Simultaneous reduction, exfoliation and functionalization of graphite oxide into a graphene-platinum nanoparticle hybrid for methanol oxidation

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We developed a single step thermal method to synthesize platinum nanoparticle functionalized graphene sheets (Pt-G) through the thermal treatment of graphite oxide (GO) with platinum acetylacetonate (Pt(acac)(2)). The loading concentration of platinum nanoparticles (Pt NPs) on graphene is about 22.3 wt%. We investigate the Pt NP functionalization and the reduction effects of GO by scanning electron microscopy, transmission electron microscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis and Raman spectroscopy. The results lead to insights into the formation of Pt-G starting from GO upon increasing the temperature. XPS and XRD analysis confirm that the platinum nanoparticle deposition is accompanied by the reduction and exfoliation of GO. Electrochemical studies reveal that Pt-G shows excellent activity and stability towards the methanol oxidation reaction.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2012
Language
English
Article Type
Article
Keywords

FUEL-CELLS; CARBON NANOTUBES; ELECTROOXIDATION; PERFORMANCE; SUPPORT; ELECTROCATALYSTS; NANOCOMPOSITES; TEMPERATURE; NANOSHEETS; SURFACE

Citation

JOURNAL OF MATERIALS CHEMISTRY, v.22, no.14, pp.6953 - 6958

ISSN
0959-9428
DOI
10.1039/c2jm15566d
URI
http://hdl.handle.net/10203/101590
Appears in Collection
NE-Journal Papers(저널논문)
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