Water Harvesting from Air: Current Passive Approaches and Outlook

In the context of global water scarcity, water vaporavailable in air is a non-negligible supplementary fresh waterresource. Current and potentialenergetically passiveprocedures forimproving atmospheric water harvesting (AWH) capabilities involvedifferent strategies and dedicated materials, which are reviewed inthis paper, from the perspective of morphology and wettabilityoptimization, substrate cooling, and sorbent assistance. Theadvantages and limitations of different AWH strategies arerespectively discussed, as well as their water harvesting performance.The various applications based on advanced AWH technologies arealso demonstrated. A prospective concept of multifunctional watervapor harvesting panel based on promising cooling material, inspiredby silicon-based solar energy panels, is finally proposed with a briefoutlook of its advantages and challenges

Automated summary

This paper reviews current and potential energetically passive procedures for improving atmospheric water harvesting capabilities, discussing their advantages, limitations, and water harvesting performance. It also demonstrates various applications and proposes a prospective concept for a multifunctional water vapor harvesting panel.