Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (03): 789-794.doi: 10.3866/PKU.WHXB20100245

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles     Next Articles

A Convenient Method to Synthesize Surface Amino-Coated Superparamagnetic Fe3O4 Nanoparticles

LIU Xing-Chen, DANG Yong-Qiang, WU Yu-Qing   

  1. State Key Laboratory of Supramolecular Structure and Material, Jilin University, Changchun 130012, P. R. China
  • Received:2009-08-27 Revised:2009-11-16 Published:2010-03-03
  • Contact: WU Yu-Qing E-mail:yqwu@jlu.edu.cn

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Abstract:

We propose a convenient method to synthesize surface amino-coated magnetic nanoparticles. Fe3O4 nanoparticles with a grain diameter of about 10 nm were synthesized by the chemical co-precipitation of ferrous chloride and ferric chloride. The obtained superparamagnetic nanoparticles were surface-modified with alendronate to introduce an amino group onto their surfaces. The particles were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), vibrating sample magnetometry (VSM), dynamic light scattering (DLS), thermogra-vimetric analysis (TGA), Fourier transforminfrared (FT-IR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The data showed that alendronate was successfully linked to the SPM nanoparticles. These particles are stable for more than 4 weeks without precipitation at pH= 6.3.

Key words: Magnetic nanoparticles, Amino-coated, Alendronate