Hexagonal VO2 particles: synthesis, mechanism and thermochromic properties

Hui Yan Xu; Ke Wei Xu; Fei Ma; Paul K. Chu

doi:10.1039/c8ra00716k

Hexagonal VO₂ particles : synthesis, mechanism and thermochromic properties

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

Overview

6 Scopus Citations

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Author(s)

Hui Yan Xu
Ke Wei Xu
Fei Ma
Paul K. Chu

Detail(s)

Original language	English
Pages (from-to)	10064-10071
Journal / Publication	RSC Advances
Volume	8
Issue number	18
Online published	12 Mar 2018
Publication status	Published - 2018

Link(s)

DOI	DOI https://doi.org/10.1039/c8ra00716k Final Published version
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Attachment(s)	Documents Final Published Version Final Published version, 1.3 MB, PDF Publisher's Copyright Statement This full text is made available under CC-BY-NC 3.0. https://creativecommons.org/licenses/by-nc/3.0/
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85044091656&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(59dcfa9b-2e1c-45db-8538-7447f4907f94).html

Abstract

Monoclinic vanadium dioxide VO₂ (M) with hexagonal structure is synthesized by hydrothermal method, and the phase evolution is evidenced. Interestingly, the hexagonal morphology comes into being as a result of the low-energy coherent interfaces, (211)₁//(211)₂ and (211)₁//(020)₂. The size of hexagonal particles is well controlled by changing the concentration of precursor solutions. Hexagonal particles exhibit excellent thermochromic properties with a narrow hysteresis of 5.9 °C and high stability. In addition, the phase transition temperature can be substantially reduced down to 28 °C by simply W doping.