Cross-linked laminar graphene oxide membranes for wastewater treatment and desalination: A review. (1st September 2022) - Pandey, Ravi P.
Abstract: Two-dimensional (2D) lamellar graphene oxide (GO) membranes are emerging as attractive materials for molecular separation in water treatment because of their single atomic thickness, excellent hydrophilicity, large specific surface areas, and controllable properties. To yet, commercialization of GO laminar membranes has been hindered by their propensity to swell in hydrated conditions. Thus, chemical crosslinking of GO sheets with the polymer matrix is used to improve GO membrane hydration stability. This review focuses on pertinent themes such as how chemical crosslinking improves the hydration stability, separation performance, and antifouling properties of GO membranes. Graphical abstract: Image 1 Highlights: Impact of chemical crosslinking of GO membranes is thoroughly reviewed. GO membrane hydration stability and performance are improved due to crosslinking. Crosslinking of GO membranes with aliphatic/aromatic diamines reduces swelling. Crosslinked GO membrane shows excellent antibacterial activities.