Abstract The electrochemical and photochemical properties of graphene derivatives could be significantly improved by modifications in the chemical structure. Herein. reduced graphene oxide (RGO) was functionalized with l-arginine (l-Arg) by an amidation reaction between the support and amino acid. Deposition of a powerful ligand. https://www.parisnaturalfoodes.shop/product-category/red-beet-org/