Easy synthesis of nitrogen-doped graphene-silver nanoparticle hybrids by thermal treatment of graphite oxide with glycine and silver nitrate

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Nitrogen-doped graphene-silver nanoparticle hybrids were prepared by thermal treatment of graphite oxide (GO) with glycine and silver nitrate at 500 degrees C. Glycine was used to reduce the nitrate ions, resulting in the decomposition of a glycine-nitrate mixture near 200 degrees C. The products of decomposition act as sources for nitrogen doping. The thermal treatment of a mixture of GO, glycine and silver nitrate results in the formation of silver nanoparticles at 100 degrees C, promotes the reduction of GO near 200 degrees C, and generates pyrrolic and pyridinic type nitrogen doping in graphene at 300 and 500 degrees C, respectively. The atomic percentage of nitrogen in as-prepared sample is about 13.5%. This approach opens up a new possibility for the synthesis of nitrogen-doped graphene decorated with various metallic nanoparticies, which could find important applications in the fields of energy storage and conversion devices. (C) 2012 Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2012-11
Language
English
Article Type
Article
Keywords

OXYGEN REDUCTION REACTION; FORMIC-ACID OXIDATION; CATALYST; FILMS; PD; SHEETS; CARBON

Citation

CARBON, v.50, no.14, pp.5148 - 5155

ISSN
0008-6223
DOI
10.1016/j.carbon.2012.06.055
URI
http://hdl.handle.net/10203/98965
Appears in Collection
NE-Journal Papers(저널논문)
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