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

页码：2799 / 2802

页数：4

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