ABSTRACT
Graphene is a bi-dimensional layer of carbon atoms bonded in a sp2 configuration forming a honeycomb structure. This material has attracted a lot of interested since it was first discovered by Novoselov and Geim and further applied in many fields due to its high theoretical surface area, high mechanical flexibility, good electrical conductivity and high theoretical capacitance. Graphene surface can be functionalized through covalent and non-covalent strategies, achieving different types of graphene derivatives that can be applied in different fields. The different types of functionalization give graphene-based structures a wide variety of different properties. All these characteristics make graphene and its derivatives highly promising materials to be used in many fields due to its great advantages mainly its great surface versatility. The effect of the functionalization in the final properties, of graphene surfaces are revised from an experimental and theoretical point of view and the possible applications of graphene and its derivatives are discussed in this chapter.
