Fabrication of aligned ferrite nanofibers by magnetic-field-assisted electrospinning coupled with oxygen plasma treatment

摘要

This paper describes a simple and effective approach to fabrication of aligned magnetic ferrite nanofibers by magnetic-field-assisted electrospinning coupled with oxygen plasma treatment. Large and flexible magnetic hybrid membranes of aligned Fe_3O_4/PVP composite nanofibers were fabricated readily by electrospinning mixtures of Fe_3O_4/PVP in a magnetic field. The PVP matrix could be removed either by calcination or by oxygen plasma treatment. Oxygen plasma treatment retained the original crystalline phase of Fe_3O_4, and large inorganic membranes of aligned ferrite nanofibers were obtained. The ferrite nanofibers showed ferromagnetic behaviors, and are promising in flexible magnetic membranes, magnetic separation, drug delivery, and magnetic sensors.