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Issue 8, 2014
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Highly active Pd and Pd–Au nanoparticles supported on functionalized graphene nanoplatelets for enhanced formic acid oxidation

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Abstract

Pd and Pd–Au nanoparticles supported on poly(diallyldimethylammonium chloride) (PDDA) functionalized graphene nanoplatelets (GNP) have been synthesized by the ethylene glycol reduction method and characterized by transmission electron microscopy (TEM) and electrochemical measurements for formic acid oxidation. TEM analysis shows that the Pd–Au nanoparticles are uniformly distributed on the surface of graphene nanoplatelets with an average particle size of 6.8 nm. The Pd–Au nanoparticles supported on PDDA–xGNP show higher activity for formic acid electro-oxidation than Pd nanoparticles supported on PDDA–xGNP and Pd or Pd–Au supported on traditional Vulcan XC-72 carbon. The higher catalytic activity of Pd–Au/PDDA–xGNP is mainly due to the alloying of Pd with Au. The promotional effect of Au and the absence of continuous Pd sites significantly suppress the poisoning effects of CO, enhancing the catalytic activity for formic acid oxidation and making them promising for direct formic acid fuel cells (DFAFC).

Graphical abstract: Highly active Pd and Pd–Au nanoparticles supported on functionalized graphene nanoplatelets for enhanced formic acid oxidation

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Publication details

The article was received on 20 Sep 2013, accepted on 04 Dec 2013 and first published on 05 Dec 2013


Article type: Paper
DOI: 10.1039/C3RA45262J
RSC Adv., 2014,4, 4028-4033

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    Highly active Pd and Pd–Au nanoparticles supported on functionalized graphene nanoplatelets for enhanced formic acid oxidation

    T. Maiyalagan, X. Wang and A. Manthiram, RSC Adv., 2014, 4, 4028
    DOI: 10.1039/C3RA45262J

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