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One-Pot Reaction and Subsequent Annealing to Synthesis Hollow Spherical Magnetite and Maghemite Nanocages
被引:54
|作者:
Wu, Wei
[1
,2
,3
]
Xiao, Xiangheng
[2
,3
]
Zhang, Shaofeng
[2
]
Li, Hang
[2
]
Zhou, Xiaodong
[2
]
Jiang, Changzhong
[1
,2
,3
]
机构:
[1] Wuhan Univ, Minist Educ, Key Lab Acoust & Photon Mat & Devices, Wuhan 430072, Peoples R China
[2] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China
[3] Wuhan Univ, Ctr Electron Microscopy, Wuhan 430072, Peoples R China
来源:
关键词:
Magnetite;
Maghemite;
Sol-gel growth;
Nanocages;
IRON-OXIDE NANOPARTICLES;
FUNCTIONALIZATION;
PARTICLES;
DELIVERY;
CORE;
D O I:
10.1007/s11671-009-9342-6
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
Water-soluble hollow spherical magnetite (Fe3O4) nanocages (ca. 100 nm) with high saturation magnetization are prepared in a one-pot reaction by sol-gel method and subsequent annealing to synthesise the maghemite (gamma-Fe2O3) nanocages with similar nanostructures. The nanocages have been investigated by powder X-ray diffraction (XRD), transmission electron microscope (TEM), high-resolution transmission electron microscope (HRTEM), and superconducting quantum interference device (SQUID). The results indicated that glutamic acid played an important role in the formation of the cage-like nanostructures.
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页码:926 / 931
页数:6
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