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Issue 23, 2013
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One-pot synthesis of Au@Pd/graphene nanostructures: electrocatalytic ethanol oxidation for direct alcohol fuel cells (DAFCs)

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Abstract

Surfactant-free bimetallic Au@Pd core-shell NPs on graphene sheets were fabricated from Au, Pd ions and graphene oxide by one-step reduction using ascorbic acid as an eco-friendly reducing agent. Au@Pd NPs with about 7 nm size are evenly distributed on the surface of graphene. The core/shell structures were confirmed with X-ray diffraction (XRD) and High-angle annual dark field scanning transmission microscopy (HAADF-STEM) mapping analysis. Prepared Au@Pd/graphene nanocomposites show an excellent electrocatalytic activity toward ethanol oxidation: If value that was the best for our catalysts is 11.6 A mg−1, which is about 5 times as high as that of the previous catalyst. The data resulted from extremely optimized bimetallic structure of a small Au core and a thin Pd shell. Pd atoms are constantly encouraged by adjacent Au atoms.

Graphical abstract: One-pot synthesis of Au@Pd/graphene nanostructures: electrocatalytic ethanol oxidation for direct alcohol fuel cells (DAFCs)

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Publication details

The article was received on 29 Jan 2013, accepted on 28 Mar 2013 and first published on 02 Apr 2013


Article type: Paper
DOI: 10.1039/C3RA40505B
Citation: RSC Adv., 2013,3, 8864-8870
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    One-pot synthesis of Au@Pd/graphene nanostructures: electrocatalytic ethanol oxidation for direct alcohol fuel cells (DAFCs)

    G. H. Jeong, D. Choi, M. Kang, J. Shin, J. Kang and S. Kim, RSC Adv., 2013, 3, 8864
    DOI: 10.1039/C3RA40505B

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