Functionalization and exfoliation of graphite with low temperature pulse plasma in distilled water

Graphene materials exhibit extraordinary properties, but are difficult to produce. The present work describes the possibility of using a plasma process to exfoliate and functionalize graphite flakes. An impulse plasma phase is generated at a liquid surface to produce chemical species and shock waves...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2022-03, Vol.24 (9), p.5578-5589
Main Authors: Letoffé, Adrien, Cuynet, Stéphane, Noel, Cédric, de Poucques, Ludovic, Royaud, Isabelle, Hérold, Claire, Henrion, Gérard, Ponçot, Marc, Fontana, Sébastien
Format: Article
Language:English
Subjects:
Chemical Sciences
Chemical treatment
Distilled water
Exfoliation
Flakes (defects)
Graphene
Graphite
Liquid surfaces
Low temperature
Material chemistry
Physics
Plasma Physics
Shock waves
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Summary:Graphene materials exhibit extraordinary properties, but are difficult to produce. The present work describes the possibility of using a plasma process to exfoliate and functionalize graphite flakes. An impulse plasma phase is generated at a liquid surface to produce chemical species and shock waves in order to modify the reactive liquid as well as the graphite flakes. With this process, industrial graphite was treated. 20% thickness diminution was observed, and the formation of a random turbostratic structure. The exfoliation occurs with small amount of functionalization of the surface. Even after treatment, the graphite flakes present a low defect density compared with other treated graphite obtained by more conventional chemical treatments. This process is a new way to exfoliate graphite and to produce functionalized graphenic materials.
ISSN:1463-9076
1463-9084
DOI:10.1039/d1cp04826k