Synthesis and characteristics of carbon encapsulated magnetic nanoparticles produced by a hydrothermal reaction

Wang, Zhifei; Xiao, Pengfeng; He, Nongyue

doi:10.1016/j.carbon.2006.06.026

Cited by 112 publications

(48 citation statements)

References 16 publications

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“…To date, several methods have been proposed to prepare various HCS composites decorated with different nanomaterials and morphologies, [10][11][12] including the template-assisted methods, [13,14] precursor-controlled carbonisation, [15] solvo/thermal methods, [16] self-assembly by using soft templates, [17] pyrolysis, [18] and chemical vapour deposition with a relevant catalyst. [19] For this purpose, polymeric materials, i.e., conducting polymers (CPs), have been commonly used as carbon precursors.…”

Section: Introductionmentioning

confidence: 99%

Microwave energy-based synthesis and characterisation of hollow carbon nanospheres decorated with carbon nanotubes or metal oxide nanowires

Poyraz

2018

GJPAAS

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Hollow carbon nanospheres (HCNSs), with either carbon nanotube (CNT) or metal oxide nanowire (MONW) decoration on their surface, were synthesised as building materials with a great potential for the next generation advanced applications. A well-established, polymeric latex NS synthesis method and a simply modified version of a microwave (MW) energy-based carbonisation approach, i.e. Poptube, were systematically combined to obtain these HCNSs. Through this simple, facile, affordable and easily scalable 'combined synthesis method', it was managed to successfully produce HCNSs with an unique

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Section: Introductionmentioning

confidence: 99%

Microwave energy-based synthesis and characterisation of hollow carbon nanospheres decorated with carbon nanotubes or metal oxide nanowires

Poyraz

2018

GJPAAS

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“…These particles are much more stable than pure magnetic particles since the shell not only protects the magnetic core of environmental degradation but also inhibits the agglomeration by Van Der Waals forces [73]. Unlike traditional adsorbent materials, Fe 3 O 4 @C core-shell does not require a costly step for its removal after the adsorption process, requiring only a magnetic field.…”

Section: Hybrids Methodsmentioning

confidence: 99%

“…Wang et al [73] synthesized carbon encapsulated magnetic nanoparticles by heating an aqueous glucose solution containing Fe@ Au (Au coated Fe nanoparticles) or Ni nanoparticles at 160ºC for 2 h. They concluded that, by using this method, it was possible to obtain nanoparticles with uniform Fe/Au soaked carbon spheres with an average particle size of 200 nm. Recently, Fe 3 O 4 @C core-shell has been developed at room temperature by applying a hydrothermal process consisting of three steps: at first, hematite (α-Fe 2 O 3 ) nano rods were obtained; α-Fe 2 O 3 @C core-shell nano rods were subsequently fabricated using glucose as a carbon source by a hydrothermal method; finally, Fe 3 O 4 @C core-shell were synthesized after an annealing treatment of the product from the previous stage under a flow of a Ar/H 2 mixture Figure 6: A precipitation stage of the oxide in alkali medium followed by a carbon coating.…”

Section: Hydrothermal Coprecipitationmentioning

confidence: 99%

Synthesis and Potential Adsorption of Fe3O4@C Core-Shell Nanoparticles for to Removal of Pollutants in Aqueous Solutions: A Brief Review.

Mm¹,

Macuvele²,

Müller³

et al. 2017

J Adv Chem Eng

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Journal of Advanced Chemical EngineeringLima et al., J Adv Chem Eng 2017, 7:1 DOI: 10.4172/2090 Volume AbstractCore-shell Fe 3 O 4 @C nanoparticles consist of a magnetic core and carbon coating, and exhibit high adsorptive capacity, easy magnetic separation and reusability. Due to these properties, core-shell Fe 3 O 4 @C nanoparticles have great potential application in adsorption, separation and wastewater treatment. Magnetic separation based on the super paramagnetic Fe 3 O 4 has received considerable attention and is widely used for the removal of dye, oil pharmaceuticals and metals from water due to its high efficiency and economic viability. Therefore, the main characteristics of the core-shell Fe 3 O 4 @C nanoparticles, the different types of synthesis, as well as the main applications for the removal of water pollutants were reviewed. In this brief review, an overview of the basic properties of the Fe 3 O 4 @C core-shell nanoparticles are given, and the most important and more frequently used methods for the synthesis of Fe 3 O 4 @C core-shell nanoparticles have been summarized along with the description of its adsorbent application potential.

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“…The heating and decomposition of an aqueous solution of glucose is a process to synthesize carbon-encapsulated magnetic nanoparticles, e.g. carbon coating from glucose and nanomaterials containing Ni or Fe covered by Au [10] and Fe x O y that were used as catalysts in the Fischer-Tropsch synthesis [11].…”

Section: Introductionmentioning

confidence: 99%

Mössbauer study of carbon coated iron magnetic nanoparticles produced by simultaneous reduction/pyrolysis

et al. 2011

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Magnetic iron nanoparticles immersed in a carbon matrix were produced by a combined process of controlled dispersion of Fe 3+ ions in sucrose, thermal decomposition with simultaneous reduction of iron cores and the formation of the porous carbonaceous matrix. The materials were prepared with iron contents of 1, 4 and 8 in %wt in sucrose and heated at 400, 600 and 800 • . The samples were analyzed by XRD, Mössbauer spectroscopy, magnetization measurements, TG, SEM and TEM. The materials prepared at 400 • are composed essentially of Fe 3 O 4 particles and carbon, while treatments at higher temperatures, e.g. 600 and 800 • produced as main phases Fe 0 and Fe 3 C. The Mössbauer spectra of samples heated at 400 • showed two sextets characteristic of a magnetite phase and other contributions compatible with Fe 3+ and Fe 2+ phases in a carbonaceous matrix. Samples treated at temperatures above 600 • showed the presence of metallic iron with concentrations between 16-43%. The samples heated at 800 • produced higher amounts of Fe 3 C (between 20% and 58%). SEM showed for the iron 8% sample treated at 600-800 • C particle sizes smaller than 50 nm. Due to the presence of Fe 0 particles in the carbonaceous porous matrix the materials have great potential for application as magnetic adsorbents.

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Synthesis and characteristics of carbon encapsulated magnetic nanoparticles produced by a hydrothermal reaction

Cited by 112 publications

References 16 publications

Microwave energy-based synthesis and characterisation of hollow carbon nanospheres decorated with carbon nanotubes or metal oxide nanowires

Microwave energy-based synthesis and characterisation of hollow carbon nanospheres decorated with carbon nanotubes or metal oxide nanowires

Synthesis and Potential Adsorption of Fe3O4@C Core-Shell Nanoparticles for to Removal of Pollutants in Aqueous Solutions: A Brief Review.

Mössbauer study of carbon coated iron magnetic nanoparticles produced by simultaneous reduction/pyrolysis

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