Key synthesis of magnetic Janus nanoparticles using a modified facile method

被引：25

作者：

Ali, Nisar ^{[1
]}

Zhang, Baoliang ^{[1
]}

Zhang, Hepeng ^{[1
]}

Zaman, Wajed ^{[2
]}

Li, Wei ^{[1
]}

Zhang, Qiuyu ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Sci, Key Lab Appl Phys & Chem Space, Minist Educ, Xian 710072, Peoples R China

[2] Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China

来源：

PARTICUOLOGY | 2014年 / 17卷

关键词：

Janus; Magnetic nanoparticles; Solvothermal process; Composite; Emulsion polymerization; PARTICLES; FABRICATION;

D O I：

10.1016/j.partic.2014.02.001

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Inorganic/organic poly(methylmethacrylate-acrylic acid-divinylbenzene) iron oxide Janus magnetic nanoparticles (P(MMA-AA-DVB)/Fe3O4) with strong magnetic domains and unique surface functionalities were prepared using a solvothermal process. The P(MMA-AA-DVB) nanoparticles were prepared via soap-free emulsion polymerization and used as a precursor for preparing Janus nanoparticles. The morphology and magnetic properties of the magnetic Janus nanoparticles formed were characterized using a laser particle size analyzer, transmission electron microscopy, Fourier transform infrared spectroscopy, vibrating sample magnetometry, and thermogravimetric analysis. The synthesized P(MMA-AA-DVB)/Fe3O4 magnetic Janus nanoparticles were characterized by a Janus structure and possessed a stable asymmetric morphology after being dually functionalized. The particle size, magnetic content, and magnetic domain of the P(MMA-AA-DVB)/Fe3O4 magnetic Janus nanoparticles were 200 nm, 40%, and 25 emu/g, respectively. The formation mechanism of the Janus nanoparticles was also investigated, and the results revealed that the reduction of Fe3+ ions and growth of Fe3O4 took place on the surface of the P(MMA-AA-DVB) polymeric precursor particles. The size of the Janus particles could be controlled by narrowing the size distribution of the P(MMA-AA-DVB) precursor nanoparticles. (C) 2014 Published by Elsevier B.V.

引用

页码：59 / 65

页数：7

共 30 条

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