A Robust and Low-Cost Sulfonated Hypercrosslinked Polymer for Atmospheric Water Harvesting

Paul Schweng, Florian Mayer, Danial Galehdari, Kathrin Weiland, Robert T. Woodward (Korresp. Autor*in)

Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed


The availability of freshwater is rapidly declining due to over-exploitation and climate change, with multiple parts of the globe already facing significant freshwater scarcity. Here, a sulfonated hypercrosslinked polymer able to repeatedly harvest significant amounts of water via direct air capture is reported. Water uptake from relative humidities as low as 10% is demonstrated, mimicking some of the harshest environments on Earth. A water harvesting device is used to show repeated uptake and harvesting without significant detriment to adsorbent performance. Desorption is triggered using simulated sunlight, presenting a low-energy route to water harvesting and adsorbent regeneration. The synthesis of sulfonated hypercrosslinked polymer requires only low-cost and readily available reagents, offering excellent potential for scale-up. Due to an almost limitless supply of water vapor from air in most regions around the globe, this approach can transform our ability to address water security concerns.

PublikationsstatusVeröffentlicht - 13 Dez. 2023

ÖFOS 2012

  • 104018 Polymerchemie
  • 205019 Materialwissenschaften


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