| 纳米Fe3 O4颗粒改性详析 |
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| 引用本文： | 王伟,沈辉.纳米Fe3 O4颗粒改性详析[J].材料科学与工艺,2001,9(4):431-433. |
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| 作者姓名： | 王伟 沈辉 |
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| 作者单位： | 1. 华南理工大学材料学院,
2. 中国科学院广州能源所, |
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| 基金项目： | 中国科学院"百人计划"，广东省自然科学基金，广东省科技厅科研项目，99-019-422288，980503，粤财工[98]278号，，， |
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| 摘 要： | 详细解析了Fe3O4纳米颗粒的改性条件，并对表面活性剂的用量进行了理论估算，实验确定了表面活性剂的用量。研究结果表明：pH值对改性效果影响明显，酸性或强碱性环境对改性均不利；油酸和硬脂酸按一定比例混合使用，可提高改性效果；IR图谱显示了油酸的羧基发生了漂移，表明油酸与纳米Fe3O4粒子间存在化学键结合。
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| 关 键 词： | 纳米Fe3O4颗粒 pH值 表面活性剂 TEM IR 磁性液体 表面改性 纳米磁性材料 |
| 文章编号： | 1005-0299(2001)04-0431-03 |
| 修稿时间： | 2001年2月18日 |
Discussion of modification process of Fe3 O4 nanoparticles |
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| WANG Wei ,SHEN Hui.Discussion of modification process of Fe3 O4 nanoparticles[J].Materials Science and Technology,2001,9(4):431-433. |
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| Authors: | WANG Wei SHEN Hui |
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| Affiliation: | WANG Wei 1,SHEN Hui 2 |
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| Abstract: | This article discusses the modification process of Fe 3O 4 nanoparticles in details. It was shown that the pH value plays an important role in the modification process and the acid or strong basic environments are unbenificial to the modification process.According to these results, mechanism of modification was described, and estimated theoretically the added dosage of surfactant. The modification quality with can be improved when oleic acid and stearic acid are added together. The size and shape of the prepared nanoparticles were examined by TEM analysis IR spectrum shows that there are chemical bends between surfactant molecule and Fe 3O 4 nanoparticles. This work has established the theoretical base of the modification of Fe 3O 4 nanoparticles. |
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| Keywords: | Fe 3O 4 nanoparticles pH value surfactant TEM IR |
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