Membranes Pull Salt From Water Quickly
- Science Blog
“Water desalination membranes should simultaneously exhibit high water flux and high salt rejection,” says Yu Han, who led the study. Carbon nanomaterials, such as carbon nanotubes and graphene, are expected to meet these requirements because of their unique surface chemistry and propensity to stack into channels with diameters smaller than one nanometer. Yet, channel alignment and stacking difficulties make their large-scale use in membranes challenging.