[Langmuir] Pd-on-Au Supra-nanostructures Decorated Graphene Oxide: An Advanced Electrocatalyst for Fuel Cell Application
作者：YZ Tao, A Dandapat, LM Chen, YJ Huang, Y Sasson, ZY Lin, JW Zhang, LH Guo and Tao Chen*
關鍵字：Pd-on-Au Supra-nanostructures, graphene oxide, nanocomposite, electrocatalyst, fuel cell
論文來源：期刊
具體來源：Langmuir, 2016, 32, 8557–8564
發表時間：2016年
We report a very easy and effective
approach for synthesizing unique palladium-on-gold supra-nanostructures (Au@Pd-SprNSs) decorated graphene oxide (GO) nanosheets. The SprNSs comprising Au nanorods as core and a
unique close-packed assembly of tiny anisotropic Pd NPs
as shell, were homogeneously distributed on the GO surface via electrostatic self-assembly. Compared with the traditional one-pot method for synthesis of metal NPs on GO sheets， the size and shape of core-shell Au@Pd SprNSs can be finely controlled and uniformly distributed
on the GO carrier. Interestingly,
this Au@Pd-SprNSs/GO nanocomposite displayed high electrocatalytic activities towards
the oxidation of methanol, ethanol, and formic acid, which can be attributed to
the abundance of intrinsic active sites including high density of atomic steps,
ledges and kinks, Au-Pd hetero-junctions and cooperative action of the two
metals of the SprNSs. Additionally, uniform dispersion of the SprNSs over the GO
nanosheets prevent agglomeration between the SprNSs,
which is of great significance to enhance the long term stability of catalyst . This work will introduce a highly efficient Pd-based nano-electrocatalyst
to be used in fuel cell application.