Hexagonal VO2 particles: synthesis, mechanism and thermochromic properties

被引：11
作者：
Xu, Hui Yan [1 ,2 ]
Xu, Ke Wei [1 ,3 ]
Ma, Fei [1 ,2 ]
Chu, Paul K. [2 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China
[2] City Univ Hong Kong, Dept Phys & Mat Sci, Tat Chee Ave, Kowloon, Hong Kong, Peoples R China
[3] Xian Univ Arts & Sci, Dept Phys & Optelect Engn, Xian 710065, Shaanxi, Peoples R China
来源：
RSC ADVANCES | 2018年 / 8卷 / 18期
基金：
中国国家自然科学基金;
关键词：
METAL-INSULATOR-TRANSITION; PHASE-TRANSITION; LUMINOUS TRANSMITTANCE; FILMS; TEMPERATURE; NANOSTRUCTURES; NANOBEAM; GROWTH; GLASS;
D O I：
10.1039/c8ra00716k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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, (21 (1) over bar)(1)//(2 (1) over bar(1) over bar)(2) and (2 (1) over bar(1) over bar)(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 degrees C and high stability. In addition, the phase transition temperature can be substantially reduced down to 28 degrees C by simply W doping.
引用
收藏
页码：10064 / 10071
页数：8
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