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Issue 15, 2012
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Gold nanoparticle-doped graphene nanosheets: sub-nanosized gold clusters nucleate and grow at the nitrogen-induced defects on graphene surfaces

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Abstract

We report the theory and synthesis of sub-nanosized gold clusters on reduced graphene oxide (r-GOs). The Au sub-nanoclusters were found to be nucleated and grown at defects of the r-GOs, particularly on nitrogen-induced defects from density functional theory investigation. The resulting Au/r-GOs exhibit an improvement of bulk electrical conductivities and a reduced ratio of the intensity of the D band to that of the G band (ID/IG), compared to the r-GOs without Au nanoclusters. The unique decrease of the ID/IG was demonstrated to be related to the filling of subnano-sized Au clusters on the r-GOs, presumably owing to enhancing the flat geometry of the graphene nanosheets.

Graphical abstract: Gold nanoparticle-doped graphene nanosheets: sub-nanosized gold clusters nucleate and grow at the nitrogen-induced defects on graphene surfaces

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Publication details

The article was received on 28 Nov 2011, accepted on 26 Jan 2012 and first published on 17 Feb 2012


Article type: Paper
DOI: 10.1039/C2JM16195H
J. Mater. Chem., 2012,22, 7130-7135

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    Gold nanoparticle-doped graphene nanosheets: sub-nanosized gold clusters nucleate and grow at the nitrogen-induced defects on graphene surfaces

    H. Y. Koo, H. Lee, Y. Noh, E. Lee, Y. Kim and W. S. Choi, J. Mater. Chem., 2012, 22, 7130
    DOI: 10.1039/C2JM16195H

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