthesis of monoclinic-phase (M-phase) VO₂ powder, facilitating further practical application of this phase-transition material in optoelectronic functional devices.
- VO₂ powder,
- sol-gel method,
- annealing process,
- process optimization,
- M-phase VO₂,
- latent heat of phase transition

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References(26)

References

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