J. Mater. Sci. Technol. ›› 2014, Vol. 30 ›› Issue (7): 656-660.DOI: 10.1016/j.jmst.2013.12.007

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Preparation and Antibacterial Activity of Three-component NiFe2O4@PANI@Ag Nanocomposite

Kooti M.1, *, Kharazi P.1, Motamedi H.2   

  1. 1. Department of Chemistry, Shahid Chamran University, Ahvaz 61357-43169, Iran
    2. Department of Biology, Shahid Chamran University, Ahvaz 61357-43169, Iran
  • Received:2013-07-18 Online:2014-07-20 Published:2014-07-30
  • Contact: *Corresponding author. Prof., Ph.D.; Tel.: +98 9161115451; Fax: +98 6113331042


A new three-component and magnetically responsive NiFe2O4@PANI@Ag nanocomposite has been fabricated by coating of nickel ferrite, NiFe2O4, nanoparticles with polyaniline (PANI) and subsequent immobilization of silver nanoparticles onto the surface of polyaniline shell. The as-prepared nanocomposite has been characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and vibrating sample magnetometer (VSM). The saturation magnetization of the NiFe2O4 core decreases dramatically after coating with polyaniline and silver nanoparticles, however, the nanocomposite NiFe2O4@PANI@Ag can be still separated from solution media through magnetic decantation. The antibacterial activity of the synthesized nanocomposite was studied and compared with those of naked NiFe2O4, NiFe2O4@PANI and some standard antibacterial drugs.

Key words: Antibacterial activity, Nanocomposite, Core/shell, Ferrite, Magnetic nanoparticles, Silver nanoparticles