Synthesis of magnetic carrier sub-microparticles with high stability through carbon reduction and solation coating methods
来源期刊：Rare Metals2016年第11期
论文作者：Qiang Zhang Li-Bo Gao Jun-Yang Li Ze-Bin Guo Zhen-Yin Hai Yan-Ting Xing Chen-Yang Xue
文章页码：870 - 873
摘 要：This paper presents a novel approach in synthesizing SiO2–Fe3O4magnetic carrier with high stability.The Fe3O4 magnetic powders were synthesized via onestep method named carbon reduction method. The advantages of the methods are of simple process, none lead-in pollution agent, low cost and adaptation to large-lot production. The stability of the magnetic powders is improved through modifying the Fe3O4 with SiO2 in solation method.The results of the characterizations show that the superparamagnetic SiO2–Fe3O4sub-microparticles（600 nm）with saturation intensity of 36.4 m A·m2·g-1are obtained successfully. Moreover, the quantitating, repeatability and high stability of the carbon reduction method are demonstrated as well.
Qiang Zhang1,2，Li-Bo Gao1,2，Jun-Yang Li1,2，Ze-Bin Guo1,2，Zhen-Yin Hai1,2，Yan-Ting Xing1,2，Chen-Yang Xue1,2
1. National Key Laboratory for Electronic Measurement Technology,North University of China2. Science and Technology on Electronic Test & Measurement Laboratory,North University of China
摘 要：This paper presents a novel approach in synthesizing SiO2–Fe3O4magnetic carrier with high stability.The Fe3O4 magnetic powders were synthesized via onestep method named carbon reduction method. The advantages of the methods are of simple process, none lead-in pollution agent, low cost and adaptation to large-lot production. The stability of the magnetic powders is improved through modifying the Fe3O4 with SiO2 in solation method.The results of the characterizations show that the superparamagnetic SiO2–Fe3O4sub-microparticles（600 nm）with saturation intensity of 36.4 m A·m2·g-1are obtained successfully. Moreover, the quantitating, repeatability and high stability of the carbon reduction method are demonstrated as well.
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