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Single-atom catalyst for high-performance methanol oxidation

Author

Listed:
  • Zhiqi Zhang

    (Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology)

  • Jiapeng Liu

    (Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology)

  • Jian Wang

    (Seoul National University)

  • Qi Wang

    (Southern University of Science and Technology)

  • Yuhao Wang

    (Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology)

  • Kai Wang

    (South China University of Technology, Guangzhou Higher Education Mega Centre)

  • Zheng Wang

    (Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology)

  • Meng Gu

    (Southern University of Science and Technology)

  • Zhenghua Tang

    (South China University of Technology, Guangzhou Higher Education Mega Centre)

  • Jongwoo Lim

    (Seoul National University)

  • Tianshou Zhao

    (Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology)

  • Francesco Ciucci

    (Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology
    Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology)

Abstract

Single-atom catalysts have been widely investigated for several electrocatalytic reactions except electrochemical alcohol oxidation. Herein, we synthesize atomically dispersed platinum on ruthenium oxide (Pt1/RuO2) using a simple impregnation-adsorption method. We find that Pt1/RuO2 has good electrocatalytic activity towards methanol oxidation in an alkaline media with a mass activity that is 15.3-times higher than that of commercial Pt/C (6766 vs. 441 mA mg‒1Pt). In contrast, single atom Pt on carbon black is inert. Further, the mass activity of Pt1/RuO2 is superior to that of most Pt-based catalysts previously developed. Moreover, Pt1/RuO2 has a high tolerance towards CO poisoning, resulting in excellent catalytic stability. Ab initio simulations and experiments reveal that the presence of Pt‒O3f (3-fold coordinatively bonded O)‒Rucus (coordinatively unsaturated Ru) bonds with the undercoordinated bridging O in Pt1/RuO2 favors the electrochemical dehydrogenation of methanol with lower energy barriers and onset potential than those encountered for Pt‒C and Pt‒Ru.

Suggested Citation

  • Zhiqi Zhang & Jiapeng Liu & Jian Wang & Qi Wang & Yuhao Wang & Kai Wang & Zheng Wang & Meng Gu & Zhenghua Tang & Jongwoo Lim & Tianshou Zhao & Francesco Ciucci, 2021. "Single-atom catalyst for high-performance methanol oxidation," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25562-y
    DOI: 10.1038/s41467-021-25562-y
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    Cited by:

    1. Yiming Zhu & Malte Klingenhof & Chenlong Gao & Toshinari Koketsu & Gregor Weiser & Yecan Pi & Shangheng Liu & Lijun Sui & Jingrong Hou & Jiayi Li & Haomin Jiang & Limin Xu & Wei-Hsiang Huang & Chih-We, 2024. "Facilitating alkaline hydrogen evolution reaction on the hetero-interfaced Ru/RuO2 through Pt single atoms doping," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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