MWCNTs-COOK-assisted high positively charged composite membrane: Accelerating Li+ enrichment and Mg2+ removal

In this work, we successfully synthesized a new functional nano-additive called potassium carboxylate functionalized multi-wall carbon nanotubes (MWCNTs-COOK) and introduced it into the interfacial polymerization system to fine-tune the structure and properties of the nanofiltration (NF) membrane. The embedded MWCNTs-COOK (150 ppm) tightened the network-crosslink structure of the selective layer and contributed to a dense hydrophilic membrane...