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231226s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202207786
|2 doi
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|a pubmed24n1338.xml
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|a (NLM)36239247
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|a DE-627
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|a eng
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|a Guan, Weixin
|e verfasserin
|4 aut
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|a Hygroscopic-Microgels-Enabled Rapid Water Extraction from Arid Air
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|c 2024
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 21.03.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley‐VCH GmbH.
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|a Sorbent-based atmospheric water harvesting (AWH) has emerged as a promising decentralized water-production technology to mitigate the freshwater crisis in arid areas. Hydrogels have been regarded as attractive sorbents due to their high water retention and tailorable polymer-water interactions. Yet, the kinetics of water sorption and desorption at low relative humidity (RH) shall be improved for their practical implementation. Here, hygroscopic microgels (HMGs) composed of hydroxypropyl cellulose (HPC) and hygroscopic salt are reported, which achieve a water uptake of ca. 0.5-0.8 g g-1 at 15-30% RH. HMGs enable rapid sorption-desorption kinetics owing to the short-distance diffusion in the microgels and hydrophilicity-hydrophobicity switching of the thermoresponsive HPC. To validate the feasibility of HMGs for moisture extraction, a potential daily water collection of up to equivalent 7.9-19.1 L kg-1 at low RH is demonstrated, enabled by 24-36 operation cycles per day based on the material-level experiments. With renewable raw materials and superior performance, HMGs provide a sustainable approach for rapid moisture extraction in arid climates
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|a Journal Article
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|a arid environments
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|a atmospheric water harvesting
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|a hydrogels
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|a kinetics
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|a microgels
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|a Lei, Chuxin
|e verfasserin
|4 aut
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|a Guo, Youhong
|e verfasserin
|4 aut
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|a Shi, Wen
|e verfasserin
|4 aut
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|a Yu, Guihua
|e verfasserin
|4 aut
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 12 vom: 09. März, Seite e2207786
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:36
|g year:2024
|g number:12
|g day:09
|g month:03
|g pages:e2207786
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|u http://dx.doi.org/10.1002/adma.202207786
|3 Volltext
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