A LOW-COST AND HIGH-YIELD PRODUCTION OF MAGNETITE NANORODS WITH HIGH SATURATION MAGNETIZATION

被引：13
作者：
Han, Chengliang [1 ,2 ]
Ma, Jinjin [3 ]
Wu, Hanzhao [1 ]
Yaowei [1 ]
Hu, Kunhong [1 ]
机构：
[1] Hefei Univ, Dept Chem & Mat Engn, Hefei 230601, Peoples R China
[2] Chinese Acad Sci, Inst Solid State Phys, Hefei 230031, Peoples R China
[3] Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, Nanjing 210016, Jiangsu, Peoples R China
来源：
JOURNAL OF THE CHILEAN CHEMICAL SOCIETY | 2015年 / 60卷 / 01期
基金：
中国国家自然科学基金;
关键词：
magnetite nanorod; preparation; goethite; magnetic properties; OXIDE NANOWIRE; NANOPARTICLES; FE3O4; NANOCRYSTALS; AGGREGATION; GLYCEROL; GROWTH; ARRAYS; SILVER; PD;
D O I：
10.4067/S0717-97072015000100005
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Nanopowders of single-crystalline rod-like magnetite have been synthesized in a glycerol-water system under hydrothermal condition by using the goethite (a-FeOOH) precursor. The influence of different reaction parameters on the morphology and composition of the products have been investigated. The structure, morphology and magnetic properties of the products were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), transmission electron microscope (TEM) and superconducting quantum interference device (SQUID). The results show that every as-prepared Fe3O4 nanorod with diameter ca. 70nm grows along the [110] direction which is one of easy magnetic axes of magnetite. The ratio of glycerol to water has a great effect on the purity at given temperature. Magnetic measurements indicated that the specific saturation magnetization (M-s) and coercivity values (H-c) of magnetite nanorods were 90 emu/ g and 172Oe, respectively. An in situ dissolution-reduction-reassembling formation mechanism is recommended for as-synthesized magnetite nanorods.
引用
收藏
页码：2799 / 2802
页数：4
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