Space-Confined Synthesis of Thinner Ether-Functionalized Nanofiltration Membranes with Coffee Ring Structure for Li⁺/Mg²⁺ Separation.

ABSTRACT: Positively charged nanofiltration membranes have attracted much attention in the field of lithium extraction from salt lakes due to their excellent ability to separate mono- and multi-valent cations. However, the thicker selective layer and the lower affinity for Li⁺ result in lower separation efficiency of the membranes. Here, PEI-P membranes with highly efficient Li⁺/Mg²⁺ separation performance are prepared by introducing highly lithophilic 4,7,10-Trioxygen-1,13-tridecanediamine (DCA) on the surface of PEI-TMC membranes using a post-modification method. Characterization and experimental results show that the utilization of the DCA-TMC crosslinked structure as a space-confined layer to inhibit the diffusion of the monomer not only increases the positive ch

SUBMITTER: Meng W 

PROVIDER: S-EPMC11538659 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature