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Facile synthesis of Pd@Ru nanoplates with controlled thickness as efficient catalysts for hydrogen evolution reaction

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Abstract

Ru-based nanoplates have received considerable attention in recent years because of their attractive catalytic properties originating from their unique two-dimensional structure. However, the synthesis of Ru-based nanoplates, especially for the thickness control at the atomic level, still remains challenging. Here we report the synthesis of Pd@Ru core–shell nanoplates, in which Ru atoms exhibit a face-centered cubic (fcc) structure rather than a hexagonal close-packed (hcp) structure of bulk Ru. The thickness of Pd@Ru nanoplates and even the crystal structure of Ru shells can be tuned by simply varying the amount of the Ru precursor. The Pd@Ru nanoplates first exhibit a remarkable increase in specific activity for the hydrogen evolution reaction (HER) with Ru shell thickness and then have a dramatic decrease when the thickness of the nanoplates reaches 2.6 nm due to the structure transition of Ru from fcc to hcp. Among them, the Pd@Ru nanoplates with a thickness of 2.3 nm exhibit the optimal HER activity with good stability, even outperforming commercial Ru/C and state-of-the-art Pt/C catalysts in alkaline solution.

Graphical abstract: Facile synthesis of Pd@Ru nanoplates with controlled thickness as efficient catalysts for hydrogen evolution reaction

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Publication details

The article was received on 08 Apr 2018, accepted on 19 May 2018 and first published on 22 May 2018


Article type: Paper
DOI: 10.1039/C8CE00549D
Citation: CrystEngComm, 2018, Advance Article
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    Facile synthesis of Pd@Ru nanoplates with controlled thickness as efficient catalysts for hydrogen evolution reaction

    Y. Han, Y. Yan, Z. Wu, Y. Jiang, X. Li, Q. Xu, X. Yang, H. Zhang and D. Yang, CrystEngComm, 2018, Advance Article , DOI: 10.1039/C8CE00549D

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