Controlling carbon nanostructure synthesis in thermal plasma jet: Correlation of process parameters, plasma characteristics, and product morphology

Aissou, Taki; Menneveux, Jérôme; Casteignau, Fanny; Braidy, Nadi; Veilleux, Jocelyn

doi:10.1016/j.carbon.2023.118605

Cited by 4 publications

(1 citation statement)

References 65 publications

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“…Plasma processes to produce carbon nanostructures involve the dissociation of precursors in a controlled atmosphere, followed by the precipitation of carbon atoms that eventually reorganize to form carbon nanostructures. With precise control of process parameters, plasma can have a wide range of applications, including the synthesis of nanomaterials like carbon nanostructures [27,28].…”

Section: Introductionmentioning

confidence: 99%

Carbon nanostructures synthesis by catalyst-free atmospheric pressure plasma jet

Neira-Velázquez,

Ku-Herrera,

Narro-Céspedes

et al. 2024

J. Phys. D: Appl. Phys.

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In this study, carbon nanostructures were synthesized utilizing a warm plasma jet at atmospheric pressure in a continuous and catalyst-free process. The procedure and apparatus were designed and constructed in our laboratory. Plasma was generated with 600 watts of electrical energy, using a high-voltage, high-frequency alternating current power source. The working gas utilized was a propane/butane mixture, with a concentration ratio of 60:40, respectively. A production rate of 300 mg/min of powdered material was achieved, with a particle size between 20 and 100 nm. The product was characterized by FTIR, thermogravimetric analysis, Raman spectroscopy, X-ray diffraction, and transmission electron microscopy. Results show the formation of multilayer carbon nanostructures with a low content of functional groups; the obtained material presented structural defects and amorphous carbon. This work demonstrates that, with adequate control, warm plasma jet discharges can be employed for the synthesis of carbon nanostructures. The process is scalable and can be utilized for hydrocarbon reforming and hydrogen production. However, further studies are needed to improve the quality of the nanostructures and process efficiency. The synthesized material can potentially be used in gas adsorption or in the manufacture of polymeric nanocomposites with enhanced thermal, electrical, and mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Carbon nanostructures synthesis by catalyst-free atmospheric pressure plasma jet

Neira-Velázquez,

Ku-Herrera,

Narro-Céspedes

et al. 2024

J. Phys. D: Appl. Phys.

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Space‐resolved gas temperature of a microwave plasma torch used for hydrogen production via methane pyrolysis

Kreuznacht,

Böke,

von Keudell

2024

Plasma Processes & Polymers

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Pyrolysis of methane is a promising, new, greenhouse gas‐free production method of hydrogen. Here, we present optical emission spectra of a microwave plasma torch operated in an argon–methane mixture. Detailed spatial resolution is achieved by means of Abel inversion. The emission spectra are dominated by dicarbon Swan bands and black body radiation from carbon nanoparticles. Both spectral features are utilized to estimate the gas temperature. In the center of the plasma, gas temperatures of up to 4300 K are reached with large gradients (500 Kmm‐1) in the radial direction. The thermal equilibrium chemistry and the kinetics of methane pyrolysis are analyzed to explain the observed coupling between the local gas temperature and the local emission.

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Synthesis of carbon nanostructures in solid-flame: A review of opportunities and challenges

Nersisyan,

Lee

2024

Carbon

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Controlling carbon nanostructure synthesis in thermal plasma jet: Correlation of process parameters, plasma characteristics, and product morphology

Cited by 4 publications

References 65 publications

Carbon nanostructures synthesis by catalyst-free atmospheric pressure plasma jet

Carbon nanostructures synthesis by catalyst-free atmospheric pressure plasma jet

Space‐resolved gas temperature of a microwave plasma torch used for hydrogen production via methane pyrolysis

Synthesis of carbon nanostructures in solid-flame: A review of opportunities and challenges

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