Synthesis and characterisation of Ni-doped Fe3O4/polypyrrole magnetic and conducting nanocomposites with core-shell structure
Authors: Ma, J.1; Ji, Y.2; Shen, X.2
Source: Materials Science and Technology, Volume 25, Number 10, October 2009 , pp. 1279-1282(4)
Publisher: Maney Publishing
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Abstract:
Electrical and magnetic function materials have many potential applications. A magnetic and conducting Ni-doped Fe3O4/polypyrrole (PPy) nanocomposite with a core-shell structure was prepared by in situ polymerisation of a pyrrole monomer in an aqueous solution containing a dispersion of Ni-doped Fe3O4 nanoparticles. The structure and properties of Ni-doped Fe3O4/PPy nanocomposites were characterised by X-ray diffraction (XRD), TEM, infrared spectrometry (IR), vibrating sample magnetometry (VSM) and thermogravimetry (TG). The results showed that the Ni-doped Fe3O4 nanoparticles were completely coated by polypyrrole; the resultant Ni-doped Fe3O4/PPy nanocomposites exhibited a good superparamagnetic behaviour and the saturation magnetisation was as high as 25·2 emu g−1 owing to the adoption of Ni-doped Fe3O4 as the magnetic source. In addition, the influences of Ni-doped Fe3O4 content on the electromagnetic properties of resultant nanocomposites were preliminarily investigated.Keywords: NI-DOPED FE3O4; POLYPYRROLE; NANOCOMPOSITE; CONDUCTIVITY; MAGNETISATION; CORE SHELL
Document Type: Research article
DOI: 10.1179/174328408X378898
Affiliations: 1: College of Materials Science and Engineering, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 200051, China; Zhongyuan University of Technology, Zhengzhou 450007, China 2: College of Materials Science and Engineering, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 200051, China
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