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Air atmosphere available fast one-pot synthesis of VO2 nanoparticles with excellent thermochromic properties by a novel liquid-shielding method
- Source :
- Journal of Materiomics, Vol 10, Iss 1, Pp 17-26 (2024)
- Publication Year :
- 2024
- Publisher :
- Elsevier, 2024.
-
Abstract
- As a typical strongly correlated transition oxide, vanadium dioxide (VO2) based nanomaterials have drawn many research attentions these years due to the giant metal-to-insulator phase transition (MIPT) at around 68 °C. However, due to the complexities of the V–O system and interplays between various vanadium oxide phases, the synthesis of high-quality VO2 nanopowders is still fraught with many challenges, especially in air atmosphere. In this paper, we report a novel air atmosphere available liquid-shielding synthesis method for thermochromic VO2 nanoparticles, by using low-eutectic molten-salt (LiCl–KCl) as the liquid-state air-insulation medium at elevated temperature and high-pressure pressed VOSO4–KCl pillars immersed in these liquid salts as the precursor. Small amounts of glucose are added to introduce a slight reductive environment, and well dispersed VO2 nanoparticles with excellent thermochromic properties can be directly synthesized at an ultra-low temperature of 375 °C. This feasible and atmosphere-available mass-production method is rarely reported in the related fields, which may provide a novel protocol strategy for the synthesis of high performance thermochromic VO2 and other functional oxide powders.
Details
- Language :
- English
- ISSN :
- 23528478
- Volume :
- 10
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of Materiomics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.8c618dcc75a2472ca50213a635f48d34
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.jmat.2023.03.011