| 微乳液法制备Fe3O4/TiO2磁性纳米粒子 |
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| 引用本文： | 杜雪岩,马芬,李芳,徐凯,史世毅.微乳液法制备Fe3O4/TiO2磁性纳米粒子[J].陕西化工,2011(3):373-375. |
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| 作者姓名： | 杜雪岩 马芬 李芳 徐凯 史世毅 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050 |
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| 基金项目： | 国家自然科学基金项目（51061009）; 甘肃省高等学校基本科研基金 |
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| 摘 要： | 采用多元醇还原法制备出平均粒径为6.0 nm的Fe3O4磁性纳米粒子,以此磁性纳米粒子为核,在OP-10/正丁醇/环己烷/浓氨水反向微乳体系中制备出Fe3O4/TiO2磁性纳米复合粒子,通过XRD,TEM,VSM对复合粒子进行性能表征。结果表明,采用微乳液法能够制备出Fe3O4/TiO2磁性纳米复合粒子,并且包覆后比饱和磁化强度有所下降,但矫顽力仍趋近于0,显示超顺磁性。
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| 关 键 词： | 反相微乳液 Fe3O4纳米粒子 Fe3O4/TiO2复合粒子 |
Preparation of Fe_3O_4/TiO_2 nanoparticles by microemulsion |
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| DU Xue-yan,MA Fen,LI Fang,XU Kai,SHI Shi-yi.Preparation of Fe_3O_4/TiO_2 nanoparticles by microemulsion[J].Applied Chemical Industry,2011(3):373-375. |
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| Authors: | DU Xue-yan MA Fen LI Fang XU Kai SHI Shi-yi |
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| Affiliation: | (State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | The Fe3O4 magnetic nanoparticles with the average particle size of about 6.0 nm were prepared by a polyol reduction method.Fe3O4/TiO2 nanoparticles were synthesized in a OP-10/n-butanol/cyclohexane/ammonia reverse microemulsion system by using of as-prepared Fe3O4 nanoparticles as cores.The composite nanoparticles were characterized by X-ray powder diffraction（XRD）,transmission electron microscopy（TEM）,and vibrating sample magnetometer（VSM）.The results showed that the primary titanium dioxide coated successfully on the surface of Fe3O4 nanoparticles.After coating performance,their saturation magnetization decreased significantly,while their coercivity was also close to zero indicating superparamagnetic properties. |
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| Keywords: | reverse microemulsion Fe3O4 nanoparticles Fe3O4/TiO2 nanoparticles |
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