| 添加剂作用下纳米四氧化三铁的制备及性能研究 |
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| 引用本文： | 陈汝芬,程建辉,魏雨.添加剂作用下纳米四氧化三铁的制备及性能研究[J].河北师范大学学报(自然科学版),2012,36(1):54-58,90. |
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| 作者姓名： | 陈汝芬 程建辉 魏雨 |
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| 作者单位： | 河北师范大学化学与材料科学学院,河北石家庄,050024 |
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| 基金项目： | 国家自然科学基金，河北省自然科学基金，河北师范大学一般基金 |
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| 摘 要： | 采用空气氧化法,在可见光作用下制备纳米Fe3O4,探讨羟基化合物单一添加剂、乙醇和EDTA双组分添加剂对Fe3O4粒径及分散性的影响,并对其性能进行分析.结果表明:加入乙醇、乙二醇和聚乙二醇600添加剂,Fe3O4的晶粒度均减小;随乙醇添加剂的增加,所得Fe3O4的晶粒度减小;EDTA的加入也有利于纳米Fe3O4晶粒度的减小;乙醇和EDTA双组分共同添加时可得到分散性较好、晶粒度为10.1 nm的均匀纳米Fe3O4,其在乙醇溶液中的分散稳定性较好.不同晶粒度(36.6~10.1 nm)纳米Fe3O4分别呈现出铁磁性、超顺磁性特征.
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| 关 键 词： | Fe3O4 晶粒度 制备 分散性 磁性 |
Synthesis of Fe3O4 Nanocrystals in the Presence of Additives and Their Properties |
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| CHEN Rufen
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CHENG Jianhui
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WEI Yu.Synthesis of Fe3O4 Nanocrystals in the Presence of Additives and Their Properties[J].Journal of Hebei Normal University,2012,36(1):54-58,90. |
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| Authors: | CHEN Rufen CHENG Jianhui WEI Yu |
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| Institution: | (College of Chemistry and Material Science,Hebei Normal University,Hebei Shijiazhuang 050024,China) |
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| Abstract: | The variable-sized Fe3O4 nanocrystals by air oxidation method under visible light irradiation in the presence of additives were prepared and their properties were discussed.The results showed that adding ethanol,glycol,PEG-600 and EDTA additives could reduce the particle size of Fe3O4.With increasing the concentration of ethanol,the size of Fe3O4 particles decreased.Adding a mixed additive of ethanol and EDTA was favorable for decreasing the size of Fe3O4 nanocrystals and increasing the dispersibility.The Fe3O4 obtained by the joint-action of ethanol and EDTA,with smaller size(10.1 nm),showed higher dispersion stability in ethanol solution.The variable-sized Fe3O4 nanocrystals exhibited different magnetic properties. |
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| Keywords: | Fe3O4 size synthesis dispersibility magnetic property |
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