A Porous Covalent Organic Framework with Voided Square Grid Topology for Atmospheric Water Harvesting,Journal of the American Chemical Society

当前位置： X-MOL 学术 › J. Am. Chem. Soc. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A Porous Covalent Organic Framework with Voided Square Grid Topology for Atmospheric Water Harvesting
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-01-16 , DOI: 10.1021/jacs.9b13094
Ha L Nguyen ₁ , Nikita Hanikel ₁ , Steven J Lyle ₁ , Chenhui Zhu ₂ , Davide M Proserpio _{3,

4} , Omar M Yaghi _{1,

5}

Affiliation

Atmospheric moisture is a ubiquitous water resource available at any time and any place, making it attractive to develop materials for harvesting water from air to address the imminent water shortage crisis. In this context, we have been exploring the applicability of covalent organic frameworks (COFs) for water harvesting and report here a new porous, two-dimensional imine-linked COF with a voided square grid topology, termed COF-432. Unlike other reported COFs, COF-432 meets the requirements desired for water harvesting from air in that it exhibits an 'S'-shaped water sorption isotherm with a steep pore-filling step at low relative humidity and without hysteretic behavior - properties essential for energy efficient uptake and release of water. Further, it can be regenerated at ultra-low temperatures and displays exceptional hydrolytic stability, as demonstrated by the retention of its working capacity after 300 water adsorption-desorption cycles.

中文翻译：

用于大气集水的具有空心方形网格拓扑结构的多孔共价有机框架

大气水分是一种随时随地可用的无处不在的水资源，因此开发从空气中收集水分的材料以解决迫在眉睫的缺水危机具有吸引力。在这种情况下，我们一直在探索共价有机框架 (COF) 在集水方面的适用性，并在此报告了一种新的多孔、二维亚胺连接的 COF，具有空洞的方形网格拓扑结构，称为 COF-432。与其他报道的 COF 不同，COF-432 满足从空气中收集水所需的要求，因为它表现出“S”形吸水等温线，在低相对湿度下具有陡峭的孔隙填充步骤，并且没有滞后行为 - 对能量至关重要的特性有效吸收和释放水分。更多，

更新日期：2020-01-16

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11