Preparation of carbon-encapsulated iron nanoparticles in high yield by DC arc discharge and their characterization

Zhang, Fan; Cui, Lan; Lin, Kui; Jin, Fengmin; Wang, Bin; Shi, Shuxiu; Yang, Danlei; Wang, Hui; He, Fang; Chen, Xiaoping; Shen, Chengmin

doi:10.1016/j.jallcom.2012.12.005

Cited by 16 publications

(16 citation statements)

References 40 publications

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“…It was observed that the structures of CEINPs are almost spherical. TEM and HRTEM images are in agreement with reported images of CEINPs core/shell nanostructure in the literature [41][42][43]. The CEINPs sizes were determined from the data obtained by SEM, TEM and HRTEM micrographs using ImageJ (1.50i, National Institute of Health, Bethesda, MD, USA).…”

Section: Resultssupporting

confidence: 83%

Size Control of Carbon Encapsulated Iron Nanoparticles by Arc Discharge Plasma Method

et al. 2016

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Size control of core@shell nanostructures is still a challenge. Carbon encapsulated iron nanoparticles (CEINPs) were synthesized by arc discharge plasma method in this study. CEINPs size can be controlled by varying gas composition, due to change in plasma properties. The morphology and structural features were investigated using scanning electron microscopy, transmission electron microscopy (TEM) and high-resolution TEM. Magnetic properties were studied to confirm the changes in CEINPs size by using superconducting quantum interference device. In order to evaluate the carbon shell protection and ensure the absence of iron oxide, selected area electron diffraction technique, energy-dispersive x-ray spectroscopy and electron energy loss spectroscopy were employed. Moreover, the degree of carbon order-disorder was studied by Raman Spectroscopy. It was concluded that arc discharge method is a suitable technique for precise size control of CEINPs.

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Section: Resultssupporting

confidence: 83%

Size Control of Carbon Encapsulated Iron Nanoparticles by Arc Discharge Plasma Method

et al. 2016

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“…The dark regions in images correspond to Fe nanoparticles, which were not homogeneously spreaded on the light gray materials. Previous researches also have shown that the light gray material should mainly consist of carbon and the black nanoparticles may include iron and its compounds (possibly including iron carbide) [44][45][46]. According to typical references [35], the presence of small iron particles or droplets mainly promotes the nucleation, growth and elongation of the innermost carbon shell to form carbon nanotubes.…”

Section: Tem Analysismentioning

confidence: 99%

Synthesis and modification of carbon nanomaterials via AC arc and dielectric barrier discharge plasma

Sun

Hong

Wang

et al. 2016

Chemical Engineering Journal

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“…Synthesis of iron nanoparticles has been one of the most attractive challenges in the field of magnetic materials due to the large specific surface area and activity. The common methods for their preparation are high-energy ball milling [7] , sputtering [8] , DC arc plasma [9] , evaporation condensation [10] , ultrasonic chemical [11] , sol-gel [12] , and solvothermal [13] . Preparation of high-energy ball milling is easy to introduce impurities and leads to uneven distribution of the particles.…”

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confidence: 99%

Synthesis of Fe Nanoparticles via One-Step Reduction Method

Yang

et al. 2016

Rare Metal Materials and Engineering

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Fe nanoparticles were synthesized via a novel one-step reduction method. The excessive citric acid helps to obtain pure and high crystallinity α-Fe at the appropriate temperature (620 o C). The Fe nanoparticles were characterized by the X-ray diffraction, transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The morphological characterization indicates that the Fe nanoparticles present spherical shape with diameter of 30 nm. The magnetization hysteresis loops reveal the high saturation magnetization (Ms=198.97 A• m 2 /kg) and the good ferromagnetic behavior of the magnetic materials. The one-step reduction method for nanoparticles synthesis has the advantages of controllable, short process, large-scale production, and will be an important method of producing nanoparticles.

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Preparation of carbon-encapsulated iron nanoparticles in high yield by DC arc discharge and their characterization

Cited by 16 publications

References 40 publications

Size Control of Carbon Encapsulated Iron Nanoparticles by Arc Discharge Plasma Method

Size Control of Carbon Encapsulated Iron Nanoparticles by Arc Discharge Plasma Method

Synthesis and modification of carbon nanomaterials via AC arc and dielectric barrier discharge plasma

Synthesis of Fe Nanoparticles via One-Step Reduction Method

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