Controllable synthesis, characterization, and magnetic properties of magnetic nanoparticles encapsulated in carbon nanocages and carbon nanotubes

被引：5
|
作者：
Qi, Xiaosi [1 ,2 ,3 ]
Xu, Jianle [1 ]
Zhong, Wei [2 ,3 ]
Au, Chaktong [4 ]
Du, Youwei [2 ,3 ]
机构：
[1] Guizhou Univ, Coll Sci, Guiyang 550025, Peoples R China
[2] Nanjing Univ, Nanjing Natl Lab Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[3] Nanjing Univ, Jiangsu Prov Lab NanoTechnol, Nanjing 210093, Jiangsu, Peoples R China
[4] Hong Kong Baptist Univ, Dept Chem, Hong Kong, Hong Kong, Peoples R China
来源：
DIAMOND AND RELATED MATERIALS | 2014年 / 45卷
基金：
中国国家自然科学基金;
关键词：
Nanostructures; Chemical vapor deposition; Morphology; Magnetic properties; RAMAN VIBRATIONAL-MODES; MICROWAVE-ABSORPTION; IRON NANOPARTICLES; RADIATION-DAMAGE; NANOCOMPOSITES; PERMEABILITY; NANOCAPSULES; COBALT; FE3O4;
D O I：
10.1016/j.diamond.2014.02.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By controlling the pyrolysis temperature, core/shell materials with Fe3O4 encapsulated in carbon nanocages (Fe3O4@CNCs) and Fe encapsulated in carbon nanotubes (Fe@CNTs) were synthesized selectively from acetylene using Fe2O3 nanoparticles as catalyst in chemical vapor deposition. Scanning electron microscopic study showed that the efficiency of generating Fe3O4@CNCs and Fe@CNTs was high, exceeding 95%. Transmission electron microscopic study confirmed the high selectivity to Fe3O4@CNCs and Fe@CNTs, with the former having morphology similar to that of the catalyst particles. With Fe3O4 and Fe nanoparticles tightly wrapped in graphitic layers, the obtained Fe3O4@CNCs and Fe@CNTs materials show high stability and good magnetic properties. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：12 / 19
页数：8
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