Engineer Nanoscale Defects into Selective Channels: MOF-Enhanced Li⁺ Separation by Porous Layered Double Hydroxide Membrane.

ABSTRACT: Two-dimensional (2D) membrane-based ion separation technology has been increasingly explored to address the problem of lithium resource shortage, yet it remains a sound challenge to design 2D membranes of high selectivity and permeability for ion separation applications. Zeolitic imidazolate framework functionalized modified layered double hydroxide (ZIF-8@MLDH) composite membranes with high lithium-ion (Li⁺) permeability and excellent operational stability were obtained in this work by in situ depositing functional ZIF-8 nanoparticles into the nanopores acting as framework defects in MLDH membranes. The defect-rich framework amplified the permeability of Li⁺, and the site-selective growth of ZIF-8 in the framework defects bettered its selectivity. Specifically speaki

SUBMITTER: Lu Y 

PROVIDER: S-EPMC10247908 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature