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Porous octahedral PdCu nanocages as highly efficient electrocatalysts for the methanol oxidation reaction

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Abstract

Porous octahedral PdCu alloy nanocages are prepared by templating against Cu2O together with the disproportionation and displacement reactions at room temperature. Through tuning the molar ratios of the Pd/Cu precursors (PdCl42−/Cu2O), the morphology and the electrocatalysis of the octahedral PdCu nanocages can be controlled. The PdCu-5 (Pd/Cu precursor ratio of 1 : 5) nanocages exhibit superior electrocatalytic activity (1090 mA mgPd−1) towards the methanol oxidation reaction, 2.9 times higher than that of the commercial Pd/C catalyst, with remarkable durability. The combined characterization by SEM, TEM, XRD and XPS demonstrated that the excellent performance and durability of the PdCu-5 nanocages can be ascribed to their excellent hollow and porous structures as well as the electronic effect between the noble metal Pd and the cheap metal Cu. Herein, this kind of nanomaterial with novel cage-like structures is a promising catalyst for direct methanol fuel cells (DMFCs).

Graphical abstract: Porous octahedral PdCu nanocages as highly efficient electrocatalysts for the methanol oxidation reaction

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Publication details

The article was received on 07 Sep 2017, accepted on 12 Dec 2017 and first published on 12 Dec 2017


Article type: Paper
DOI: 10.1039/C7TA07879J
Citation: J. Mater. Chem. A, 2018, Advance Article
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    Porous octahedral PdCu nanocages as highly efficient electrocatalysts for the methanol oxidation reaction

    J. Sheng, J. Kang, H. Ye, J. Xie, B. Zhao, X. Fu, Y. Yu, R. Sun and C. Wong, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C7TA07879J

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