Combined Effects of Surface Charge and Pore Size on Co-Enhanced Permeability and Ion Selectivity through RGO-OCNT Nanofiltration Membranes

• Published in: Environmental science & technology Vol. 52; no. 8; pp. 4827 - 4834
• Main Authors: Zhang, Haiguang, Quan, Xie, Chen, Shuo, Fan, Xinfei, Wei, Gaoliang, Yu, Hongtao
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 17.04.2018
• Subjects: asymmetric membranes; Carbon nanotubes; Desalination; electrostatic interactions; Electrostatic properties; Filtration; graphene oxide; ions; Membrane permeability; Membrane separation; Membranes; Nanofiltration; Nanotechnology; Nanotubes; oxidation; Permeability; Pore size; Porosity; Rejection rate; Selectivity; Sodium chloride; Sodium sulfate; Surface charge; Wastewater treatment; Water treatment

Nanofiltration (NF) has received much attention for wastewater treatment and desalination. However, NF membranes generally suffer from the trade-off between permeability and selectivity. In this work, the coenhancement of permeability and ion selectivity was achieved through tuning the surface charg...