Hydrothermal synthesis of superparamagnetic Fe3O4 nanoparticles with ionic liquids as stabilizer
Hydrothermal synthesis of superparamagnetic Fe3O4 nanoparticles with ionic liquids as stabilizer
复制标题
以离子液体为稳定剂水热合成超顺磁性 Fe3O4 纳米颗粒
DOI：
10.1016/j.materresbull.2014.11.022
复制
发表时间：
2015-02-01
影响因子：
5.4
通讯作者：
Li, Yin-Ping
中科院分区：
文献类型：
--
作者：
Liu, Xiao-Di;Chen, Hao;Li, Yin-Ping
以离子液体氯化十六烷基-3-甲基咪唑（[C（16）mim]Cl）为辅助剂，在水热条件下成功合成了超顺磁性Fe 3 O 4纳米粒子。采用X射线衍射（XRD）、X射线光电子能谱（XPS）、透射电子显微镜（TEM）和高分辨透射电子显微镜（HRTEM）对样品的结构和形貌进行了表征，结果表明，合成的反尖晶石型Fe 3 O 4纳米粒子平均粒径约为10 nm，具有较好的分散性。更重要的是，发现[C（16）mim]Cl作为Fe 3 O 4纳米粒子的稳定剂，吸附在粒子表面，防止粒子团聚。此外，所制备的超顺磁性Fe 3 O 4纳米粒子在300 K时的饱和磁化强度为67.69 emu/g。(C)2014爱思唯尔有限公司版权所有。
Superparamagnetic Fe3O4 nanoparticles have been successfully synthesized under hydrothermal condition with the assistant of ionic liquid 1-hexadecyl-3-methylimidazolium chloride ([C(16)mim]Cl). The structure and morphology of the sample have been investigated by X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), transmission electron microscopy (TEM), and high-resolution TEM (HRTEM), and the results indicate that the as-synthesized inverse spinel Fe3O4 nanoparticles have an average diameter of about 10 nm and exhibit relatively good dispersity. More importantly, it is found that [C(16)mim]Cl acts as stabilizer for the Fe3O4 nanoparticles by adsorbing on the particles surfaces to prevent the agglomeration. In addition, the obtained superparamagnetic Fe3O4 nanoparticles have a saturation magnetization of 67.69 emu/g at 300 K. (C) 2014 Elsevier Ltd. All rights reserved.