Preparation of carbon-encapsulated iron nanoparticles by co-carbonization of aromatic heavy oil and ferrocene

Huo, Junping; Song, Huaihe; Chen, Xiaohong

doi:10.1016/j.carbon.2004.08.007

Cited by 86 publications

(54 citation statements)

References 27 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: 71%

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: 71%

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

et al. 2016

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Section: Xrdmentioning

confidence: 99%

“…Peaks appearing at 44.6 • , 65.0 • , and 82.3 • correspond to α-Fe [24], while peaks at 43.6 • , 51.0 • , and 75.1 • are related to γ-Fe (pdf#98-000-0258). Peaks at 24 • and 44.4 • correspond to the carbon (002) and Fe 3 C (013) reflections, respectively [4,24]. In general, as the temperature increased from 700 to 900 • C, the diffraction intensity of α-Fe decreased while the γ-Fe increased, and as the temperature further increased to 1000 • C, the γ-Fe diffraction intensity (2θ = 43.6 • ) decreased, while the Fe 3 C intensity appeared.…”

Section: Xrdmentioning

confidence: 99%

Carbon-Based Nanomaterials from Biopolymer Lignin via Catalytic Thermal Treatment at 700 to 1000 °C

Zhang

Yan

et al. 2018

Polymers

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Abstract:We report the preparation of carbon-based nanomaterials from biopolymer kraft lignin via an iron catalytic thermal treatment process. Both the carbonaceous gases and amorphous carbon (AC) from lignin thermal decomposition were found to have participated in the formation of graphitic-carbon-encapsulated iron nanoparticles (GCEINs). GCEINs originating from carbonaceous gases have thick-walled graphitic-carbon layers (10 to 50) and form at a temperature of 700 • C. By contrast, GCEINs from AC usually have thin-walled graphitic-carbon layers (1 to 3) and form at a temperature of at least 800 • C. Iron catalyst nanoparticles started their phase transition from α-Fe to γ-Fe at 700 • C, and then from γ-Fe to Fe 3 C at 1000 • C. Furthermore, we derived a formula to calculate the maximum number of graphitic-carbon layers formed on iron nanoparticles via the AC dissolution-precipitation mechanism.

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“…There are only few works in scientific literature dedicated to the production of carbon nanomaterials using petroleum fractions-hydrocarbons as raw materials [28] [29].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Carbon Nanotubes Using Azerbaijan’s Oil

Abdullayeva¹,

Huseynov²,

Musayeva³

et al. 2016

AMPC

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Distillate fractions of Azerbaijan's oil-gasoline, jet fuel and diesel were tested as a raw material for producing carbon nanotubes. Aerosol CVD technique was employed at atmospheric and low pressures and ferrocene was used as a catalyst. It is shown that at atmospheric pressures carbon nanotubes were formed only from a gasoline fraction. Lower pressure in the reactor during the synthesis process leads to formation of carbon tubular structure from both petroleum fractions-gasoline and jet fuel. Other modifications of carbon were grown at atmospheric pressure in a case used fraction jet fuel and diesel fraction. MWCNTs with diameters of 35 -65 nm have been grown at lower pressure in the reactor using gasoline fraction. The diameter of the MWNTs grown at atmospheric pressure in the reactor was in the range of 80 -215 nm and the length reached 6 microns after the purification process.

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Preparation of carbon-encapsulated iron nanoparticles by co-carbonization of aromatic heavy oil and ferrocene

Cited by 86 publications

References 27 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

Carbon-Based Nanomaterials from Biopolymer Lignin via Catalytic Thermal Treatment at 700 to 1000 °C

Synthesis of Carbon Nanotubes Using Azerbaijan’s Oil

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