吸附
吸附剂
共价有机骨架
水分
化学工程
化学
沸腾
相对湿度
环境化学
共价键
吸附
有机化学
气象学
物理
工程类
作者
Lianghui Chen,Wang-Kang Han,Xiaodong Yan,Jiangwei Zhang,Yuqin Jiang,Zhi-Guo Gu
出处
期刊:Chemsuschem
[Wiley]
日期:2022-11-14
卷期号:15 (24)
被引量:8
标识
DOI:10.1002/cssc.202201824
摘要
Atmospheric moisture is a sustainable clean water source that can solve the shortage of fresh water in arid areas. Herein a 2D covalent organic framework (COF-ok) was reported as a promising porous sorbent for solar-driven atmospheric water harvesting. COF-ok with ortho-ketoenamine linkage was extremely stable in harsh environment, including in boiling water, strong acids and bases. Because of the balanced hydrophilic and hydrophobic sites in channels, COF-ok showed a high water uptake of 0.33 g g-1 at a low relative humidity of 34 % featuring a characteristic S-shaped water sorption isotherm with low regeneration temperature (∼45 °C) and excellent cyclic stability. A laboratory-scale water harvesting system could collect water of 161 g kg-1 under sunlight.
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