An Interfacial Solar Heating Assisted Liquid Sorbent Atmospheric Water Generator. Issue 35 (12th July 2019)

• Record Type: Journal Article
• Authors: Wang, Xueyang; Li, Xiuqiang; Liu, Guoliang; Li, Jinlei; Hu, Xiaozhen; Xu, Ning; Zhao, Wei; Zhu, Bin; Zhu, Jia
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 35(2019)
• Page Start: 12054
• Page End: 12058
• Publication Date: 2019-07-12
• Subjects: aerogels -- desorption -- graphene oxide -- interfacial solar heating -- water harvesting; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201905229
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Harvesting water from air is a promising strategy for fresh‐water production, and it is particularly desirable for areas that lack direct access to clean water. While high‐concentration liquid sorbent is well‐known for high sorption, it has not been widely used for atmospheric water collection, being primarily limited by the difficulty in desorption. Interfacial solar heating based on a salt‐resistant GO‐based aerogel is now shown to enable a high‐concentration liquid sorbent (CaCl2 50 wt % solution) based atmospheric water generator. Fresh water (2.89 kg m −2 day −1 ) can be produced at about 70 % relative humidity, with only solar energy input and energy efficiency of desorption as high as 66.9 %. This low‐cost and effective approach provides an attractive pathway to extract water from air, to relieve the thirst of arid, land‐locked, and other areas where fresh water is scarce. Abstract : More than a drop to drink : Interfacial solar heating based on a salt‐resistant GO‐based aerogel is used for a high‐concentration (CaCl2 50 wt % solution) liquid‐sorbent‐based atmospheric water generator. Fresh water (2.89 kg m −2 day −1 ) can be produced at about 70 % relative humidity, with only solar energy input and energy efficiency of desorption as high as 66.9 %.