Structure of microwave plasma-torch discharge during graphene synthesis from ethanol

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Authors

ŠNÍRER Miroslav KUDRLE Vít TOMAN Jozef JAŠEK Ondřej JURMANOVÁ Jana

Year of publication 2021
Type Article in Periodical
Magazine / Source Plasma Sources Science and Technology
MU Faculty or unit

Faculty of Science

Citation
Web https://doi.org/10.1088/1361-6595/abfbea
Doi http://dx.doi.org/10.1088/1361-6595/abfbea
Keywords microwave plasma; surface wave; carbon; graphene; atmospheric pressure plasma; laminar flow; few-layer graphene
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Description Few-layer graphene nanosheets were synthesised from ethanol using a microwave plasma torch. The stability of the discharge permitted us to directly observe and analyse two distinctive structures—a plasma zone and an assembly zone. Important plasma parameters and insights into the chemical processes taking place in these zones were gained using optical emission spectroscopy and digital imaging for a set of experimental conditions. The results of the plasma diagnostics were then correlated with the synthesised material properties, mainly obtained from electron microscopy and Raman spectroscopy.
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