Journal
ELECTROCHIMICA ACTA
Volume 56, Issue 1, Pages 491-500Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2010.09.021
Keywords
Electrocatalysis; Carbon materials; Gold nanostructures; Oxygen reduction; Glucose oxidation
Categories
Funding
- Natural Science Foundation of China [20773067, 20833006, 20905036]
- Program for New Century Excellent Talents in University [NCET-06-0508]
- Foundation of the Jiangsu Education Committee [09KJA150001, 09KJB150006]
- Priming Scientific Research Foundation for Advanced Talents in Nanjing Normal University [2009103XGQ0064]
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A gold nanoparticles (Au NPs)-graphene nanocomposite (Au-graphene nanocomposite) was prepared by electrochemically depositing Au NPs on the surface of graphene sheets, and characterized by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray powder diffraction (XRD), and electrochemical methods. The morphology and size of the Au NPs could be easily controlled by adjusting the electrodeposition time and the concentration of precursor (AuCl4-). The electrocatalytic activities of the nanocomposites toward oxygen reduction and glucose oxidation were investigated by cyclic voltammetry. The results indicated that the nanocomposites had a higher catalytic activity than the Au NPs or graphene alone, indicating the synergistic effect of graphene and Au NPs. Therefore, this study has provided a general route for fabrication of graphene-based noble metal nanomaterials composite, which could be potential utility to fuel cells and bioelectroanalytical chemistry. (C) 2010 Elsevier Ltd. All rights reserved.
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