Super Moisture-Absorbent Gels for All-Weather Atmospheric Water Harvesting

Détails bibliographiques
Publié dans:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 10 vom: 27. März, Seite e1806446
Auteur principal:	Zhao, Fei (Auteur)
Autres auteurs:	Zhou, Xingyi, Liu, Yi, Shi, Ye, Dai, Yafei, Yu, Guihua
Format:	Article en ligne
Langue:	English
Publié:	2019
Accès à la collection:	Advanced materials (Deerfield Beach, Fla.)
Sujets:	Journal Article hydrogels moisture absorbing solar energy water harvesting

Description
Résumé:	© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Atmospheric water harvesting (AWH)-producing fresh water via collecting moisture from air-enables sustainable water delivery without geographical and hydrologic limitations. However, the fundamental design principle to prepare materials that can convert the water vapor in the air to collectible liquid water is still mostly unknown. Here, a super moisture-absorbent gel, which is composed of hygroscopic polypyrrole chloride penetrating in hydrophilicity-switchable polymeric network of poly N-isopropylacrylamide, is shown. Based on such design, a high-efficiency water production by AWH has been achieved in a broad range of relative humidity. The synergistic effect enabled by the molecular level integration of hygroscopic and hydrophilicity-switchable polymers in a network architecture presents controllable interaction between the gel and water molecules, simultaneously realizing efficient vapor capturing, in situ water liquefaction, high-density water storage and fast water releasing under different weather conditions. Being an effective method to regulate migration of water molecules, such design represents a novel strategy to improve the AWH, and it is also fundamental to other water management systems for environmental cooling, surficial moisturizing and beyond
Description:	Date Completed 06.03.2019 Date Revised 01.10.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.201806446