Preparation and magnetic characterization of polymer-coating iron nanoparticles by reduction process of liquid phase

被引：0
|
作者：
Zhou, Zhongcheng [1 ]
Li, Songlin [1 ]
Zhou, Chen [1 ]
Ruan, Jianming [1 ]
机构：
[1] State Key Laboratory for Power Metallurgy, Central South University, Changsha 410083, China
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2013年 / 44卷 / 05期
关键词：
Block copolymers - Plastic coatings - Saturation magnetization - Nanomagnetics - Infrared radiation - Iron - X ray diffraction - Nanoparticles - Sodium Borohydride - Ultraviolet spectroscopy;
D O I：
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中图分类号：
学科分类号：
摘要：
The polymer-coating iron nanoparticles were prepared by NaBH4 reduction process of liquid phase in the micro-reactor formed by PVP-VAc block polymer. The products were characterized by X-ray diffraction(XRD), transmission electron microscopy(TEM), vibrating sample magnetometer(VSM), Ultraviolet spectra(UV) and infrared radiation spectra(IR).The results show that the as-prepared sample is body-centered cubic (bcc) iron. The bcc Fe is nanoparticles of 12-35 nm in diameter and the average diameter is 21 nm. The coercivity of the iron nano-particles is about 15.2 kA/m and the saturation magnetization is 18.6 A·m2/kg. The iron nano-particles aree coated by PVP-VAc block polymer.
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页码：1787 / 1790
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