Self-assembly and synthesis mechanism of vanadium dioxide hollow microspheres

被引：31

作者：

Cao, Chuanxiang ^{[1
]}

Gao, Yanfeng ^{[1
]}

kang, Litao ^{[1
,2
]}

Luo, Hongjie ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Res Ctr Ind Ceram, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

CRYSTENGCOMM | 2010年 / 12卷 / 12期

基金：

中国国家自然科学基金;

关键词：

SPHERES; PHASE; NANOCRYSTALS; FABRICATION; NANOWIRES; VO2;

D O I：

10.1039/c0ce00321b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Rutile vanadium dioxide (VO2 (R)) hollow spheres with nanorods aggregating on their surface were successfully synthesized through a novel surfactant-assisted hydrothermal process in which polyvinylpyrrolidone (PVP) served as a soft template. The crystal structure and morphology were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Hollow spheres show an obvious Mott phase transition at 63.0 (heating semicycle) and 53.1 degrees C (cooling semicycle). Reaction conditions influencing the synthesis of these VO2 hollow spherical structures (i.e., reaction temperature, time and PVP addition amount) were investigated. Furthermore, a mechanism for the growth of the VO2 hollow spheres is proposed.

引用

页码：4048 / 4051

页数：4

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