Title
A Sulfonated Covalent Organic Framework for Atmospheric Water Harvesting
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Abstract
We report a sulfonated covalent organic framework (COF) capable of atmospheric water harvesting in arid conditions. The isothermal water uptake profile of the framework was studied, and the network displayed steep water sorption at low relative humidity (RH) in temperatures of up to 45 °C, reaching a water uptake of 0.12 g g−1 at 10 % RH and even 0.08 g g−1 at just 5 % RH, representing some of the most extreme conditions on the planet. We found that the inclusion of sulfonate moieties shifted uptake in the water isotherm profiles to lower RH compared to non-sulfonated equivalents, demonstrating well the benefits of including these hydrophilic sites for water uptake in hot, arid locations. Repeated uptake and desorption cycles were performed on the material without significant detriment to its adsorption performance, demonstrating the potential of the sulfonated COF for real-world implementation.
Object type
Language
English [eng]
Persistent identifier
Appeared in
Title
ChemSusChem
ISSN
1864-5631
Issued
2024
Publication
Wiley
Version type
Date issued
2024
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Rights statement
© 2024 The Authors
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