Ion transport regulation through triblock copolymer/PET asymmetric nanochannel membrane:Model system establishment and rectification mapping |
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Authors: | Linsen Yang Pei Liu Congcong Zhu Yuanyuan Zhao Miaomiao Yuan Xiang-Yu Kong Liping Wen Lei Jiang |
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Institution: | 1. Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2. School of Future Technology, University of Chinese Academy of Science, Beijing 100049, China;3. The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen 518033, China |
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Abstract: | Controlling ions transport across the membrane at different pH environments is essential for the physiological process and artificial systems.Many efforts have been devoted to pH-responsive ion gating,while rarely systems can maintain the rectification in pH-changing environments.Here,a composite nanochannel system is fabricated,which shows unidirectional rectification with high performance in a wide pH range.In the system,block copolymer(BCP) and polyethylene te rephthalate(PET) are employed for the amphoteric nanochannels fabrication.Based on the composite system,a model is built for the theoretical simulation.Thereafter,rectification mapping is conducted on the system,which can provide abundant info rmation about the relations between charge distribution and ions transport prope rties.The proposed rectification mapping can definitely help to design new materials with special ion transport properties,such as high-performance membranes used in the salinity gradient power generation field. |
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Keywords: | Nanochannel Unidirectional rectification Composited membrane Ion transport Rectification mapping |
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