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Growth and Morphology of Graphene on Silicon Carbide Nanoparticles

Published online by Cambridge University Press:  07 June 2012

Dieter M. Gruen ,
Marshall H. Mendelsohn  and
Marquis Kirk
Dieter M. Gruen
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A.
Marshall H. Mendelsohn
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A.
Marquis Kirk
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A.
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Abstract

Catalytic synthesis of graphene occurs when methane reacts with cubic SiC nanopowder at 1000-1200K. The composite, created under relatively mild experimental conditions, consists primarily of 30-40 nm diameter cylinders with aspect ratios near unity whose walls are composed of 10-20 layers of graphene surrounding nano-SiC particles. Sputtering by electron irradiation sequentially removes the graphene shells thus exposing the SiC cores. Electron as well as X-ray diffraction studies reveal the highly crystalline nature of the graphene shells which constitute 90 mol% of the composites. Raman data support a model involving growth of graphene on carbon rather than on silicon terminated SiC.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1411: Symposium EE – Self Organization and Nanoscale Pattern Formation , 2012 , mrsf11-1411-ee08-07
Copyright
Copyright © Materials Research Society 2012

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