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Synthesis of ultrathin wrinkle-free PdCu alloy nanosheets for d-band electrons modulating efficient methanol oxidation

Abstract

The synthesis of ultrathin noble-metal-based alloy nanosheets with few-atomic-layer thickness remains a great challenge although they have attracted remarkable attention. Herein, ultrathin wrinkle-free Pd4Cu1 nanosheets with the lateral size of 33.8 nm and thickness of 2.71 nm are successfully prepared by using n-butylamine as a bifunctional agent. The ingenious structure possesses the highest electrochemically active surface area among the reported PdCu nanostructures. The quantum confinement and entrapment effects of Pd4Cu1 nanosheets render the modulation of d-band electrons and weaken the adsorption of poisoning species that enhance the performance of methanol oxidation. The mass activity of the ultrathin wrinkle-free Pd4Cu1 nanosheets is 6.7 times and 4.8 times higher than that of commercial Pd black and Pt black, respectively. This work highlights the important role of designing ultrathin alloy nanosheets in enhancing electrocatalytic performance.

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Publication details

The article was received on 28 Feb 2018, accepted on 10 Apr 2018 and first published on 13 Apr 2018


Article type: Paper
DOI: 10.1039/C8TA01912F
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Synthesis of ultrathin wrinkle-free PdCu alloy nanosheets for d-band electrons modulating efficient methanol oxidation

    J. Fan, S. Yu, K. Qi, C. Liu, L. Zhang, H. Zhang, X. Cui and W. T. Zheng, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA01912F

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