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Erschienen in: Journal of Nanoparticle Research 1/2015

01.01.2015 | Research Paper

Magnetite (Fe3O4)-filled carbon nanofibers as electro-conducting/superparamagnetic nanohybrids and their multifunctional polymer composites

verfasst von: Arindam Das, Muhammad Raffi, Constantine Megaridis, Despina Fragouli, Claudia Innocenti, Athanassia Athanassiou

Erschienen in: Journal of Nanoparticle Research | Ausgabe 1/2015

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Abstract

A mild-temperature, nonchemical technique is used to produce a nanohybrid multifunctional (electro-conducting and magnetic) powder material by intercalating iron oxide nanoparticles in large aspect ratio, open-ended, hollow-core carbon nanofibers (CNFs). Single-crystal, superparamagnetic Fe3O4 nanoparticles (10 nm average diameter) filled the CNF internal cavity (diameter <100 nm) after successive steps starting with dispersion of CNFs and magnetite nanoparticles in aqueous or organic solvents, sequencing or combining sonication-assisted capillary imbibition and concentration-driven diffusion, and finally drying at mild temperatures. The influence of several process parameters—such as sonication type and duration, concentration of solids dispersed in solvent, CNF-to-nanoparticle mass ratio, and drying temperature—on intercalation efficiency (evaluated in terms of particle packing in the CNF cavity) was studied using electron microscopy. The magnetic CNF powder was used as a low-concentration filler in poly(methyl methacrylate) to demonstrate thin free-standing polymer films with simultaneous magnetic and electro-conducting properties. Such films could be implemented in sensors, optoelectromagnetic devices, or electromagnetic interference shields.

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Metadaten
Titel
Magnetite (Fe3O4)-filled carbon nanofibers as electro-conducting/superparamagnetic nanohybrids and their multifunctional polymer composites
verfasst von
Arindam Das
Muhammad Raffi
Constantine Megaridis
Despina Fragouli
Claudia Innocenti
Athanassia Athanassiou
Publikationsdatum
01.01.2015
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 1/2015
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-014-2856-6

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