Nanosize carbon products formed in microwave discharge in liquid alkanes

Carbon‐containing nanosize solid‐state phase have been produced in the atmospheric pressure microwave (MW) plasma ignited in the gas bubbles in liquid alkanes CnH2n+2 (n = 7, 8, 10, 15, 16). Gas bubbles are generated by flow of argon. According to SEM data, the solid‐state products are represented b...

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Bibliographic Details
Published in:Plasma processes and polymers 2017-09, Vol.14 (9), p.n/a
Main Authors: Averin, Konstantin A., Lebedev, Yuri A., Shchegolikhin, Alexander N., Yablokov, Michael Yu
Format: Article
Language:English
Subjects:
Alkanes
Atmospheric pressure
Bubbles
Carbon
Damage
damaged graphene
discharges in liquid hydrocarbons
Fragments
Microwave discharge
Nanoparticles
NMR
Nuclear magnetic resonance
Raman spectra
solid carbon containing products
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Summary:Carbon‐containing nanosize solid‐state phase have been produced in the atmospheric pressure microwave (MW) plasma ignited in the gas bubbles in liquid alkanes CnH2n+2 (n = 7, 8, 10, 15, 16). Gas bubbles are generated by flow of argon. According to SEM data, the solid‐state products are represented by particles having dimensions in the range of 100–200 nm. Raman spectra of the sooty‐like unpurified solid products permit to categorize them as sp3+sp2 mixed forms of carbon comprising mainly an “damaged grapheme” along with a “few‐layer” graphite nanoparticles. NMR spectra of the solid products show strong aromatization and formation of various unsaturated molecular fragments. FTIR‐ATR spectra indicate that the carbonaceous nanoparticles are contaminated with minor amounts of different hydrocarbon residues and oxidized species. Microwave plasma in liquid dielectrics is new area of plasma processing. In this paper, we focus on characterization of carbon nanoparticles produced in microwave discharge in liquid alkanes. It was shown that nanoparticles can be classified as the damaged graphene.
ISSN:1612-8850
1612-8869
DOI:10.1002/ppap.201600227