Desalination, Год журнала: 2025, Номер unknown, С. 119053 - 119053
Опубликована: Май 1, 2025
Язык: Английский
Environmental Science & Technology, Год журнала: 2025, Номер unknown
Опубликована: Фев. 20, 2025
Electromembrane water treatment technologies are attracting attention for their energy efficiency and precise separation of counterions. However, ion-exchange membranes exhibit low ionic conductance selectivity ions with similar charges. In this study, we developed a novel ZIF-8 composite membrane amine-modified nanochannels through an in situ PEI-assisted seeding secondary growth method. An integral uniform selective layer was formed, the induced differential transport Li+, Na+, K+, Mg2+ via dehydration-hydration process. The possessed lower barrier Na+ (Ea = 13 kJ mol-1) compared to 17 mol-1), showing flux 3.7 × 10-8 mol·cm-2·s-1 Na+/Mg2+ permselectivity 52 (∼60 times higher than commercial membrane). physicochemical electrochemical properties were systematically characterized, revealing significant role increasing repulsion facilitating diffusion. Besides, DFT simulation interaction calculation elucidated that moderate binding compensation effect between nanochannels, which can be precisely regulated by PEI incorporation, crucial favorable passage while maintaining high rejection. also demonstrated performance stability during 5-day test maintained across varying salinity pH conditions. This work advances development efficient cation sustainable desalination resource recovery.
Язык: Английский
Процитировано
2
Journal of Membrane Science, Год журнала: 2025, Номер unknown, С. 123774 - 123774
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
1
Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132111 - 132111
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
1
Water Research, Год журнала: 2024, Номер 268, С. 122703 - 122703
Опубликована: Окт. 28, 2024
Язык: Английский
Процитировано
8
Advanced Science, Год журнала: 2025, Номер unknown
Опубликована: Янв. 14, 2025
Abstract Membrane technology holds significant potential for the recovery of acids and alkalis from industrial wastewater systems, with ion exchange membranes (IEMs) playing a crucial role in these applications. However, conventional IEMs are limited to separating only monovalent cations or anions, presenting challenge achieving concomitant H⁺/OH⁻ permselectivity simultaneous acid alkali recovery. To address this issue, charged microporous polymer framework developed, featuring rigid Tröger's Base network chains constructed through facile sol‐gel process. The intrinsic ultramicropore confinement quaternary ammonium‐charged functional groups provide ultrahigh size‐sieving capability enhanced Donnan exclusion selectivity; meanwhile, internal protoplasmic channels frameworks serve as highways rapid transfer. resulting membrane achieves high H⁺/Fe 2 ⁺ OH⁻/WO₄ ⁻ selectivities 694.4 181.0, respectively, concurrent separation diffusion dialysis electrodialysis processes over extended operational periods (exceeding 1600 600 h, respectively), while maintaining remarkable transport rates. These results outperform most literature‐reported nearly all commercially available membranes. This study validates novel applicability materials ionized angstrom‐scale versatile functionalities high‐performance acid/alkali resource
Язык: Английский
Процитировано
1
Environmental Research, Год журнала: 2025, Номер unknown, С. 121454 - 121454
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
Desalination, Год журнала: 2025, Номер unknown, С. 119053 - 119053
Опубликована: Май 1, 2025
Язык: Английский
Процитировано
0