Hydrothermal synthesis and formation mechanism of micrometer-sized MoO2 hollow spheres

被引：30
作者：
Guo, Cheng-hua
Zhang, Gui-jun
Shen, Zhu-rui
Sun, Ping-chuan
Yuan, Zhong-yong
Jin, Qing-hua [1 ]
Li, Bao-hui
Ding, Da-tong
Chen, Tie-hong
机构：
[1] Nankai Univ, Coll Chem, Tianjin 300071, Peoples R China
[2] Nankai Univ, Coll Phys, Tianjin 300071, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL PHYSICS | 2006年 / 19卷 / 06期
关键词：
MoO2; micrometer-sized hollow spheres; cationic surfactants;
D O I：
10.1360/cjcp2006.19(6).543.6
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Micrometer-sized MoO2 hollow spheres were synthesized hydrothermally with ammonium heptamolybdate tetrahydrate as molybdenum source, Cetyltrimethylammonium bromide as structure-directing agent and C2H5OH as reducing agent, respectively. The products were investigated by X-ray diffraction, thermogravimetry and differential thermal analysis, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. A morphology transition of "blocks-solid spheres-hollow spheres" during the growth process was observed and the possible mechanism for the formation of MoO2 samples was proposed to be through a microscale Kirkendall effect.
引用
收藏
页码：543 / 548
页数：6
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