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Functionalized Graphene Oxide: An Advanced Material for the Photocatalytic Application

Shrikant S. Maktedar, Shantilal S. Mehetre, Gopal Avashthi, Man Singh, Theerthagiri Jayaraman, Madhavan Jagannathan


Since an inception of time, carbon-based materials have been explored for the various potential applications. The graphene exists in various forms of carbon in numerous dimensions like 3D in graphite, 2D in graphene, 1D in carbon nanotube (CNT) and 0D in fullerene. The processability of 3D graphite is a challenge due to its higher stability and insolubility in organic solvents. Therefore, to increase its processability, the 3D graphite is converted into 2D graphene using wet chemical methods. We have developed a robust approach for the direct functionalization of graphene oxide without using any hazardous acylating and coupling reagents. The as prepared functionalized graphene oxide with indazole derivatives was found to be suitable for thermal and electrochemical applications. The increase in visible light absorption efficiency and rapid photo induced charge separation suggests the synergistic impact of various functionalities over the surface of graphene oxide. The GrO and f-(6-AIND) GrO exhibited the significant photocatalytic activity for the degradation of methylene blue under visible light irradiation. The photoelectrochemical support for the photocatalytic activity of GrO and f-(6-AIND) GrO was significant in the development of functional photocatalyst.

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