Magnetic Fe doped ZnO nanofibers obtained by electrospinning

Abstract

We demonstrate structural and room temperature magnetic properties of Fe doped ZnO nanofibers (NFs) obtained by electrospinning followed by calcination. The observed NFs, formed from crystalographically oriented, approximately 4.5 nm particles conglomerates, were approximately 200 nm in diameter. The reported synthesis of room temperature ferromagnetic Fe doped ZnO NFs is both facile and economical, and is therefore suggested as a generic method of fabricating biocompatible magnetic materials. The major substrates selected for the NFs synthesis (Zn, Fe) comprised of relatively low toxicity materials. Incorporating 10% Fe into ZnO does not modify the wurtzite crystal structure of the host material. No evidence of impurity phase was detected by either X-ray or electron diffraction. Magnetometry studies and Magnetic Force Microscopy imaging reveal a local ferromagnetic order that persists up to room temperature. We suggest that the observed phenomenon is either due to a mechanism mediated by presence of oxygen vacancies and/or is related to iron-rich precipitates.

Electrospun poly(3-hexylthiophene)/poly(ethylene oxide)/graphene oxide composite nanofibers: effects of graphene oxide reduction

“…The possibility to produce one‐dimensional (1D) polymer nanomaterials not only opens the door to the fabrication of microscale and nanoscale devices but it also improves the properties of ICPs and increases the applicability of conjugated polymers in all the applications that involve polymer interactions with its environment . The material 1D‐nanostructuration leads to more efficient sensors and solar cells and is a fundamental prerequisite in the production of flexible and wearable devices . In particular, the development of P3HT nanofibers has significant benefits in comparison with film‐casting polymer, because the former technique leads to a highly active surface area.…”

Facile synthesis of core/shell ZnO/ZnS nanofibers by electrospinning and gas-phase sulfidation for biosensor applications

“…40,41 In the first step, the nanofibers were deposited on the substrates to act as a base of the future sensors, which were consecutively calcined at 500 °C for 4 h to obtain the ZnO nanostructures (Fig. 40,41 In the first step, the nanofibers were deposited on the substrates to act as a base of the future sensors, which were consecutively calcined at 500 °C for 4 h to obtain the ZnO nanostructures (Fig.…”

“…ZnO nanofibers were obtained by electrospinning [40][41][42] and calcination. The starting suspension was composed of zinc acetate (C 4 H 6 O 4 Zn×2H 2 O, CHEMPUR) and an aqueous solution of poly(vinyl alcohol) (PVA) (M w = 72 000, POCH).…”

Preparation and characterization of potassium sodium niobate nanofibers by electrospinning

“…Electrospinning enables the production of ceramic nano‐fibers with diameters ranging from tens of nanometers to micrometers using a mixture of polymers, metal alkoxides or inorganic salts . Electrospun fibers are relatively defect‐free at a molecular level, structurally and have a high length‐to‐diameter ratio, enabling the production of high‐mechanical‐performance composite materials.…”

“…It is generally accepted that quantum confinement of electrons by the potential wells of nanometer-sized structures may provide one of the most versatile and potent means to control the electrical, magnetic, optical, and thermoelectric properties of solid state functional materials, according to Xia et al 5 Electrospinning enables the production of ceramic nanofibers with diameters ranging from tens of nanometers to micrometers using a mixture of polymers, metal alkoxides or inorganic salts. 6 Electrospun fibers are relatively defect-free at a molecular level, structurally and have a high length-todiameter ratio, enabling the production of high-mechanicalperformance composite materials. Disadvantages related to electrospinning include, difficulty in controlling the shapes of the fibers and low yields.…”