01513nas a2200157   4500008004100000245012200041210006900163260001300232300001200245520089400257100002501151700002101176700001901197700002001216856011901236       2019                        eng d00aFunctionalization of graphene - a critical overview of its improved physical, chemical and electrochemical properties0 aFunctionalization of graphene a critical overview of its improve  bSpringer  a139-1733 aGraphene, the 2D allotrope of carbon, is reported to be functionalized with a plethora of organic and inorganic species. This functionalization imparts significant improvement in the physical, chemical and electrochemical properties of graphene. The covalent and non-covalent functionalization of graphene with electron-rich organic moieties and heteroatoms is focused on different sections of this chapter. The focus is laid on the improvement in physical, chemical and electrochemical properties of graphene achieved through this functionalization. The enhancement in electrocatalytic activity of non-metal-doped graphene towards the oxygen reduction reaction, methanol oxidation reaction and photocatalysis is covered. Towards the end, the potential uses of functionalized graphene for selected applications like biosensors, fuel cells and dye-sensitized solar cells are also discussed.1 aSingh, Ramesh, Kumar1 aNalajala, Naresh1 aKar, Tathagata1 aSchechter, Alex  uhttps://library.ncl.res.in/content/functionalization-graphene-critical-overview-its-improved-physical-chemical-and