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Understanding catalysis in a multiphasic two-dimensional transition metal dichalcogenide

Author

Listed:
  • Stanley S. Chou

    (Advanced Materials Laboratory, Sandia National Laboratories)

  • Na Sai

    (The University of Texas at Austin)

  • Ping Lu

    (Sandia National Laboratories)

  • Eric N. Coker

    (Advanced Materials Laboratory, Sandia National Laboratories)

  • Sheng Liu

    (Center For Integrated Nanotechnologies (CINT), Sandia National Laboratories)

  • Kateryna Artyushkova

    (The University of New Mexico)

  • Ting S. Luk

    (Center For Integrated Nanotechnologies (CINT), Sandia National Laboratories)

  • Bryan Kaehr

    (Advanced Materials Laboratory, Sandia National Laboratories
    The University of New Mexico)

  • C. Jeffrey Brinker

    (Advanced Materials Laboratory, Sandia National Laboratories
    Center For Integrated Nanotechnologies (CINT), Sandia National Laboratories
    The University of New Mexico)

Abstract

Establishing processing–structure–property relationships for monolayer materials is crucial for a range of applications spanning optics, catalysis, electronics and energy. Presently, for molybdenum disulfide, a promising catalyst for artificial photosynthesis, considerable debate surrounds the structure/property relationships of its various allotropes. Here we unambiguously solve the structure of molybdenum disulfide monolayers using high-resolution transmission electron microscopy supported by density functional theory and show lithium intercalation to direct a preferential transformation of the basal plane from 2H (trigonal prismatic) to 1T′ (clustered Mo). These changes alter the energetics of molybdenum disulfide interactions with hydrogen (ΔGH), and, with respect to catalysis, the 1T′ transformation renders the normally inert basal plane amenable towards hydrogen adsorption and hydrogen evolution. Indeed, we show basal plane activation of 1T′ molybdenum disulfide and a lowering of ΔGH from +1.6 eV for 2H to +0.18 eV for 1T′, comparable to 2H molybdenum disulfide edges on Au(111), one of the most active hydrogen evolution catalysts known.

Suggested Citation

  • Stanley S. Chou & Na Sai & Ping Lu & Eric N. Coker & Sheng Liu & Kateryna Artyushkova & Ting S. Luk & Bryan Kaehr & C. Jeffrey Brinker, 2015. "Understanding catalysis in a multiphasic two-dimensional transition metal dichalcogenide," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9311
    DOI: 10.1038/ncomms9311
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    Cited by:

    1. Xiangye Liu & Pingting Zhang & Shiyao Wang & Yuqiang Fang & Penghui Wu & Yue Xiang & Jipeng Chen & Chendong Zhao & Xian Zhang & Wei Zhao & Junjie Wang & Fuqiang Huang & Cao Guan, 2024. "High intrinsic phase stability of ultrathin 2M WS2," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Kanwar Abhay Singh & John Soukar & Mohammad Zulkifli & Anna Kersey & Giriraj Lokhande & Sagnika Ghosh & Aparna Murali & Natalie M. Garza & Harman Kaur & Justin N. Keeney & Ramu Banavath & Hatice Ceyla, 2024. "Atomic vacancies of molybdenum disulfide nanoparticles stimulate mitochondrial biogenesis," Nature Communications, Nature, vol. 15(1), pages 1-15, December.

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