Selective nanofiltration membranes with accurate molecular sieving offer a solution to recover rare metals and other valuable elements from brines but this demands the development of membranes with precise sub-nanometer pores surpassing those available today. Here, the authors report a scalable approach for membrane fabrication in which functionalized macrocycles are seamlessly oriented via supramolecular interactions during the interfacial polycondensation on a polyacrylonitrile support layer.
- Shanshan Hong
- Maria Di Vincenzo
- Suzana P. Nunes