Controllable selective exfoliation of high-quality graphene nanosheets and nanodots by ionic liquid assisted grinding

Details Controllable selective exfoliation of high-quality graphene nanosheets and nanodots by ionic liquid assisted grinding Controllable selective exfoliation of high-quality graphene nanosheets and nanodots by ionic liquid assisted grinding

2012-01-13

arxiv.org/abs/1201.2795v1

Chemical Communications 2012, 48 (13), 1877 - 1879

Physics

Condensed Matter

Materials Science

* Corresponding authors: p.papakonstantinou@ulster.ac.uk; ngshang@hotmail.com

Scientific paper

10.1039/C2CC17185F

Bulk quantities of graphene nanosheets and nanodots have been selectively fabricated by mechanical grinding exfoliation of natural graphite in a small quantity of ionic liquids. The resulting graphene sheets and dots are solvent free with low levels of naturally absorbed oxygen, inherited from the starting graphite. The sheets are only two to five layers thick. The graphene nanodots have diameters in the range of 9-29 nm and heights in the range of 1-16 nm, which can be controlled by changing the processing time.

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