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An unconventional bilayer ice structure on a NaCl(001) film

Author

Listed:
  • Ji Chen

    (International Center for Quantum Materials, School of Physics, Peking University)

  • Jing Guo

    (International Center for Quantum Materials, School of Physics, Peking University)

  • Xiangzhi Meng

    (International Center for Quantum Materials, School of Physics, Peking University)

  • Jinbo Peng

    (International Center for Quantum Materials, School of Physics, Peking University)

  • Jiming Sheng

    (International Center for Quantum Materials, School of Physics, Peking University)

  • Limei Xu

    (International Center for Quantum Materials, School of Physics, Peking University
    Collaborative Innovation Center of Quantum Matter)

  • Ying Jiang

    (International Center for Quantum Materials, School of Physics, Peking University
    Collaborative Innovation Center of Quantum Matter)

  • Xin-Zheng Li

    (Collaborative Innovation Center of Quantum Matter
    School of Physics, Peking University)

  • En-Ge Wang

    (International Center for Quantum Materials, School of Physics, Peking University
    Collaborative Innovation Center of Quantum Matter)

Abstract

Water–solid interactions are of broad importance both in nature and technology. The hexagonal bilayer model based on the Bernal–Fowler–Pauling ice rules has been widely adopted to describe water structuring at interfaces. Using a cryogenic scanning tunnelling microscope, here we report a new type of two-dimensional ice-like bilayer structure built from cyclic water tetramers on an insulating NaCl(001) film, which is completely beyond this conventional bilayer picture. A novel bridging mechanism allows the interconnection of water tetramers to form chains, flakes and eventually a two-dimensional extended ice bilayer containing a regular array of Bjerrum D-type defects. Ab initio density functional theory calculations substantiate this bridging growth mode and reveal a striking proton-disordered ice structure. The formation of the periodic Bjerrum defects with unusually high density may have a crucial role as H donor sites in directing multilayer ice growth and in catalysing heterogeneous chemical reactions on water-coated salt surfaces.

Suggested Citation

  • Ji Chen & Jing Guo & Xiangzhi Meng & Jinbo Peng & Jiming Sheng & Limei Xu & Ying Jiang & Xin-Zheng Li & En-Ge Wang, 2014. "An unconventional bilayer ice structure on a NaCl(001) film," Nature Communications, Nature, vol. 5(1), pages 1-7, September.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5056
    DOI: 10.1038/ncomms5056
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    Cited by:

    1. Pengcheng Chen & Qiuhao Xu & Zijing Ding & Qing Chen & Jiyu Xu & Zhihai Cheng & Xiaohui Qiu & Bingkai Yuan & Sheng Meng & Nan Yao, 2023. "Identification of a common ice nucleus on hydrophilic and hydrophobic close-packed metal surfaces," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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