In situ synthesis of iron oxide nanoparticles in a styrene-divinylbenzene copolymer
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Magnetic iron oxide nanoparticles were prepared by in situ within a sulfonated styrene-divinylbenzene copolymer. The magnetic nanocomposite was characterized by X-ray diffraction, transmission electron microscopy and vibrating sample magnetometry. The size distribution of the nanoparticles was relatively narrow with good distribution within the copolymer. Nearly spherical nanoparticles, 7 nm in diameter, were identified as CoFe2O 4 and had a well-defined crystalline structure. Magnetic measurements revealed that the magnetic nanocomposites are superparamagnetic. © Springer-Verlag 2007.