Fig. 1: Schematic illustration of fabricating COF membranes for desalination.
From: Covalent organic framework membrane with hourglass-shaped nanochannels for ultrafast desalination
Illustration of constructing a COF membrane with hourglass-shaped nanochannels (COF-CDN) via sequential assembly of installing amino-cyclodextrin nanoparticles (CDN) onto the mouth of COF membrane. The resulting hourglass-shaped nanochannels consist of a hydrophilic conical entrance (~1.6 nm), a hydrophobic spout (~0.5 nm), and the homo-nanochannels of COF with intrinsic nanopores (~1.4 nm). This unique architecture enhances both water permeability and ion rejection, offering improved performance for desalination applications.
