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Metal–Organic Frameworks for Water Harvesting from Air
Advanced Materials ( IF 29.4 ) Pub Date : 2018-04-19 , DOI: 10.1002/adma.201704304
Markus J. Kalmutzki 1, 2 , Christian S. Diercks 1, 2 , Omar M. Yaghi 1, 2, 3
Affiliation  

Water harvesting from air in passive, adsorption‐based devices holds great potential for delivering drinking water to arid regions of the world. This technology requires adsorbents that can be tailored for a maximum working capacity, temperature response, and the relative pressure range in which reversible adsorption occurs. In this respect, metal–organic frameworks (MOFs) are promising, owing to their structural diversity and the precision of their functionalization for adjusting both pore size and hydrophilicity, thereby facilitating the rational design of their water‐sorption characteristics. Here, chemical and structural factors crucial for the design of hydrolytically stable MOFs for water adsorption are discussed. Prevalent water adsorption mechanisms in micro‐ and mesoporous MOFs alongside strategies for fine‐tuning of their adsorption behavior by means of reticular chemistry are presented. Finally, an approach for the selection of promising MOFs with respect to water harvesting from air is proposed and design concepts for next‐generation MOFs for application in passive adsorption‐based water‐harvesting devices are outlined.

中文翻译:

从空气中收集水的金属有机框架

在被动的,基于吸附的设备中从空气中收集水具有将饮用水输送到世界干旱地区的巨大潜力。该技术需要可针对最大工作能力,温度响应以及发生可逆吸附的相对压力范围进行定制的吸附剂。在这方面,由于金属有机骨架(MOFs)的结构多样性和调节孔径和亲水性的功能化精度,从而促进了吸水特性的合理设计,金属有机骨架(MOFs)是有前途的。在此,讨论了对于设计用于水吸附的水解稳定型MOF至关重要的化学和结构因素。提出了微孔和中孔MOF中普遍存在的水吸附机理,以及通过网状化学对它们的吸附行为进行微调的策略。最后,提出了一种从空气中集水方面选择有前景的MOF的方法,并概述了用于被动式吸附式集水装置的下一代MOF的设计概念。
更新日期:2018-04-19
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