Electrochemical synthesis and characterization of graphene oxide based composite film

Abstract

Graphene oxide is a new type of carbon material with excellent performance, having high specific surface area and abundant functional groups on the surface. Its large number of oxygen-containing functional groups makes the carbon layers negatively charged, and positively charged cations can easily enter between the layers and prop up the layer spacing, providing favorable conditions for loading of polymers and inorganic nanoparticles. The graphene oxide composites obtained by modifying the surface of graphene oxide include polymer-based composites as well as inorganic composites, all of which show superior properties and have a wide range of applications. Composite of conductive polymers and graphene oxide has become a hot research topic because the conductive synergy between graphene oxide and conductive polymers can enhance the conductivity of the matrix and at the same time achieve structural enhancement.

1,3,5-Tris(4-cyanopyridinium-1-ylmethyl)-2,4,6-trimethylbenzenetribromide ( T0 ) in tight molecular contact with reduced graphene oxide ( rGO ) , that is, T0 / rGO, were electropolymerized and characterized. The composite shows better electrical conductivity and electron store ability. The polymerization process includes (i) molecular self-assembling of T0s on individual GO sheets yielding colloidal T0/rGO and (ii) efficient GO/rGO transformation by electrochemical method. Further studies on the properties of the composites are analyzed by Cyclic Voltammetry(CV) , Differential Pulse Voltammetry ( DPV) ,Electrochemical Impedance Spectroscopy ( EIS ) , Ultraviolet and visible spectrophotometry (UV ), Scanning electron microscope ( SEM ) images etc.