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Hydrogel-embedded vertically aligned metal-organic framework nanosheet membrane for efficient water harvesting

Author

Listed:
  • Lingyue Zhang

    (The University of Hong Kong)

  • Ruiying Li

    (The University of Hong Kong)

  • Shuang Zheng

    (The University of Hong Kong)

  • Hai Zhu

    (The University of Hong Kong)

  • Moyuan Cao

    (Nankai University)

  • Mingchun Li

    (Tsinghua University)

  • Yaowen Hu

    (The University of Hong Kong)

  • Li Long

    (The University of Hong Kong)

  • Haopeng Feng

    (The University of Hong Kong)

  • Chuyang Y. Tang

    (The University of Hong Kong)

Abstract

Highly porous metal-organic framework (MOF) nanosheets have shown promising potential for efficient water sorption kinetics in atmospheric water harvesting (AWH) systems. However, the water uptake of single-component MOF absorbents remains limited due to their low water retention. To overcome this limitation, we present a strategy for fabricating vertically aligned MOF nanosheets on hydrogel membrane substrates (MOF-CT/PVA) to achieve ultrafast AWH with high water uptake. By employing directional growth of MOF nanosheets, we successfully create superhydrophilic MOF coating layer and pore channels for efficient water transportation to the crosslinked flexible hydrogel membrane. The designed composite water harvester exhibits ultrafast sorption kinetics, achieving 91.4% saturation within 15 min. Moreover, MOF-CT/PVA exhibits superior solar-driven water capture-release capacity even after 10 cycles of reuse. This construction approach significantly enhances the water vapor adsorption, offering a potential solution for the design of composite MOF-membrane harvesters to mitigate the freshwater crisis.

Suggested Citation

  • Lingyue Zhang & Ruiying Li & Shuang Zheng & Hai Zhu & Moyuan Cao & Mingchun Li & Yaowen Hu & Li Long & Haopeng Feng & Chuyang Y. Tang, 2024. "Hydrogel-embedded vertically aligned metal-organic framework nanosheet membrane for efficient water harvesting," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-54215-z
    DOI: 10.1038/s41467-024-54215-z
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    References listed on IDEAS

    as
    1. Youhong Guo & Weixin Guan & Chuxin Lei & Hengyi Lu & Wen Shi & Guihua Yu, 2022. "Scalable super hygroscopic polymer films for sustainable moisture harvesting in arid environments," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    2. Chen, Zhuo & Wu, Qianyuan & Wu, Guangxue & Hu, Hong-Ying, 2017. "Centralized water reuse system with multiple applications in urban areas: Lessons from China’s experience," Resources, Conservation & Recycling, Elsevier, vol. 117(PB), pages 125-136.
    3. He Shan & Chunfeng Li & Zhihui Chen & Wenjun Ying & Primož Poredoš & Zhanyu Ye & Quanwen Pan & Jiayun Wang & Ruzhu Wang, 2022. "Exceptional water production yield enabled by batch-processed portable water harvester in semi-arid climate," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
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