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A nature-inspired hydrogen-bonded supramolecular complex for selective copper ion removal from water

Author

Listed:
  • Ngoc T. Bui

    (The Molecular Foundry, Lawrence Berkeley National Laboratory
    The School of Chemical, Biological and Materials Engineering and the School of Civil Engineering and Environmental Science, the University of Oklahoma)

  • Hyungmook Kang

    (The Molecular Foundry, Lawrence Berkeley National Laboratory
    Department of Mechanical Engineering, University of California)

  • Simon J. Teat

    (Advanced Light Sources, Lawrence Berkeley National Laboratory)

  • Gregory M. Su

    (Advanced Light Sources, Lawrence Berkeley National Laboratory)

  • Chih-Wen Pao

    (National Synchrotron Radiation Research Center, Hsinchu Science Park)

  • Yi-Sheng Liu

    (Advanced Light Sources, Lawrence Berkeley National Laboratory)

  • Edmond W. Zaia

    (The Molecular Foundry, Lawrence Berkeley National Laboratory)

  • Jinghua Guo

    (Advanced Light Sources, Lawrence Berkeley National Laboratory)

  • Jeng-Lung Chen

    (National Synchrotron Radiation Research Center, Hsinchu Science Park)

  • Katie R. Meihaus

    (Departments of Chemistry, University of California)

  • Chaochao Dun

    (The Molecular Foundry, Lawrence Berkeley National Laboratory)

  • Tracy M. Mattox

    (The Molecular Foundry, Lawrence Berkeley National Laboratory)

  • Jeffrey R. Long

    (Departments of Chemistry, University of California
    Materials Sciences Division, Lawrence Berkeley National Laboratory
    Chemical and Biomolecular Engineering, University of California)

  • Peter Fiske

    (Water-Energy Resilience Research Institute, Lawrence Berkeley National Laboratory)

  • Robert Kostecki

    (Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory)

  • Jeffrey J. Urban

    (The Molecular Foundry, Lawrence Berkeley National Laboratory)

Abstract

Herein, we present a scalable approach for the synthesis of a hydrogen-bonded organic–inorganic framework via coordination-driven supramolecular chemistry, for efficient remediation of trace heavy metal ions from water. In particular, using copper as our model ion of interest and inspired by nature’s use of histidine residues within the active sites of various copper binding proteins, we design a framework featuring pendant imidazole rings and copper-chelating salicylaldoxime, known as zinc imidazole salicylaldoxime supramolecule. This material is water-stable and exhibits unprecedented adsorption kinetics, up to 50 times faster than state-of-the-art materials for selective copper ion capture from water. Furthermore, selective copper removal is achieved using this material in a pH range that was proven ineffective with previously reported metal–organic frameworks. Molecular dynamics simulations show that this supramolecule can reversibly breathe water through lattice expansion and contraction, and that water is initially transported into the lattice through hopping between hydrogen-bond sites.

Suggested Citation

  • Ngoc T. Bui & Hyungmook Kang & Simon J. Teat & Gregory M. Su & Chih-Wen Pao & Yi-Sheng Liu & Edmond W. Zaia & Jinghua Guo & Jeng-Lung Chen & Katie R. Meihaus & Chaochao Dun & Tracy M. Mattox & Jeffrey, 2020. "A nature-inspired hydrogen-bonded supramolecular complex for selective copper ion removal from water," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
  • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17757-6
    DOI: 10.1038/s41467-020-17757-6
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