Water for the Future: Hybrid Graphene Nanostructure for Sustainable Water Treatment
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With the rapidly increasing population and fast-growing economy, the sustainability of resources is limited. Particularly, clean water scarcity becomes an urgent global issue, inducing a major environmental and public health concern. A membrane technology is mainly used to separate various organic/inorganic substances and salts from contaminated water. This work aims to develop graphene-based hybrid membrane for an efficient water treatment and address the mechanism of water permeation and desalination to tailor the given nanostructure. The hybrid membrane was fabricated based on graphene oxide (GO) layers over the nylon substrate, followed by the intercalation of crown ethers along with cations. It was expected that the intercalated molecules would adjust the ion sieving within the hybrid membrane, leading to the improved water treatment performance. Furthermore, it was shown that the hybrid GO membrane maintains its robustness under various salt solutions for a long period of time.