Xuan SH, Hao LY, Jiang WQ, Gong XL, Hu Y, Chen ZY (2007a) A facile method to fabricate carbon-encapsulated Fe(3)O(4) core/shell composites. Nanotechnology 18(3). [In English]

Web link: http://dx.doi.org/10.1088/0957-4484/18/3/035602

Keywords:

structured nanoparticles, microspheres, magnetite, immobilization, chemistry, spheres, route, dna

Abstract: One-step synthesis of carbon-encapsulated Fe(3)O(4) core/shell composites is reported. The Fe(3)O(4) cores were formed via the reduction of Fe(3+) by glucose under alkaline conditions obtained by the decomposition of urea. The amorphous carbon shells were carbonized from glucose. A possible formation mechanism for the Fe(3)O(4) @C composite was discussed. In order to characterize these Fe(3)O(4) @C core-shell composites, high-resolution transmission electron microscopy (HR-TEM), x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), x-ray photoelectron spectroscopy (XPS) and a superconducting quantum interference device (SQUID) magnetometer were employed to characterize the sample obtained using the above method.