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Trade-off in membrane distillation with monolithic omniphobic membranes

Author

Listed:
  • Wei Wang

    (Colorado State University)

  • Xuewei Du

    (Colorado State University)

  • Hamed Vahabi

    (Colorado State University)

  • Song Zhao

    (Tianjin University)

  • Yiming Yin

    (Colorado State University)

  • Arun K. Kota

    (Colorado State University
    Colorado State University
    Colorado State University
    Colorado State University)

  • Tiezheng Tong

    (Colorado State University)

Abstract

Omniphobic membranes are attractive for membrane distillation (MD) because of their superior wetting resistance. However, a design framework for MD membrane remains incomplete, due to the complexity of omniphobic membrane fabrication and the lack of fundamental relationship between wetting resistance and water vapor permeability. Here we present a particle-free approach that enables rapid fabrication of monolithic omniphobic membranes for MD desalination. Our monolithic omniphobic membranes display excellent wetting resistance and water purification performance in MD desalination of hypersaline feedwater containing surfactants. We identify that a trade-off exists between wetting resistance and water vapor permeability of our monolithic MD membranes. Utilizing membranes with tunable wetting resistance and permeability, we elucidate the underlying mechanism of such trade-off. We envision that our fabrication method as well as the mechanistic insight into the wetting resistance-vapor permeability trade-off will pave the way for smart design of MD membranes in diverse water purification applications.

Suggested Citation

  • Wei Wang & Xuewei Du & Hamed Vahabi & Song Zhao & Yiming Yin & Arun K. Kota & Tiezheng Tong, 2019. "Trade-off in membrane distillation with monolithic omniphobic membranes," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11209-6
    DOI: 10.1038/s41467-019-11209-6
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    Cited by:

    1. Baoping Zhang & Pak Wai Wong & Jiaxin Guo & Yongsen Zhou & Yang Wang & Jiawei Sun & Mengnan Jiang & Zuankai Wang & Alicia Kyoungjin An, 2022. "Transforming Ti3C2Tx MXene’s intrinsic hydrophilicity into superhydrophobicity for efficient photothermal membrane desalination," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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