Preparation and characterization of silicone-oil based γ-Fe2O3/Fe3O4 magnetic fluid

被引：0
作者：
Zheng, Hang [1 ]
Shao, Huiping [1 ]
Zhao, Zifen [1 ]
机构：
[1] Institute for Advanced Material & Technology, University of Science and Technology Beijing, Beijing
来源：
Gongneng Cailiao/Journal of Functional Materials | 2015年 / 46卷 / 19期
关键词：
Magnetic fluid; Silicone-oil base; γ-Fe[!sub]2[!/sub]O[!sub]3[!/sub] nanoparticles; γ-Fe[!sub]2[!/sub]O[!sub]3[!/sub]/Fe[!sub]3[!/sub]O[!sub]4[!/sub] composite particles;
D O I：
10.3969/j.issn.1001-9731.2015.19.008
中图分类号：
学科分类号：
摘要：
In this paper, Fe3O4 magnetic nanoparticles were successfully prepared from FeCl3·6H2O and FeSO4·7H2O by chemical co-precipitation method, and their surface was modified by sodium oleate. The γ-Fe2O3 magnetic nanoparticles were obtained by full thermal oxidizing of Fe3O4 and the composite magnetic particles (γ-Fe2O3 and Fe3O4) were achieved by partial thermal oxidizing of Fe3O4. Using silicone oil as carrier liquid and oleic acid as surface modification agent, Fe3O4 magnetic fluid, γ-Fe2O3 magnetic fluid, and the composite magnetic fluid (γ-Fe2O3 and Fe3O4) were prepared. It was found that the appearance of magnetic nanoparticles was not changed during the thermal oxidizing. The mean size of all magnetic nanoparticles were about 10-20 nm. The saturation magnetization of these magnetic fluids prepared was 12.45, 14.25 and 25.08 A·m2/kg. © 2015, Chongqing Functional Materials Periodical Press Co. Ltd. All right reserved.
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页码：19037 / 19040
页数：3
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