Electrochemical reduction of CO2 on Ni (OH)2 doped water dispersible graphene under different electrolyte conditions

Abstract

Association of the cathodic operation of Ni(OH)2 doped water dispersible graphene (WDG) nanocomposite with three different electrolytes (NaHCO3, KHCO3, and NaCO3) with the help of carbon dioxide (CO2) electrochemical reduction is presented in this research. Graphene in short time is effectively synthesized and Ni(OH)2 doped on WDG by electrochemical method, structure, morphology and characterization analysis by X-ray diffraction, scanning electron microscope, transmission electron microscope and Raman spectroscopy. CO2 is effectively reduced to carbon monoxide (CO) at enhanced situation. Fourier transform infrared spectroscopy, which is used to exanimate integrated Ni(OH)2–WDG nanocomposite surfaces so as to uncover the carbonate ions and CO during reduction at three different electrolytes. The electron charge resistance of the nanocomposite is investigated by using electrochemical impedance spectroscopy analysis. Analysis of the Ni(OH)2–WDG nano composite was performed to decouple electrochemical reduction processes of CO2 to CO at different electrolytes by cyclic voltammetry and linear sweep voltammetry.