| 초록 |
Dispersion of neat carbon nanotubes (CNTs) in an aqueous solution was hardly achieved owing to its hydrophobic surface properties. In this work, multi-walled-CNTs (MWCNTs) were partially oxidized in the presence of KMnO4 and the degree of oxidation was controlled by adjusting the oxidation conditions. At the optimized conditions, the oxidation process can generate oxygen-functional groups on the surface of MWCNTs and some MWCNTs were unzipped to form graphene oxide nanoribbon (GONR). The hybrid materials of CNT/GONR showed enhanced dispersion in an aqueous solvent and formed hydrogel at the concentration of 40 mg/mL. Large-area nanofiltration membranes could be fabricated by coating the CNT/GONR hydrogel with a slot die coater and the membrane can filter several nanoscale dyes with high water flux with excellent stability in harsh conditions. |
