Ultramicroporous Troger's Base Framework Membranes With Ionized Sub-nanochannels for Efficient Acid/Alkali Recovery.

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 a significant challenge in achieving concomitant H⁺/OH⁻ permselectivity for simultaneous acid and alkali recovery. To address this issue, the charged microporous polymer framework membranes are developed, featuring rigid Tröger's Base network chains constructed through a facile sol-gel process. The intrinsic ultramicropore confinement and quaternary ammonium-charged functional groups provide ultrahigh size-sieving capability and enhanced Donnan exclusion for H⁺/OH⁻ selectivity; meanwhile, the

SUBMITTER: Sun H 

PROVIDER: S-EPMC11884555 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature