Temperature-regulation liquid gating membrane with controllable gas/liquid separation

作     者：Baiyi Chen Huimeng Wang Jiadai Xu Liting Pan Yuan Jing Xu Hou Baiyi Chen;Huimeng Wang;Jiadai Xu;Liting Pan;Yuan Jing;Xu Hou

作者机构：State Key Laboratory of Physical Chemistry of Solid SurfacesCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China Department of PhysicsResearch Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamen361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM)Xiamen361102China State Key Laboratory of Bio-Fibers and Eco-TextilesQingdao UniversityQingdao266071China 

出 版 物：《Green Energy & Environment》 (绿色能源与环境（英文版）)

年 卷 期：2023年第8卷第6期

页      面：1501-1508页

核心收录：

学科分类：080706[工学-化工过程机械] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：supported by the National Natural Science Foundation of China (52025132, 21621091, 22021001, 22121001, 22275207 and T2241022) the National Science Foundation of Fujian Province of China (2022J02059) the State Key Laboratory of Bio-Fibers and Eco-Textiles (Qingdao University) (KFKT202221) the 111 Project (B17027, B16029) the Science and Technology Projects of Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (RD2022070601) the Tencent Foundation (The XPLORER PRIZE) 

主　　题：Temperature-regulation Liquid gating membrane Sandwich configuration Multiphase separation Environmental governance 

摘      要：Membrane separation technology with the ability to regulate gas/liquid transport and separation is critical for environmental fields, such as sewerage treatment, multiphase separation, and desalination. Although numerous membranes can dynamically control liquid-phase fluids transport via external stimuli, the transport and separation of gas-phase fluids remains a challenge. Here, we show a temperature-regulation liquid gating membrane that allows in-situ dynamically controllable gas/liquid transfer and multiphase separation by integrating a thermo-wettability responsive porous membrane with functional gating liquid. Experiments and theoretical analysis have demonstrated the temperature-regulation mechanism of this liquid gating system, which is based on thermo-responsive changes of porous membrane surface polarity, leading to changes in affinity between the porous membrane and the gating liquid. In addition, the sandwich configuration with dense Au-coated surfaces and heterogeneous internal components by a bistable interface design enables the liquid gating system to enhance response sensitivity and maintain working stability. This temperature-regulation gas/liquid transfer strategy expands the application range of liquid gating membranes,which are promising in environmental governance, water treatment and multiphase separation.