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arXiv · 1010.2859

High Concentration Few-layer Graphene Sheets Obtained by Liquid Phase Exfoliation of Graphite in Ionic Liquid

Daniele Nuvoli·Luca Valentini·Valeria Alzari·Sergio Scognamillo·Silvia Bittolo Bon·Massimo Piccinini·Javier Illescas·Alberto Mariani
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Abstract

In the present work, the use of a commercial ionic liquid as a convenient solvent medium for graphite exfoliation in mild and easy conditions without any chemical modification is presented. To confirm the presence of few layer graphene, its dispersion was charachterized by Raman spectroscopy, atomic force miscroscopy and field emission electron microscopy. From the UV-Vis characterization, a graphene concentration as high as 2.543 mg/ml was obtained, which is the highest value reported so far in any solvent.

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Daniele Nuvoli, Luca Valentini, Valeria Alzari, Sergio Scognamillo, Silvia Bittolo Bon, Massimo Piccinini, Javier Illescas, Alberto Mariani. 2010-10-14. High Concentration Few-layer Graphene Sheets Obtained by Liquid Phase Exfoliation of Graphite in Ionic Liquid. https://doi.org/10.1039/c0jm02461a

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