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Growth and Morphology of Graphene on Silicon Carbide Nanoparticles
Published online by Cambridge University Press: 07 June 2012
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