Fabrication of Reduced Graphene Oxide Membranes for Water Remediation

摘要

Reduced graphene oxide (rGO) has a huge potential for membrane applications owing to its appropriate interlayer spacing (0.34–0.37 nm), which enables it to block salt ions as small as Na+with high precision. However, fabrication of uniform rGO membranes is a great challenge because of the loss of its polar functional groups during preparation from graphene oxide (GO). Although there have been several studies on GO membranes and a few on rGO for water purification, very few attempts to understand the role of oxygen-containing functional groups in successful membrane formation.