Synthesis of Ultrafine Carbon Black by Pyrolysis of Polymers Using a Direct Current Thermal Plasma Process

Guo, Xiao‐Feng; Kim, Geon-Joong

doi:10.1007/s11090-009-9198-7

Cited by 18 publications

(5 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So far, a number of synthetic protocols, including thermal pyrolysis of organic compounds, [15][16][17] arc-discharge methods, [18][19][20] laser ablation, 21,22 and chemical vapor deposition [23][24][25] have been developed for the preparation of doped carbon nanomaterials with different sizes, shapes, and chemical compositions. Despite their general feasibility, all of these methods typically suffer from several limitations.…”

Section: Introductionmentioning

confidence: 99%

Solid state synthesis of Ru–MC with highly dispersed semi-embedded ruthenium nanoparticles in a porous carbon framework for benzoic acid hydrogenation

Jiang

Lan

Liu

et al. 2016

Catal. Sci. Technol.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Solid state synthesis of Ru–MC with highly dispersed semi-embedded ruthenium nanoparticles in a porous carbon framework for benzoic acid hydrogenation

Jiang

Lan

Liu

et al. 2016

Catal. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…As expected, XRD of the synthesized materials confirmed the presence of graphitized carbon, more prominently for the relatively high-pressure samples of Ag-C7 and Ag-C8, for which the atomic interplanar distance d 002 was estimated as 3.36 Å (figure 3). There are several reports available on the controlled synthesis of carbon nanosheets, where the parameter d 002 was used to quantify their level of crystallinity; the value reported in this current report is one of the smallest ever achieved by a thermal-plasma method [25,32]. Standard XRD peaks of silver were also observed.…”

Section: Nanocomposite Synthesized With An Injection Section Made Of ...mentioning

confidence: 66%

Single-step, DC thermal plasma-assisted synthesis of Ag-C nanocomposites with less than 10 nm sizes for antibacterial applications

Sabavath¹,

Rahman²,

Sarmah³

et al. 2020

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

A single-step, thermal plasma-assisted technique is reported for size-controlled synthesis of silver-carbon (Ag-C) nanocomposites, to be used for antibacterial applications. Silver nanoparticles of sizes less than 10 nm can directly penetrate into the core of the bacteria, while stiff, nanocrystalline carbon may rupture the microorganisms with their sharp edges. Experiments demonstrated that silver nanoparticles nucleate anchoring tightly on carbon sheets, which can inhibit their aggregation and growth in size and becomes more effective as crystallinity of the carbon enhances further. Nanocomposite samples were synthesized using a hot graphite nozzle and with variation of ambient pressure in the sample collection chamber. The Ag-C sample synthesized at 190 mbar chamber pressure demonstrated the best antibacterial activities. The zone of inhibition was measured for this sample as 18 mm for the gram-positive E. hirae and 15 mm for the gram-negative E. coli bacteria at their corresponding minimum inhibitory values of 0.54 mg ml−1 and 0.9 mg ml−1 respectively. The crystallinity of the carbon nanosheets was measured to be the best for this particular sample and the average size of the silver nanoparticles remaining entangled on them was measured as 4.6 nm, which to our knowledge is the smallest ever synthesized by a plasma-assisted method. The gas temperature at the injection section was measured using the C2 Swan band system, (0, 0) vibrational transition located at 516.5 nm, which confirms temperature enhanced substantially in presence of the graphite nozzle, which had led to the enhanced material crystallinity and synthesis of particles with the smallest sizes.

show abstract

“…The solid product from LLDPE non-catalytic pyrolysis contains carbon black, which can be substituted for any commercial carbon black. However, the yield of carbon black from polymer pyrolysis with plasma treatment reached only 81%-82% [46]. For this reason, it was assumed that 1 kg of pyrolytic solid product can count as 0.5 kg of commercial carbon black.…”

Section: Avoided Products From Valuable Productsmentioning

confidence: 99%

Catalytic pyrolysis of linear low-density polyethylene using recycled coal ash: Kinetic study and environmental evaluation

Lai

Meng

Yan

et al. 2021

Korean J. Chem. Eng.

View full text Add to dashboard Cite

Catalytic pyrolysis offers a sustainable route to convert plastic wastes into fuel. We investigated the catalytic performance of coal ash (fly and bottom ash) at blending ratio of 5 wt%, and 15 wt% during pyrolysis of linear lowdensity polyethylene (LLDPE). The influence on activation energy and oil was characterized via thermogravimetric analyzer (TGA) and gas chromatography-mass spectrometry (GC-MS). Results have shown that 15 wt% bottom ash exhibited higher catalytic activity. The activation energy estimated by Coats-Redfern method decreased from 458.7 kJ•mol  1 to 437.8 kJ•mol  1 , while the alicyclic hydrocarbon yield increased from 5.97% to 32.09%. This implies that CaO, which is abundant in bottom ash, could promote the conversion of LLDPE. Furthermore, a cradle-to-factory gate life cycle assessment was performed to investigate three scenarios (non-catalytic pyrolysis, 15 wt% fly ash, and 15 wt% bottom ash) of LLDPE conversion strategies via a normalization and weighting approach. It was found that LLDPE pyrolysis with 15 wt% bottom ash also showed the lowest normalized score of 2.83, implying the lowest environmental impact. This work has demonstrated that the recycling of coal ash, particularly bottom ash, as catalysts for LLDPE pyrolysis is effective.

show abstract

Synthesis of Ultrafine Carbon Black by Pyrolysis of Polymers Using a Direct Current Thermal Plasma Process

Cited by 18 publications

References 25 publications

Solid state synthesis of Ru–MC with highly dispersed semi-embedded ruthenium nanoparticles in a porous carbon framework for benzoic acid hydrogenation

Solid state synthesis of Ru–MC with highly dispersed semi-embedded ruthenium nanoparticles in a porous carbon framework for benzoic acid hydrogenation

Single-step, DC thermal plasma-assisted synthesis of Ag-C nanocomposites with less than 10 nm sizes for antibacterial applications

Catalytic pyrolysis of linear low-density polyethylene using recycled coal ash: Kinetic study and environmental evaluation

Contact Info

Product

Resources

About