Abstract
Graphene oxide (GO) has been widely used in the modification of membranes due to its excellent properties, i.e., huge specific surface area, good electrical conductivity, good hydrophilicity and various functional groups. The addition of GO in membranes were proved to exhibit improved properties in water permeability, molecular selectivity, membrane fouling mitigation and contaminants decomposition. Recently, the development of laminated GO in membranes achieved both high selectivity and high water permeability, conquering the limitations of conventional polymeric or inorganic membranes. By analyzing the separation mechanisms and the performance of GO composite membranes, this review systematically summarized the applications of GO composite membranes in three highlighted areas of environmental fields: Desalination, gas separation and wastewater treatment, with challenges discussed faced with GO composite membranes. A comprehensive communication was reviewed towards the environmental applications of GO composite membranes in three highlighted areas: Desalination, gas separation and wastewater treatment, with challenges discussed faced with GO composite membranes.
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