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Issue 10, 2011
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High concentration few-layer graphene sheets obtained by liquid phase exfoliation of graphite in ionic liquid

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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, which exhibits Tyndall effect, was characterized by Raman and UV spectroscopies, and atomic force and field emission electron microscopies. It is noteworthy that, by gravimetric analysis, a graphene concentration as high as 5.33 mg ml−1 was determined, which is the highest value reported so far in any solvent.

Graphical abstract: High concentration few-layer graphene sheets obtained by liquid phase exfoliation of graphite in ionic liquid

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Publication details

The article was received on 29 Jul 2010, accepted on 25 Nov 2010 and first published on 20 Dec 2010


Article type: Paper
DOI: 10.1039/C0JM02461A
Citation: J. Mater. Chem., 2011,21, 3428-3431
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    High concentration few-layer graphene sheets obtained by liquid phase exfoliation of graphite in ionic liquid

    D. Nuvoli, L. Valentini, V. Alzari, S. Scognamillo, S. B. Bon, M. Piccinini, J. Illescas and A. Mariani, J. Mater. Chem., 2011, 21, 3428
    DOI: 10.1039/C0JM02461A

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