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Ion-specific ice recrystallization provides a facile approach for the fabrication of porous materials

Author

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  • Shuwang Wu

    (Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences
    School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences)

  • Chongqin Zhu

    (University of Nebraska-Lincoln
    Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology)

  • Zhiyuan He

    (Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences
    School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences)

  • Han Xue

    (Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences
    School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences)

  • Qingrui Fan

    (Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences
    School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences)

  • Yanlin Song

    (Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences
    School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences)

  • Joseph S. Francisco

    (University of Nebraska-Lincoln)

  • Xiao Cheng Zeng

    (University of Nebraska-Lincoln
    Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology)

  • Jianjun Wang

    (Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences
    School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences)

Abstract

Ice recrystallization is of great importance to both fundamental research and practical applications, however understanding and controlling ice recrystallization processes remains challenging. Here, we report the discovery of an ion-specific effect on ice recrystallization. By simply changing the initial type and concentration of ions in an aqueous solution, the size of ice grains after recrystallization can be tuned from 27.4±4.1 to 277.5±30.9 μm. Molecular dynamics simulations show that the ability of the ion to be incorporated into the ice phase plays a key role in the ultimate size of the ice grains after recrystallization. Moreover, by using recrystallized ice crystals as templates, 2D and 3D porous networks with tuneable pore sizes could be prepared from various materials, for example, NaBr, collagen, quantum dots, silver and polystyrene colloids. These porous materials are suitable for a wide range of applications, for example, in organic electronics, catalysis and bioengineering.

Suggested Citation

  • Shuwang Wu & Chongqin Zhu & Zhiyuan He & Han Xue & Qingrui Fan & Yanlin Song & Joseph S. Francisco & Xiao Cheng Zeng & Jianjun Wang, 2017. "Ion-specific ice recrystallization provides a facile approach for the fabrication of porous materials," Nature Communications, Nature, vol. 8(1), pages 1-8, August.
  • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15154
    DOI: 10.1038/ncomms15154
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