Owing to the oxidizing, catalytic ability, and adsorbing property, graphene-based composites and their derivatives have been an ideal component for water purification and thereof. The colossal poly-aromatic π−π network and oxygen-rich groups within the functionalized graphene materials play a decisive interaction with the water pollutants viz. agricultural run-off, industrial dye effluents, and bio-medical waste via electrostatic interactions, hydrogen bonding, and photon enriched oxidations.

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... ong various pollutant dyes, malachite green (MG), methylene blue (MB), and methyl orange (MO) have been used extensively by aqua cultural farms, tanneries, research fraternities, and textile industries due to their multifarious usage. This review unveils the cost-effective graphene preparation from various chemical synthesis processes over other conventional methods and its effectiveness in removing MG, MB, and MO with composites comprising carbonaceous materials, metal oxides, metal hybrids, and conducting organic polymers. The adsorption capacities, pseudo-1st order kinetics, degradation efficiency, and pH had been highlighted chronologically to draw a conclusive nature of graphene and its derivatives as a potential remedial against these three pollutant dyes. This article also focused on various emerging materials that had been used with functionalized graphene recently to enhance degradation efficiency and expunge multiple toxic dyes for advanced water treatment processes.