Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania15261, United States.
ACS Appl Mater Interfaces. 2023 Feb 8;15(5):7353-7358. doi: 10.1021/acsami.2c18920. Epub 2023 Jan 30.
An abundant supply of fresh water is one of the leading challenges of the 21st century (UNESCO. UNESCO: Paris, France, 2018; p 154). Here we describe a new approach to scavenge atmospheric water that employs a hierarchically ordered porous material with embedded particles (Lash, M. H.; Jordan, J. C.; Blevins, L. C.; Fedorchak, M. V.; Little, S. R.; McCarthy, J. J.Non-Brownian Particle-Based Materials with Microscale and Nanoscale Hierarchy. 201554, 5854-5858). This composite uses structure to amplify native material performance to realize synergy between the capture and storage and to ultimately qualitatively change the adsorption behavior of the hydrogel (from unfavorable to favorable). In this way we can capture moisture at significantly lower relative humidities than would otherwise be feasible with the native materials. Not only does this approach pose the potential for a cheap and low-energy source of clean water but it could also be modified for application across a variety of condensable vapor reclamations.
淡水供应充足是 21 世纪面临的主要挑战之一（联合国教科文组织。教科文组织：法国巴黎，2018 年；第 154 页）。在这里，我们描述了一种利用具有嵌入式颗粒的分级多孔材料收集大气水的新方法（Lash，M.H.；Jordan，J.C.；Blevins，L.C.；Fedorchak，M.V.；Little，S.R.；McCarthy，J.J.具有微纳分级结构的非布朗粒子基材料。2015,54,5854-5858）。这种复合材料利用结构放大了天然材料的性能，在捕获和存储之间实现协同作用，并最终从根本上改变水凝胶的吸附行为（从不有利变为有利）。通过这种方式，我们可以在比使用天然材料低得多的相对湿度下捕获水分。这种方法不仅为廉价、低能耗的清洁水源提供了可能，而且还可以对其进行修改，以应用于各种可冷凝蒸汽的回收。
