| 不同形貌Fe3O4纳米粒子的氧化沉淀法制备与表征 |
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| 引用本文： | 于文广,张同来,乔小晶,张建国,杨利.不同形貌Fe3O4纳米粒子的氧化沉淀法制备与表征[J].无机化学学报,2006,22(7):1263-1268. |
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| 作者姓名： | 于文广 张同来 乔小晶 张建国 杨利 |
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| 作者单位： | 爆炸科学与技术国家重点实验室,北京理工大学,北京,100081 |
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| 摘 要： | 用一种方法成功合成出了球体、四方体、八面体、不规则多面体、三角形和不规则颗粒等六种具有不同形貌的Fe3O4纳米粒子，通过扫描电子显微镜(SEM)表征了粒子形貌。试样经过X-射线衍射(XRD)表征具有尖晶石结构，且结晶良好。经震动样品磁强计(VSM)测定，各种形貌的Fe3O4纳米粒子都具有良好的磁性，其中八面体形貌的Fe3O4纳米粒子的饱和磁化强度达到86.56 emu·g-1，剩磁为10.64 emu·g-1，矫顽力为138 Oe。讨论了不同形貌的Fe3O4纳米粒子的形成机制，得出了晶核的生长环境对纳米粒子的形貌有重要影响的结论。
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| 关 键 词： | 晶体生长 磁性材料 Fe3O4 纳米粒子 形貌 机制 |
| 文章编号： | 1001-4861(2006)07-1263-06 |
| 收稿时间： | 2006-03-15 |
| 修稿时间： | 2006-05-22 |
Preparation and Characterization of Magnetite Nanoparticles with Various Morphologies by One Method |
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| YU Wen-Guang,ZHANG Tong-Lai,QIAO Xiao-Jing,ZHANG Jian-Guo and YANG Li.Preparation and Characterization of Magnetite Nanoparticles with Various Morphologies by One Method[J].Chinese Journal of Inorganic Chemistry,2006,22(7):1263-1268. |
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| Authors: | YU Wen-Guang ZHANG Tong-Lai QIAO Xiao-Jing ZHANG Jian-Guo and YANG Li |
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| Institution: | State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081 and State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081 |
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| Abstract: | Magnetite nanoparticles with various morphologies as sphere, cube, regular octahedron, irregular polyhedron, triangle and irregular grains have been successfully synthesized by using only one preparation method with FeSO4·7H2O and NaOH as starting materials. X-ray diffraction (XRD), scanning electron microscope (SEM) and vibrating sample magnetometer (VSM) techniques were used to characterize the as-synthesized magnetite nanoparticles for their structure, shape and magnetic properties, respectively. The results show that all the as-synthesized magnetite nanoparticles, are well crystallized and can be indexed into spinel structure. The saturation magnetization of octahedral magnetite nanoparticles is 86.56 emu·g-1; the remanence magnetization and coercive forces of octahedral magnetite nanoparticles are 10.64 emu·g-1, 138 Oe, respectively. The possible mechanism for the formation of magnetite nanoparticles with various morphologies is suggested. |
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| Keywords: | crystal growth magnetic materials magnetite nanoparticles morphology mechanism |
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