High-yield production of graphene by liquid-phase exfoliation of graphite
Yenny Hernandez,Valeria Nicolosi,Mustafa Lotya,Fiona M. Blighe,Zhenyu Sun,Sukanta De,I.T. McGovern,Brendan Holland,Michele T. Byrne,Yurii K. Gun'ko,John J. Boland,Peter Niraj,Georg S. Duesberg,Satheesh Krishnamurthy,Robbie Goodhue,John L. Hutchison,Vittorio Scardaci,Andrea C. Ferrari,Jonathan N. Coleman +18 more
TLDR
Graphene dispersions with concentrations up to approximately 0.01 mg ml(-1), produced by dispersion and exfoliation of graphite in organic solvents such as N-methyl-pyrrolidone are demonstrated.Abstract:
Fully exploiting the properties of graphene will require a method for the mass production of this remarkable material. Two main routes are possible: large-scale growth or large-scale exfoliation. Here, we demonstrate graphene dispersions with concentrations up to approximately 0.01 mg ml(-1), produced by dispersion and exfoliation of graphite in organic solvents such as N-methyl-pyrrolidone. This is possible because the energy required to exfoliate graphene is balanced by the solvent-graphene interaction for solvents whose surface energies match that of graphene. We confirm the presence of individual graphene sheets by Raman spectroscopy, transmission electron microscopy and electron diffraction. Our method results in a monolayer yield of approximately 1 wt%, which could potentially be improved to 7-12 wt% with further processing. The absence of defects or oxides is confirmed by X-ray photoelectron, infrared and Raman spectroscopies. We are able to produce semi-transparent conducting films and conducting composites. Solution processing of graphene opens up a range of potential large-area applications, from device and sensor fabrication to liquid-phase chemistry.read more
Citations
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High yield production and purification of few layer graphene by Gum Arabic assisted physical sonication
TL;DR: A high yield process to produce a few layer graphene with a low defect ratio, maintaining the pristine graphite structure is demonstrated, opening up a scalable avenue for production of cheap graphene.
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Graphene-Based Interfaces Do Not Alter Target Nerve Cells
Alessandra Fabbro,Alessandra Fabbro,Denis Scaini,Denis Scaini,Verónica León,Ester Vázquez,Giada Cellot,G. Privitera,Lucia Lombardi,Felice Torrisi,Flavia Tomarchio,Francesco Bonaccorso,Francesco Bonaccorso,Susanna Bosi,Andrea C. Ferrari,Laura Ballerini,Laura Ballerini,Maurizio Prato,Maurizio Prato +18 more
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Optoelectronic devices based on two-dimensional transition metal dichalcogenides
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Processing of nanostructured polymers and advanced polymeric based nanocomposites
Laura Peponi,Debora Puglia,Luigi Torre,Luca Valentini,Jose Maria Kenny,Jose Maria Kenny,Jose Maria Kenny +6 more
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Graphen, das neue zweidimensionale Nanomaterial
TL;DR: In this paper, the authors discuss Synthese, Charakterisierung, Struktur, and Eigenschaften of Graphen-Doppel-and -Mehrfachschichten.
References
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