An Interfacial Solar‐Driven Atmospheric Water Generator Based on a Liquid Sorbent with Simultaneous Adsorption–Desorption

作者：Heshan Qi, Tianqi Wei, Wei Zhao, Bin Zhu, Guoliang Liu, Pingping Wang, Zhenhui Lin, Xueyang Wang, Xiuqiang Li, Xiaowei Zhang, Jia Zhu · 发表于：Advanced Materials · 年份：2019 · DOI：10.1002/adma.201903378 · 被引用次数：269 · 研究领域：Solar-Powered Water Purification Methods、Adsorption and Cooling Systems、Surface Modification and Superhydrophobicity

Abstract Water scarcity is one of the greatest challenges facing human society. Because of the abundant amount of water present in the atmosphere, there are significant efforts to harvest water from air. Particularly, solar‐driven atmospheric water generators based on sequential adsorption–desorption processes are attracting much attention. However, incomplete daytime desorption is the limiting factor for final water production, as the rate of water desorption typically decreases very quickly with decreased water content in the sorbents. Hereby combining tailored interfacial solar absorbers with an ionic‐liquid‐based sorbent, an atmospheric water generator with a simultaneous adsorption–desorption process is generated. With enhanced desorption capability and stabilized water content in the sorbent, this interfacial solar‐driven atmospheric water generator enables a high rate of water production (≈0.5 L m −2 h −1 ) and 2.8 L m −2 d −1 for the outdoor environment. It is expected that this interfacial solar‐driven atmospheric water generator, based on the liquid sorbent with a simultaneous adsorption–desorption process opens up a promising pathway to effectively harvest water from air.