Research Paper

Surface Modification of Fe3O4 Nanoparticles Prepared in High Temperture Organic Solution by Sodium Oleate

  • DING Jian-Fang ,
  • JIANG Ji-Sen
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  • Department of Physics, Center for Functional Nanomaterials and Devices, East China Normal University, Shanghai 200062, China

Received date: 2006-08-25

  Revised date: 2007-02-10

  Online published: 2007-09-20

Abstract

Sodium oleate was used as surface modification agent to modify Fe3O4 nanoparticles prepared in high temperature organic solution. Fe3O4 nanoparticles were transferred from organic phase to aqueous solution by the van der Waals interaction between the long aliphatic chain of oleate anion and the hydrophobic groups in the surface of Fe3 O4 nanoparticles. Effects of concentration of sodium oleate, pH and temperature on surface modification of Fe3O4 nanoparticles were investigated. Mossbauer spectroscopy, Transmission electron microscopy (TEM) and Fourier transform-infrared (FT-IR) spectroscopy were used to characterize samples before and after modification. The results show that the method is effective in ransferring Fe3O4 nanoparticles from organic phase to aqueous solution. The ratio of Fe3O4 anoparticles transferred from organic phase is as high as 86% and the content of ransferred Fe3O4 nanoparticles in aqueous solution is 10.5mg·mL-1 on condition that the concertration of sodium oleate solution is 3mmol/L, the content of Fe3O4 nanoparticles in n-hexane is 12.28mg·mL-1, pH is 8.6,temperature is 60℃, respectively. The surface modified Fe3O4 nanoparticles with low concentration in aqueous solution can stably disperse in aqueous solution for a long time.

Cite this article

DING Jian-Fang , JIANG Ji-Sen . Surface Modification of Fe3O4 Nanoparticles Prepared in High Temperture Organic Solution by Sodium Oleate[J]. Journal of Inorganic Materials, 2007 , 22(5) : 859 -863 . DOI: 10.3724/SP.J.1077.2007.00859

References

[1] Cui D X, Gao H J. Biotechnol. Prog., 2003, 19: 683--692.
[2] Torchilin V P. Advanced Drug Delivery Reviews, 1995, 17: 75--101.
[3] Devineni D, Blanton C D, Gallo J M. Bioconjugate Chem., 1995, 6: 203--210. [4] Taylor J I, Hust C D, Davies M J. J. Chromatogr A, 2000, 890: 156--166.
[5] Honda H, Kawabe A, Shinkai M, et al. J. Ferment Bioeng, 1998, 86 (2): 191--196.
[6] 甘志锋, 姜继森. 化学进展, 2005, 17 (6): 978--986.
[7] Wang Y, Wong J F, Teng X W. Nano Letters, 2003, 3 (11): 1555--1559.
[8] Jun Y W, Huh Y M, Choi J S. J. Am. Chem. Soc., 2005, 127: 5732--5733.
[9] Euliss L E, Grancharov S G, Brien S O. Nano Letters, 2003, 3 (11): 1489--1493.
[10] Li Z, Chen H, Bao H B. Chemistry of Materials, 2004, 16 (8): 1391--1393.
[11] Park J, An K J, Hwang Y S. Nature Materials, 2004, 3: 891--895.
[12] 马如璋, 吴兵, 李玉璞. 穆斯堡尔谱学手册. 北京: 冶金工业出版社, 1988.369.
[13] 蒋新宇, 周春山, 张俊山. 中南工业大学学报, 2003, 34 (5): 516--520.
[14] 董庆年. 红外光谱法. 北京: 石油化学工业出版社, 1977. 108--111.
[15] 赵振国. 吸附作用应用原理. 北京: 化学工业出版社, 2005. 235.
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