| TOMAN, Jozef, Ondřej JAŠEK, Miroslav ŠNÍRER, David PAVLIŇÁK, Zdeněk NAVRÁTIL, Jana JURMANOVÁ, Stanislav CHUDJÁK, František KRČMA, Vít KUDRLE and Jan MICHALIČKA. On the transition of reaction pathway during microwave plasma gas-phase synthesis of graphene nanosheets: From amorphous to highly crystalline structure. Plasma processes and polymers. Weinheim: Wiley-VCH, 2021, vol. 18, No 8, p. "e2100008", 22 pp. ISSN 1612-8850. Available from: https://dx.doi.org/10.1002/ppap.202100008. |
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@article{1781679,
author = {Toman, Jozef and Jašek, Ondřej and Šnírer, Miroslav and Pavliňák, David and Navrátil, Zdeněk and Jurmanová, Jana and Chudják, Stanislav and Krčma, František and Kudrle, Vít and Michalička, Jan},
article_location = {Weinheim},
article_number = {8},
doi = {http://dx.doi.org/10.1002/ppap.202100008},
keywords = {admixture; graphene nanosheets; microwave plasma; nucleation; plasma synthesis},
language = {eng},
issn = {1612-8850},
journal = {Plasma processes and polymers},
title = {On the transition of reaction pathway during microwave plasma gas-phase synthesis of graphene nanosheets: From amorphous to highly crystalline structure},
url = {https://doi.org/10.1002/ppap.202100008},
volume = {18},
year = {2021}
}
TY - JOUR
ID - 1781679
AU - Toman, Jozef - Jašek, Ondřej - Šnírer, Miroslav - Pavliňák, David - Navrátil, Zdeněk - Jurmanová, Jana - Chudják, Stanislav - Krčma, František - Kudrle, Vít - Michalička, Jan
PY - 2021
TI - On the transition of reaction pathway during microwave plasma gas-phase synthesis of graphene nanosheets: From amorphous to highly crystalline structure
JF - Plasma processes and polymers
VL - 18
IS - 8
SP - "e2100008"
EP - "e2100008"
PB - Wiley-VCH
SN - 16128850
KW - admixture
KW - graphene nanosheets
KW - microwave plasma
KW - nucleation
KW - plasma synthesis
UR - https://doi.org/10.1002/ppap.202100008
N2 - Fourier-transform infrared spectroscopy and proton-transfer-reaction–mass spectrometry are used in a complementary way to study gas-phase processes during decomposition of ethanol in a microwave plasma torch. Decomposition products (C, C2 and simple hydrocarbons) reassemble into higher hydrocarbons and graphene nuclei and further grow into graphene nanosheets (GNS). Depending on microwave power, ethanol flow rate and molecular gas admixture, the material structure changes from amorphous to crystalline. The presence of C2n + 1Hy species was found to be responsible for the formation of defects in the GNS structure. O2 and H2 admixtures change the gas temperature axial profile and consequently modify reaction pathways influencing growth and production rate of GNS. Determination of reaction pathway selectivity enables us to predict whether high-quality or defective GNS are produced.
ER -
TOMAN, Jozef, Ondřej JAŠEK, Miroslav ŠNÍRER, David PAVLIŇÁK, Zdeněk NAVRÁTIL, Jana JURMANOVÁ, Stanislav CHUDJÁK, František KRČMA, Vít KUDRLE and Jan MICHALIČKA. On the transition of reaction pathway during microwave plasma gas-phase synthesis of graphene nanosheets: From amorphous to highly crystalline structure. \textit{Plasma processes and polymers}. Weinheim: Wiley-VCH, 2021, vol.~18, No~8, p.~''e2100008'', 22 pp. ISSN~1612-8850. Available from: https://dx.doi.org/10.1002/ppap.202100008.
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