Advances in graphene oxide based nanobiocatalytic technology for wastewater treatment

Construction of adsorbents with graphene and its derivatives for wastewater treatment: a review

“…GO is a popular adsorbent for the uptake of various contaminants due to its easy preparation from naturally abundant graphite, high content of oxygen groups both on basal planes and at edges (resulting in fascinating dispersibility in water media and polar organic solvents), and tunability of its structure and surface properties by various strategies such as chemical reactions and hybridization interactions. 28 The oxygen group content can be easily tailored by adjusting the oxidation conditions (e.g., by increasing the ratio of KMnO 4 to graphite during the Hummers and Offeman oxidation process 29 ). While GO sheets bearing the higher oxygen group content exhibit a higher adsorption capacity for cationic species than its counterpart with the lower oxygen group content, the latter is superior to the former when the anionic contaminants are considered the adsorbate.…”

Synthesis of NiO-Doped ZnO Nanoparticle-Decorated Reduced Graphene Oxide Nanohybrid for Highly Sensitive and Selective Electrochemical Sensing of Bisphenol A in Aqueous Samples

“…In the same context, the growth of novel and new 2D nanomaterials has drawn more and more attention to water processing to remove hazardous pollutants from it. , Graphene oxide (GO) is a 2D carbon-based nanomaterial that has a planar lattice structure comprising sp 2 bonded carbon atoms in a honeycomb-like network attached to different functional groups and also exhibiting remarkable properties, viz. high surface area, mechanical strength, conductivity, charge carrier mobility, and thermal and electronic properties. − Because of its outstanding and excellent properties, it is widely utilized for various applications, such as energy storage, lithium-ion batteries, gas sensors, catalysis, electronics, and photonic devices. − Moreover, reduced graphene oxide (rGO) is the reduction product and derivative of graphene oxide which is prepared by chemical and thermal methods. , The functionalization of reduced graphene oxide is significant for improving its electrical and mechanical properties . The surface functionalizing agents, including polymers, organic biomolecules, transition metal dichalcogenides, metal, and metal oxide nanostructures, are being used to improve and enhance the conductive features of the graphene oxide. − …”

Ionic Liquid/Functionalized Graphene Oxide as a Nano Additive for Corrosion Protection and Lubrication

“…The edges of GO are rich in carboxyl groups, whereas hydroxyl and epoxy functional groups are present in the center of GO, making GO a potential carrier for chemical reactions . The covalent modification of GO via chemical treatment and other methods can retain the sp 2 -hybridized carbon network structure of graphene while conferring novel properties to the modified GO; thus, GO is widely used in solar cells, biomedicine, wastewater treatment technology, organic catalysis, and other fields …”