Polyamide nanofiltration membrane with highly uniform sub-nanometre pores for sub-1 A precision separation.

ABSTRACT: Separating molecules or ions with sub-Angstrom scale precision is important but technically challenging. Achieving such a precise separation using membranes requires Angstrom scale pores with a high level of pore size uniformity. Herein, we demonstrate that precise solute-solute separation can be achieved using polyamide membranes formed via surfactant-assembly regulated interfacial polymerization (SARIP). The dynamic, self-assembled network of surfactants facilitates faster and more homogeneous diffusion of amine monomers across the water/hexane interface during interfacial polymerization, thereby forming a polyamide active layer with more uniform sub-nanometre pores compared to those formed via conventional interfacial polymerization. The polyamide membrane formed by SARIP exhibits highl

SUBMITTER: Liang Y 

PROVIDER: S-EPMC7181833 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature