Self-assembly of magnetite beads along multiwalled carbon nanotubes via a simple hydrothermal process

Jia, Baoping; Gao, Lian; Sun, Jing

doi:10.1016/j.carbon.2007.03.025

Cited by 154 publications

(108 citation statements)

References 27 publications

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“…The diffraction peak at 26° can be indexed to (002) reflection of the MWCNTs (see the inset of Fig. 4), similar to the result in the literature [28]. All other diffraction peaks can be well indexed to the magnetic cubic structure of Fe 3 O 4 (JCPDS 79-0419) with lattice constants of α=8.396 Å.…”

Section: Resultssupporting

confidence: 81%

“…Among them, the CNTs coated Fe 3 O 4 nanoparticles have attracted much increasing interest because of the excellent magnetic and biocompatible properties, which make them to be applied in electrochemical biosensing [19], biomanipulation [20], targeted drug delivery [21] and contaminant treatment [22]. A few efforts have been devoted to prepare hybrid materials of CNTs and Fe 3 O 4 [23][24][25][26][27][28] , however, surface modification of CNTs and subsequent assembly with synthesized Fe 3 O 4 nanoparticles via covalent or noncovalent bonding is the most common preparation route. For example, Choi et al prepared CNTs/Fe 3 O 4 hybrids based on the physically absorption between the PAAm-Fe 3 O 4 nanoparticles and acids-treated CNTs [23].…”

Section: Introductionmentioning

confidence: 99%

“…And these methods often require complicated and time consuming operations. An alternative promising avenue to prepare CNTs/Fe 3 O 4 hybrids is in-situ synthesis methods such as high-temperature decomposition route [25] and solvothermal method [26][27][28]. However，these research groups often need costly raw materials and/or kinds of organic solvents.…”

Section: Introductionmentioning

confidence: 99%

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Carbon nanotubes/magnetite hybrids prepared by a facile synthesis process and their magnetic properties

Zhang

Natsuki

et al. 2009

Applied Surface Science

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In this paper, a facile synthesis process is proposed to prepare multi-walled carbon nanotubes/magnetite (MWCNTs/Fe 3 O 4 ) hybrids. The process involves two steps: 1) water-soluble CNTs are synthesized by one-pot modification using potassium persulfate (KPS) as oxidant. 2) Fe 3 O 4 is assembled along the treated CNTs by employing a facile hydrothermal process with the presence of hydrazine hydrate as the mineralizer. The treated CNTs can be easily dispersed in aqueous solvent. Moreover, X-ray photoelectron spectroscopy (XPS) analysis reveals that several functional groups such as potassium carboxylate (-COOK), carbonyl (-C=O) and hydroxyl (-C-OH) groups are formed on the nanotube surfaces. The MWCNTs/Fe 3 O 4 hybrids are characterized with respect to crystal structure, morphology, element composition and magnetic property by x-ray diffraction (XRD), transmission electron microscopy (TEM), XPS and superconducting quantum interference device (SQUID) magnetometer. XRD and TEM results show that the Fe 3 O 4 nanoparticles with diameter in the range of 20-60 nm were firmly assembled on the nanotube surface. The magnetic property investigation indicated that the CNTs/Fe 3 O 4 hybrids exhibit a ferromagnetic behavior and possess a saturation magnetization of 32.2 emu/g. Further investigation indicates that the size of assembled Fe 3 O 4 nanoparticles can be turned by varying experiment factors. Moreover, a probable growth mechanism for the preparation of CNTs/Fe 3 O 4 hybrids was discussed.

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Section: Resultssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Carbon nanotubes/magnetite hybrids prepared by a facile synthesis process and their magnetic properties

Zhang

Natsuki

et al. 2009

Applied Surface Science

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“…This allows a lower loading of nanoparticles to be used, thus decreasing the composite cost and likelihood of re-agglomeration. In this paper, two techniques of alignment are discussed: (i) electric field [25,26,37,61]; and (ii) a magnetic field [62][63][64][65][66][67][68][69] alignment.…”

Section: Post-dispersion: Alignment Of Nanoparticlesmentioning

confidence: 99%

“…In the case of a magnetic field, a magnetic (nano) particles has to be bonded/functionalised on the nano-reinforcement to increase the interaction with the field. Several techniques have been developed to functionalise the nanoparticles, for example, using magnetite as magnetic material [67][68][69], which has some advantages as low cost, easy fabrication process, and avoid more oxidation.…”

Section: Alignment By a Magnetic Fieldmentioning

confidence: 99%

Effect of pre and Post-Dispersion on Electro-Thermo-Mechanical Properties of a Graphene Enhanced Epoxy

Poutrel

Wang

et al. 2016

Appl Compos Mater

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Graphene nanoplatelet (GNP) modified epoxy nanocomposites are becoming attractive to aerospace due to possible improvements in their mechanical, electrical and thermal properties at no weight cost. The process of obtaining reliable material systems provides many challenges, especially at larger scale (a volume effect). This paper reports on the main fabrication stages of GNP-based epoxy composites, namely (i) pre-dispersion, (ii) dispersion, and (iii) post-dispersion. Each stage is developed to show the interest and potential it delivers for property enhancement. Chemical modification of GNP is presented; functionalisation by Triton X-100 shows elastic modulus improvements of the epoxy at low particle content (≤3%). The post-dispersion step as an alignment of GNP into the epoxy by an electrical field is discussed. The electrical conductivity is below the simulated percolation threshold and an improvement of the thermal diffusivity of 220% when compared to non-oriented GNP epoxy sample is achieved. The work demonstrates how the addition of functionalised graphene platelets to an epoxy resin will allow it to act as electrical and thermal conductor rather than as insulator

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Chitosan Composites: Preparation and Applications in Removing Water Pollutants

Ganjali

Rezapour²,

Faridbod

et al. 2017

Handbook of Composites From Renewable Materials

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Self-assembly of magnetite beads along multiwalled carbon nanotubes via a simple hydrothermal process

Cited by 154 publications

References 27 publications

Carbon nanotubes/magnetite hybrids prepared by a facile synthesis process and their magnetic properties

Carbon nanotubes/magnetite hybrids prepared by a facile synthesis process and their magnetic properties

Effect of pre and Post-Dispersion on Electro-Thermo-Mechanical Properties of a Graphene Enhanced Epoxy

Chitosan Composites: Preparation and Applications in Removing Water Pollutants

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