Heterogeneous wettability and radiative cooling for efficient deliquescent sorbents-based atmospheric water harvesting

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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  • Yang Wang
  • Baoping Zhang
  • Mengnan Jiang
  • Zuankai Wang


Original languageEnglish
Article number100879
Journal / PublicationCell Reports Physical Science
Issue number5
Online published29 Apr 2022
Publication statusPublished - 18 May 2022



Atmospheric water harvesting (AWH) is an emerging approach to solve the worldwide water crisis. Metal-organic frameworks and hydrogels have been extensively explored as sorbents for AWH; however, they suffer from relatively low water sorption capacity in arid conditions, a feature innately owned by a common material: deliquescent sorbents. Deliquescent sorbents are, however, limited by inevitable water leakage and restricted capacity. Here, we develop an efficient AWH approach that achieves an excellent water harvesting capacity of 2.62 g/g even in arid conditions by designing devices consisting of a superhydrophilic inside matrix loaded with deliquescent sorbents for efficient water adsorption, superhydrophobic and elastic fibrous skin for adaptative expansion, and water leakage prevention. The fibrous skin also exhibits a preferred radiative cooling effect, extending effective humidity and sorption capacity. The all-in-one design that combines heterogeneous wettability, radiative cooling, and elasticity-induced adaptivity opens a new route for addressing water challenges in a wide range of working conditions.

Research Area(s)

  • arid regions, atmospheric water harvesting, deliquescent sorbent, photothermal effect, radiative cooling, self-adaptivity, superhydrophobicity, wettability

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