Journal
CARBON
Volume 50, Issue 6, Pages 2252-2263Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2012.01.043
Keywords
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Funding
- Romanian National Authority for Scientific Research, CNCS - UEFISCDI [PN-II-ID-PCE-2011-3-0129]
- Arkansas Science & Technology Authority [08-CAT-03]
- U.S. Department of Energy [DE-FG36-06GO86072]
- National Science Foundation [NSF/EPS-1003970]
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We present the successful design and synthesis of few-layer graphenes over an Au/MgO catalytic system by chemical vapor deposition with methane as the carbon source. The resulting structures were composed of a few graphitic layers, and the highest synthesis yield was found to be 62% when the methane flow rate was 120 mL/min. The dimension of the in-plane crystallites was found to increase with the reaction time. A simple purification step was used to remove the MgO support that resulted in graphene sheets decorated with Au nanoparticles. Such an approach makes it possible to synthesize high purity Au-graphene nanostructured composites by using a single reaction step and without the need for additional functionalization or attachment. (C) 2012 Elsevier Ltd. All rights reserved.
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