Manipulation of carbon nanotube magnetism with metal-rich iron nanoparticles

Brack, Narelle; Kappen, Peter; Spencer, Michelle J. S.; Herries, Andy I.R.; Rider, Andrew N.

doi:10.1039/c5tc03704b

Cited by 7 publications

(20 citation statements)

References 78 publications

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“…XPS analysis and depth profiling was performed as previously detailed using identical instrumental conditions [32], with details provided in S2a and S2b of the supplementary material (available online at stacks.iop.org/NANO/33/ 025704/mmedia), respectively. X-ray absorption spectra were acquired at room temperature at the Fe K absorption edge using a Si (111) double-crystal monochromator on the Wiggler Beamline at the Australian Synchrotron.…”

Section: Spectroscopic Analysesmentioning

confidence: 99%

“…X-ray absorption spectra were acquired at room temperature at the Fe K absorption edge using a Si (111) double-crystal monochromator on the Wiggler Beamline at the Australian Synchrotron. Data was collected in either fluorescence or transmission mode using experimental conditions previously reported [32]. Details are provided in S2c.…”

Section: Spectroscopic Analysesmentioning

confidence: 99%

“…The ozone treatment provides a scalable, controllable and environmentally friendly approach and removes the use of strong oxidising agents. This method has been successfully applied to oxygen functionalisation of CNTs for EPD and GNPs for ink jet printing applications [29] and as Fe nucleation sites for the production of Fe-CNT nanomaterials [32,33]. It is critical that there exists a strong chemical attachment between the ZV iron and graphene to ensure robust materials for use in the harsh application environments expected.…”

Section: Introductionmentioning

confidence: 99%

“…The iron is electrodeposited onto the GNPs using an electrodynamic pulsed method in a low oxygen environment to produce Fe nanoparticles (Fe NPs) with a ZV character. This simple, economic and scalable process has been applied to USO treated CNTs, previously, to produce ferromagnetic carbon nanomaterials with properties ranging between isolated NPs and fine-grain films [32,33]. The chemical and structural properties of the ZV Fe-coated GNPs are investigated by x-ray absorption spectroscopy (XAS), scanning and transmission electron microscopy (SEM/TEM) and x-ray photoelectron spectroscopy (XPS).…”

Section: Introductionmentioning

confidence: 99%

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Zero valence iron nanocube decoration of graphitic nanoplatelets

Brack¹,

Spencer²,

Mapleback³

et al. 2021

Nanotechnology

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Graphitic nanoplatelets (GNPs) have been treated using an ultrasonicated ozonolysis procedure to produce stable aqueous dispersions that facilitate deposition of thin films using electrophoretic deposition. The thin GNP films were then coated with zero valence (ZV) iron nanocubes using a pulsed electrodeposition technique. Characterization of the ZV-iron coating with deposition time revealed that the changing magnetic character of the ferromagnetic-graphitic hybrid material was related to the nucleation density and growth of the ZV-iron nanocubes. Density functional theory calculations show a preference for ZV-iron adsorption at the oxygen sites of the GNPs, with ZV-iron displacement of oxygen groups favored in some configurations. Transmission electron microscopy studies confirm ZV-iron growth nucleates preferentially at the graphite nanoplatelet edges and the hybrid material magnetism is affected by the convergent crystalline grain boundaries formed between adjacent ZV-iron nanocubes.

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Section: Spectroscopic Analysesmentioning

confidence: 99%

Section: Spectroscopic Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Zero valence iron nanocube decoration of graphitic nanoplatelets

Brack¹,

Spencer²,

Mapleback³

et al. 2021

Nanotechnology

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“…By subsequent carbonization, iron containing CNTs formed in AAO channels and the MCNTs can be gained by dissolving AAO using hydrochloric acid. Using AAO template in order to synthesis, MCNT attracts more attentions by time [74]. Furthermore, polymer and surfactant are used as a structure-directing agent in soft template method, which have been under tremendous attention during last years.…”

Section: Template-based Synthesismentioning

confidence: 99%

Magnetic carbon nanotubes: preparation, physical properties, and applications in biomedicine

Samadishadlou

Farshbaf²,

Annabi

et al. 2017

Artificial Cells, Nanomedicine, and Biotechnology

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Magnetic carbon nanotubes (MCNTs) have been widely studied for their potential applications in medicine, diagnosis, cell biology, analytical chemistry, and environmental technology. Introduction of MCNTs paved the way for the emergence of new approaches in nanobiotechnology and biomedicine as a result of their multifarious properties embedded within either the carbon nanotubes (CNTs) or magnetic parts. Numerous preparation techniques exists for functionalizing CNTs with magnetic nanoparticles, and these versatile strategies lay the ground for the generation of novel and versatile systems which are applicable to many industries and biological areas. Here, we review and discuss the recent papers dealing with MCNTs and their application in biomedical and industrial fields.

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