Extreme Li-Mg selectivity via precise ion size differentiation of polyamide membrane.

ABSTRACT: Achieving high selectivity of Li⁺ and Mg²⁺ is of paramount importance for effective lithium extraction from brines, and nanofiltration (NF) membrane plays a critical role in this process. The key to achieving high selectivity lies in the on-demand design of NF membrane pores in accordance with the size difference between Li⁺ and Mg²⁺ ions, but this poses a huge challenge for traditional NF membranes and difficult to be realized. In this work, we report the fabrication of polyamide (PA) NF membranes with ultra-high Li⁺/Mg²⁺ selectivity by modifying the interfacial polymerization (IP) process between piperazine (PIP) and trimesoyl chloride (TMC) with an oil-soluble surfactant that forms a monolayer at oil/water interface, refe

SUBMITTER: Peng Q 

PROVIDER: S-EPMC10954764 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature