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| 论文编号: |
122214O120120136 |
| 第一作者所在部门: |
704组 |
| 中文论文题目: |
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| 英文论文题目: |
Morphology and magnetic properties of α-Fe2O3 particles prepared by octadecylamine-assisted hydrothermal method
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| 论文题目英文: |
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| 作者: |
刘忠
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| 论文出处: |
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| 刊物名称: |
Particuology
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| 年: |
2012
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| 卷: |
10 |
| 期: |
4 |
| 页: |
456-461 |
| 联系作者: |
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| 收录类别: |
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| 影响因子: |
1.423
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| 摘要: |
α-Fe2O3 particles with various morphologies, including micro-doublesphere, tetrakaidecahedron and nanoparticles-aggregated micro-ellipsoid, were successfully synthesized via an octadecylamine-assisted hydrothermal method. The products were characterized by X-ray diffraction (XRD), scanning electron
microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The results indicate that the presence of octadecylamine played a crucial role in morphology evolution by selective crystal adsorption. The protonated octadecylamine increased the pH value that accelerated nucleation, and the
long alkyl groups of octadecylamine acted as an adsorption inhibitor to retard the growth of nanoparticles. The as-prepared α-Fe2O3 particles exhibited higher remanent magnetization and coercivity than other α-Fe2O3 particles of similar size. These properties should be attributed to the superstructure and the shape anisotropy of the synthesized particles. |
| 英文摘要: |
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