Synthesis and characterization of two dimensional graphene lamellae based PAn nanocomposites

Novel room temperature synthesis method for graphene lamellae (GL) has been developed by using wet electrochemical route. Cyclic voltammetry and current transient studies were performed to explore the possibility of periodic precursor intercalation in the graphite. The synthesis parameters have been optimized and discussed. The GL sample quality and its mono-layered nature has been examined by Raman spectroscopy and scanning tunneling microscopy. Polyaniline (PAn) nanocomposite was prepared by in-situ doping/mixing of the two dimensional GL material through a novel electrochemical oxidative polymerization method. I–V characteristics of as prepared GL-PAn nanocomposite exhibits low resistance per unit length. The as prepared GL–PAn nanocomposites further investigated using optical absorption spectroscopy show GL dependent bulk heterostructure charge transfer properties. Prospects of GL-PAn nanocomposites in photovoltaic conversion have also been discussed.