Title: Carbon Dioxide Chemically Responsive Switchable Gas Valves with Protonation-Induced Liquid Gating Self-Adaptive Systems

Authors: Jinmei Lei, Yaqi Hou, Huimeng Wang, Yi Fan, Yunmao Zhang, Baiyi Chen, Shijie Yu, Xu Hou*

Abstract: Carbon dioxide (CO2) capture and storage technologies are promising to limit CO2 emission from anthropogenic activities, to achieve carbon neutrality goals. CO2 capture requires to separate CO2 from other gases, and therefore a gas flow system that exhibits discernible gating behaviors for CO2 would provide the usefulness. Here we propose a self-adaptive CO2 gas valve composed of chemically responsive liquid gating systems. The transmembrane critical pressures of the liquid gate vary upon the presence of CO2 , due to the superamphiphiles assembled by Poly(propylene glycol) bis(2-aminopropyl ether) and oleic acid in gating liquid s that protonated specifically by CO2 . It is shown that the valve can perform self-adaptive regulation for specific gases and different CO2 concentrations. This protonation-induced liquid gating mechanism will open a potential platform for the application of CO2 separators, detectors, sensors and beyond.

Full-Link: https://onlinelibrary.wiley.com/doi/10.1002/anie.202201109