Lei Jinmei, Hou Yaqi, Wang Huimeng, Fan Yi, Zhang Yunmao, Chen Baiyi, Yu Shijie, Hou Xu
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
Institute of Artificial Intelligence, Xiamen University, Xiamen, 361005, China.
Angew Chem Int Ed Engl. 2022 Apr 19;61(17):e202201109. doi: 10.1002/anie.202201109. Epub 2022 Feb 28.
Carbon dioxide (CO ) capture and storage technologies are promising to limit CO emission from anthropogenic activities, to achieve carbon neutrality goals. CO capture requires one to separate CO from other gases, and therefore a gas flow system that exhibits discernible gating behaviors for CO would be very useful. Here we propose a self-adaptive CO gas valve composed of chemically responsive liquid gating systems. The transmembrane critical pressures of the liquid gate vary upon the presence of CO , due to the superamphiphiles assembled by poly(propylene glycol) bis(2-aminopropyl ether) and oleic acid in gating liquids that are protonated specifically by CO . It is shown that the valve can perform self-adaptive regulation for specific gases and different concentrations of CO . This protonation-induced liquid gating mechanism opens a potential platform for applications of CO separators, detectors, sensors and beyond.
二氧化碳（CO₂）捕集与封存技术有望限制人为活动产生的CO₂排放，以实现碳中和目标。CO₂捕集需要将CO₂与其他气体分离，因此，一种对CO₂表现出可辨别门控行为的气流系统将非常有用。在此，我们提出一种由化学响应性液体门控系统组成的自适应CO₂气阀。由于在门控液体中由聚丙二醇双（2-氨基丙基醚）和油酸组装的超两亲分子会被CO₂特异性质子化，液体门的跨膜临界压力会因CO₂的存在而变化。结果表明，该阀可以对特定气体和不同浓度的CO₂进行自适应调节。这种质子化诱导的液体门控机制为CO₂分离器、探测器、传感器及其他应用开辟了一个潜在的平台。
