Abstract
An electrospinning process was used to fabricate cobalt ferrite (CoFe 2O 4)-embedded polyacrylonitrile (PAN) nanofibers. Oleic acid-modified CoFe 2O 4 nanoparticles were dispersed in the PAN before spinning. The surface morphologies and structures of the nanofibers were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). SEM and TEM observation showed that the average diameter of the CoFe 2O 4/PAN nanofibers was 110 nm, and the magnetic CoFe 2O 4 nanoparticles were embedded in the PAN nanofibers. X-ray photoelectron spectroscopy was used to characterize the CoFe 2O 4/PAN and CoFe 2O 4/carbon nanofibers. Fiber magnetic properties were measured by vibrating sample magnetometry, showing that the saturation magnetization of the CoFe 2O 4/PAN nanofibers was 45 emu/g and that the fibers demonstrated superparamagnetic behavior.
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