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Highly Ion-Permselective Porous Organic Cage Membranes with Hierarchical Channels.
Xu, Tingting; Wu, Bin; Hou, Linxiao; Zhu, Yanran; Sheng, Fangmeng; Zhao, Zhang; Dong, Yun; Liu, Jiandang; Ye, Bangjiao; Li, Xingya; Ge, Liang; Wang, Huanting; Xu, Tongwen.
Afiliação
  • Xu T; Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
  • Wu B; School of Chemistry & Chemical Engineering, Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei 230601, China.
  • Hou L; Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
  • Zhu Y; Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
  • Sheng F; Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
  • Zhao Z; Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
  • Dong Y; State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Liu J; State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Ye B; State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China.
  • Li X; Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
  • Ge L; Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
  • Wang H; Department of Chemical and Biological Engineering, Monash University, Clayton, Victoria 3800, Australia.
  • Xu T; Anhui Provincial Engineering Laboratory of Functional Membrane Materials and Technology, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China.
J Am Chem Soc ; 144(23): 10220-10229, 2022 06 15.
Article em En | MEDLINE | ID: mdl-35586909
ABSTRACT
Membranes of high ion permselectivity are significant for the separation of ion species at the subnanometer scale. Here, we report porous organic cage (i.e., CC3) membranes with hierarchical channels including discrete internal cavities and cage-aligned external cavities connected by subnanometer-sized windows. The windows of CC3 sieve monovalent ions from divalent ones and the dual nanometer-sized cavities provide pathways for fast ion transport with a flux of 1.0 mol m-2 h-1 and a mono-/divalent ion selectivity (e.g., K+/Mg2+) up to 103, several orders of magnitude higher than the permselectivities of reported membranes. Molecular dynamics simulations illustrate the ion transport trajectory from the external to internal cavity via the CC3 window, where ions migrate in diverse hydration states following the energy barrier sequence of K+ < Na+ < Li+ ≪ Mg2+. This work sheds light on ion transport properties in porous organic cage channels of discrete frameworks and offers guidelines for developing membranes with hierarchical channels for efficient ion separation.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Sódio / Lítio Idioma: En Revista: J Am Chem Soc Ano de publicação: 2022 Tipo de documento: Article País de afiliação: China
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Sódio / Lítio Idioma: En Revista: J Am Chem Soc Ano de publicação: 2022 Tipo de documento: Article País de afiliação: China