| 油酸包覆Fe3O4纳米粒子的红外光谱研究 |
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| 引用本文： | 余宗宝,吴雪莲,任丽宏,徐志雄,李国斌. 油酸包覆Fe3O4纳米粒子的红外光谱研究[J]. 兵器材料科学与工程, 2008, 31(5): 69-71 |
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| 作者姓名： | 余宗宝 吴雪莲 任丽宏 徐志雄 李国斌 |
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| 作者单位： | 中国兵器科学研究院宁波分院,浙江,宁波,315103;中国兵器科学研究院宁波分院,浙江,宁波,315103;中国兵器科学研究院宁波分院,浙江,宁波,315103;中国兵器科学研究院宁波分院,浙江,宁波,315103;中国兵器科学研究院宁波分院,浙江,宁波,315103 |
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| 摘 要： | 液相共沉积法制备正庚烷基磁性液体,为了研究油酸对纳米粒子的包覆作用,采用红外光谱分别测试Fe3O4纳米粒子、油酸及正庚烷基铁氧体磁性液体。比较其结果得出,油酸通过端羧基与Fe3O4纳米粒子之间的化学反应来实现对其表面包覆,包覆过程没有破坏油酸的非极性链,确保包覆后的油酸具有与非极性载液相容性,此为磁性液体表面活性剂的本质作用。
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| 关 键 词： | 表面活性剂 包覆 磁性液体 纳米粒子 |
Infrared spectroscopic study of Fe3O4, nanoparticles coated by oleic acid |
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| YU Zong-bao,WU Xue-lian,REN Li-hong,XU Zhi-xiong,LI Guo-bin. Infrared spectroscopic study of Fe3O4, nanoparticles coated by oleic acid[J]. Ordnance Material Science and Engineering, 2008, 31(5): 69-71 |
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| Authors: | YU Zong-bao WU Xue-lian REN Li-hong XU Zhi-xiong LI Guo-bin |
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| Abstract: | In order to explore coating mechanism of oleic acid on nano-particles,N-heptane based magnetic fluid was sythesised by co-precipitation ,and studied by Fourier transform infrared ray (FT-IR) spectra, together with oleic acid and Fe3O4 nano-particle. Comparative analysis shows that oleic acid coats Fe3O4 nano-particle through chemical reaction between carboxyl at one end of oleic acid molecule and Fe3O4 without destroying nonpolar chain, which makes sure resolvability of oleic acid-coated Fe3O4 nano-particle into nonpolar solvent. This is the essential function of surfactant in magnetic fluid. |
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| Keywords: | surfactant coating magnetic fluid nano-particles |
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