| Fe3O4磁性纳米颗粒的合成及其调控 |
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| 引用本文： | 王海成,汪凡曦,于广华.Fe3O4磁性纳米颗粒的合成及其调控[J].功能材料,2012,43(8):1034-1037. |
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| 作者姓名： | 王海成 汪凡曦 于广华 |
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| 作者单位： | 北京科技大学材料物理与化学系,北京,100083 |
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| 基金项目： | 国家自然科学基金青年科学基金资助项目，高等学校博士学科点专项科研基金资助项目 |
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| 摘 要： | 利用水解共沉淀法制备了Fe3O4纳米颗粒,研究了温度和pH值对Fe3O4纳米颗粒粒径、形貌的影响关系。研究结果表明,反应温度从30℃升高到90℃,Fe3O4颗粒的粒径从6～8nm增大到10～12nm;同时,Fe3O4颗粒的饱和磁矩也随着Fe3O4颗粒粒径的增加而升高。溶液pH值会影响Fe3O4纳米颗粒的形状,高pH值易使合成的Fe3O4纳米颗粒为四方形,随着pH值的降低,Fe3O4纳米颗粒向球形转变。Fe3O4纳米颗粒的粒径和形状的可控性为进一步合成、调控Fe3O4电磁功能复合材料奠定了良好基础。
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| 关 键 词： | 磁性纳米颗粒 合成 复合材料 |
Synthesis and control of Fe3O4 magnetic nanoparticles |
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| WANG Hai-cheng,WANG Fan-xi,YU Guang-hua.Synthesis and control of Fe3O4 magnetic nanoparticles[J].Journal of Functional Materials,2012,43(8):1034-1037. |
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| Authors: | WANG Hai-cheng WANG Fan-xi YU Guang-hua |
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| Affiliation: | (Department of Material Physics and Chemistry,University of Science & Technology Beijing,Beijing 100083,China) |
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| Abstract: | The fcc structured Fe3O4 nanoparticles are prepared using hydrolysis coprecipitation in this paper.The effect of temperature and pH on the grain size and shape of the Fe3O4 magnetic nanoparticles were discussed.The results show that,reaction temperature affects the size of Fe3O4 nanoparticles.As the temperature rising from 30 to 90℃,the grain size increases from 6-8nm to 10-12nm and the saturation magnetic moment also increases.Meanwhile,the shape of Fe3O4 nanoparticles varies according to the pH of the solution.High pH leads to cubic particles while low pH causes spherical shape.The controllable size and shape of Fe3O4 nanoparticles lay a good foundation for further synthesis,regulation of electro-magnetic functional Fe3O4 composites. |
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| Keywords: | magnetic nanoparticles synthesis composites |
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