Solvothermal synthesis and characterization of size-controlled monodisperse Fe3O4 nanoparticles

被引：52

作者：

Gao, Guanhua ^{[1
]}

Shi, Rongrong ^{[1
]}

Qin, Wenqing ^{[1
]}

Shi, Youguo ^{[2
]}

Xu, Guofu ^{[3
]}

Qiu, Guanzhou ^{[1
]}

Liu, Xiaohe ^{[1
]}

机构：

[1] Cent S Univ, Dept Inorgan Mat, Changsha 410083, Hunan, Peoples R China

[2] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton MANA, Tsukuba, Ibaraki 3050044, Japan

[3] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2010年 / 45卷 / 13期

基金：

中国国家自然科学基金;

关键词：

IRON-OXIDE NANOPARTICLES; ONE-POT SYNTHESIS; MAGNETIC NANOPARTICLES; HYDROTHERMAL SYNTHESIS; DELIVERY-SYSTEM; CONTRAST AGENTS; NANOCRYSTALS; SURFACE; FUNCTIONALIZATION; MFE2O4;

D O I：

10.1007/s10853-010-4378-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Monodisperse Fe3O4 nanoparticles with narrow size distribution could be successfully synthesized in large quantities by a facile solvothermal synthetic method in the presence of oleic acid and oleylamine. Well-defined assembly of uniform nanoparticles with average sizes of 8 nm can be obtained without a further size-selection process. The sizes of final products could be readily tuned from 5 to 12 nm by adjusting the experimental parameters such as reaction time, temperature, and surfactants. The phase structures, morphologies, and magnetic properties of the as-prepared products were investigated in detail by X-ray diffraction, transmission electron microscopy, selected area electron diffraction, high-resolution transmission electron microscopy, and magnetometry with a superconducting quantum interference device. The magnetic study reveals that the as-synthesized nanoparticles are ferromagnetic at 2 K while they are superparamagnetic at 300 K.

引用

页码：3483 / 3489

页数：7

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