Enhanced electro-oxidation of urea based on nickel nanoparticle decorated reduced graphene oxide /PEDOT:PSS composite

A facile two-step systematic plan of action was used for preparation of nanocomposite of reduced graphene oxide (RGO) doped poly (3,4-ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS) decorated with nickelnanoparticles (NiNPs) onto a glassy carbon electrode (GCE). Composites of PEDOT:PSS and RGO have been prepared by mixing of each component solution and have been fabricated as a beneficial substrate for NiNPs. NiNPs were electrodeposited on the PEDOT-RGO support by applying constant potential to nickel ions solutions. Then, Ni/PEDOT-RGO/GCE employed as efficient electro catalyst for electro oxidation of urea. The electrocatalytic properties of Ni NPs/PEDOT-RGO modified glassy carbon electrode toward the oxidation ofurea was analyzed by cyclic voltammetry (CV) and chronoamperometry (CA). Such studies evidenced the high electro catalytic activity of Ni NPs and mixed PEDOT-RGO, which is mainly ascribed to the good electrochemical activity of PEDOT-RGO composites and the well-dispersed NiNPs on the surface of PEDOT-RGO composite.