Thermal Oxidation of V2O3 Nanocrystals: A Template Method for the Fabrication of Monoclinic Phase VO2 Nanocrystals

被引：4

作者：

Li, D. B. ^{[1
]}

Li, M. ^{[1
]}

Pan, J. ^{[1
]}

Zhang, Y. X. ^{[1
]}

Li, G. H. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2013年 / 13卷 / 08期

关键词：

Thermal Oxidation; VO2; Nanocrystals; Phase Transition; Infrared Property; THERMOCHROMIC PROPERTIES; INSULATOR-TRANSITION; VANADIUM; NANOPOWDERS; COMPOSITE; ROUTE;

D O I：

10.1166/jnn.2013.7493

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the fabrication of VO2(M) nanocrystals by direct thermal oxidation V2O3 nanocrystals. The controlling of the thermal oxidation temperature and vacuum is essential for obtaining pure VO2(M) nanocrystals. The VO2(M) nanocrystals have nearly a spherical morphology with sizes ranging from 50 to 80 nm and well dispersed. The phase transition temperature is about 65 degrees C with relatively narrow endothermic and exothermal peaks in DSC curve. Variable temperature resistance and infrared transmission measurements demonstrate a reversible phase transition of the VO2(M) nanocrystals. Our method is facile, economical and can be easily scaled-up for mass production.

引用

页码：5469 / 5473

页数：5

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