Electrospinning of Fe, Co, and Ni Nanofibers:  Synthesis, Assembly, and Magnetic Properties

Porous metal frameworks offer potentially useful applications for the aerospace, automotive and bio-medical industries. They can be used as electrodes, actuators, or as selective membrane films. The versatility of the physical features (pore size, pore depth, overall porosity and pore surface coverage) as well as the large range of surface chemistries for both metal oxides and pure noble metals offers scope to functionalise metal nano-particles and networks of nano-porous metal structures. As well as traditional routes to producing metal structures, such as metal sintering or foaming, novel high-throughput techniques have recently been investigated. Nanoparticle self-assembly, metal ion reduction and deposition as well as metal alloy de-alloying were identified as sustainable routes to produce large surface areas of such nano-porous metal frameworks. The main limitations of the current fabrication techniques include the difficulty to process stable and homogeneous arrays of nano-scale pores and the control of their morphology due to the high reactivity of nano-structured metal structures. This paper aims at critically reviewing the various fabrication techniques and surface functionalization routes used to produce advanced functional porous metal frameworks. The limitations and advantages of the different fabrication techniques will be discussed in light of the final material properties and targeted applications. Keywordsporous metal frameworks; porous metal fabrication routes; metal surface chemistry; application of metal frameworks; 3

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“…ES has been used to fabricate very thin polymeric [112][113][114] , ceramic 115 and metal fibres 116,117 .…”

Section: Electro-spun Web Fabricationmentioning

confidence: 99%

The fabrication and surface functionalization of porous metal frameworks – a review

Dumée

Bao

et al. 2013

J. Mater. Chem. A

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“…First of all, electrospun magnetic fibers exhibit remarkable properties in terms of large specific surface area and small diameter (50-500 nm) due to the high stretching of magnetically functionalized polymer solutions under the application of electrostatic forces. In MFNs fabrication, polyacrylonitrile (PAN), polystyrene (PS) or polyimide (PI) have been commonly used as polymer matrix, while iron, iron oxide, cobalt, nickel, LiCoO 2 , NiCo 2 O 4 , NiFe 2 O 4 , Fe-FeO core-shell nano particles as magnetic fillers [11,[24][25][26][27][28][29][30][31] thermal and optical response [32][33][34][35][36], but only partial studies about the relationships between elasticity and magnetization in similar systems have been performed [37]. On the other hand, recent studies are confirming the relevance of elastic and magnetic properties coupling for the development of new multifunctional nanocomposite materials to be used as sensors and actuators [38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Electrospun nanofiber tubes with elastomagnetic properties for biomedical use

Guarino¹,

Ausanio²,

Iannotti³

et al. 2018

Express Polym. Lett.

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Abstract.Electrospinning technique has been successfully used to produce composite nanofibers combining magnetic nanoparticles with polymer matrices. Process conditions to assembly nanofibers in tubular systems, as well as their morphological and elastomagnetic properties, have been explored. A volume percentage of magnetic charge close to 30% has been achieved. The optimization of the fabrication method ensures that the particles are completely covered by a thin polymer shell, so safe-guarding bio-compatibility. In particular, the deformation induced by the direct elastomagnetic effect, applying a static or a pulsed magnetic field, has been investigated. Resultant devices exhibit good elastomagnetic stretchability at room temperature-longitudinal relative strain/exciting field ~4·10 -3 /(1.5·10 4 A/m) -, thus suggesting their potential use for applications in biomedical field as magneto-active components, as well as sensors and actuators.

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“…Recently, oxide nanofibers (NFs) have attracted considerable attention as environmentally friendly thermoelectric materials that are distinct from the conventional thermoelectric materials including bismuth-telluride compounds [1][2][3][4]. In relation to the conventional thermoelectric nanomaterials, the advantages of the oxide NFs are derived from sufficient length dimensions that enable real-life oxide-NF applications [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Variations of the Thermoelectric Characteristics of ZnO Nanofibers from the Use of a Thermal Treatment

Park¹,

Cho²,

Lee³

et al. 2016

Transactions on Electrical and Electronic Materials

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In this study, thermal-treatment-derived variations of the thermoelectric characteristics of ZnO nanofibers (NFs) are examined. NFs that were prepared by electrospinning were transformed into n-type ZnO NFs after they were exposed to thermal heating for 30 min at 550℃. For the ZnO NFs, the Seebeck coefficient decreased from -132.1 μV/K to -44.6 μV/K over the heating-time range of 30 min to 120 min, while the electrical conductivity increased from 2.07 × 10 -3 S/ m to 0.18 S/m.

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Electrospinning of Fe, Co, and Ni Nanofibers: Synthesis, Assembly, and Magnetic Properties

Cited by 288 publications

References 52 publications

The fabrication and surface functionalization of porous metal frameworks – a review

The fabrication and surface functionalization of porous metal frameworks – a review

Electrospun nanofiber tubes with elastomagnetic properties for biomedical use

Variations of the Thermoelectric Characteristics of ZnO Nanofibers from the Use of a Thermal Treatment

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