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

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 s...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2012-01, Vol.48 (13), p.1877-1879
Main Authors: Shang, Nai Gui, Papakonstantinou, Pagona, Sharma, Surbhi, Lubarsky, Gennady, Li, Meixian, McNeill, David W, Quinn, Aidan J, Zhou, Wuzong, Blackley, Ross
Format: Article
Language:English
Subjects:
Exfoliation
Graphene
Graphite
Graphite - chemistry
Green Chemistry Technology - methods
Ionic liquids
Ionic Liquids - chemistry
Low level
Nanocomposites
Nanomaterials
Nanoparticles - chemistry
Nanostructure
Nanotechnology - methods
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Summary: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.
ISSN:1359-7345
1364-548X
DOI:10.1039/c2cc17185f