Facile Synthesis, Characterization and Enhanced Photocatalytic Activities of NiWO₄/Nitrogen Doped Reduced Graphene...

In this study, we report the synthesis of NiWO₄/nitrogen doped reduced graphene oxide nano composite by one-pot hydrothermal method. The NiWO₄ nano particles were dispersed uniformly on graphene sheets. The as prepared NiWO₄, NiWO₄/5% rGO and NiWO₄/N-5% rGO composites were analytically characterized by Powder X-ray diffraction (XRD), Raman spectroscopy, Diffuse reflectance spectroscopy (DRS-UV), Scanning electron microscopy (SEM) and N₂ adsorption-desorption isotherm. The photocatalytic performances of the synthesized composites were evaluated towards the photo degradation of congo red (CR) under visible light radiation. The synthesized catalysts showed remarkable photocatalytic activity in the degradation of CR. Among the catalysts NiWO₄/N-5% rGO showed the highest decolourization of congo red (92%) under visible light irradiation. This high activity is attributed to its high e^- transport property. Our results provide an invaluable methodology for designing high-performance photo-catalysts for new energy applications.