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Two-dimensional molybdenum carbide 2D-Mo2C as a superior catalyst for CO2 hydrogenation

Author

Listed:
  • Hui Zhou

    (Department of Mechanical and Process Engineering
    Tsinghua University)

  • Zixuan Chen

    (Department of Mechanical and Process Engineering)

  • Evgenia Kountoupi

    (Department of Mechanical and Process Engineering)

  • Athanasia Tsoukalou

    (Department of Mechanical and Process Engineering)

  • Paula M. Abdala

    (Department of Mechanical and Process Engineering)

  • Pierre Florian

    (CNRS, CEMHTI UPR3079, Université d′Orléans)

  • Alexey Fedorov

    (Department of Mechanical and Process Engineering)

  • Christoph R. Müller

    (Department of Mechanical and Process Engineering)

Abstract

Early transitional metal carbides are promising catalysts for hydrogenation of CO2. Here, a two-dimensional (2D) multilayered 2D-Mo2C material is prepared from Mo2CTx of the MXene family. Surface termination groups Tx (O, OH, and F) are reductively de-functionalized in Mo2CTx (500 °C, pure H2) avoiding the formation of a 3D carbide structure. CO2 hydrogenation studies show that the activity and product selectivity (CO, CH4, C2–C5 alkanes, methanol, and dimethyl ether) of Mo2CTx and 2D-Mo2C are controlled by the surface coverage of Tx groups that are tunable by the H2 pretreatment conditions. 2D-Mo2C contains no Tx groups and outperforms Mo2CTx, β-Mo2C, or the industrial Cu-ZnO-Al2O3 catalyst in CO2 hydrogenation (evaluated by CO weight time yield at 430 °C and 1 bar). We show that the lack of surface termination groups drives the selectivity and activity of Mo-terminated carbidic surfaces in CO2 hydrogenation.

Suggested Citation

  • Hui Zhou & Zixuan Chen & Evgenia Kountoupi & Athanasia Tsoukalou & Paula M. Abdala & Pierre Florian & Alexey Fedorov & Christoph R. Müller, 2021. "Two-dimensional molybdenum carbide 2D-Mo2C as a superior catalyst for CO2 hydrogenation," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25784-0
    DOI: 10.1038/s41467-021-25784-0
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    Cited by:

    1. Chenyu Li & Zhijie Wang & Mingda Liu & Enze Wang & Bolun Wang & Longlong Xu & Kaili Jiang & Shoushan Fan & Yinghui Sun & Jia Li & Kai Liu, 2022. "Ultrafast self-heating synthesis of robust heterogeneous nanocarbides for high current density hydrogen evolution reaction," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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