LAUSR

Abstract The ring-like shape of ZnCo2O4/rGO/Pt nanocomposites was synthesized by a hydrothermal method, as synthesized ZnCo2O4/rGO/Pt nanocomposites were characterized by different instrument like Raman, DRS-UV, XRD, FT-IR and FESEM. The structural conformation of ZnCo2O4/rGO/Pt nanocomposites was confirmed by XRD with an identified to the phase group’s orientation. ZnCo2O4/rGO functional group was recorded by FT-IR spectroscopy and the remarkable vibrational frequency modes were monitored by Raman spectroscopy. The pure ZnCo2O4 material observed bandgap energy is high (2.6 eV) compared with ZnCo2O4/rGO and ZnCo2O4/rGO/Pt nanocomposites, and the calculated bandgap energy was decreased from 2.6eV to 1.7eV. In this case, the proper reason is the interfacial interaction of the pure and doping materials. The synthesized ZnCo2O4/rGO/Pt samples attained a ring and sheet-like structure, after Pt doped when the surface morphology has been changed to the nanocubes like structure. The Photoluminescence properties of the ZnCo2O4/rGO/Pt nanocomposites were evaluated. The ZnCo2O4, ZnCo2O4/rGO and ZnCo2O4/rGO/Pt nanocomposites were applied for dye degradation (various organic dyes) with visible-light illumination. The obtained ZnCo2O4/rGO/Pt material possesses high photocatalytic activity (BB –Brilliant Blue) compared to other catalysts and further organic dyes of MO (Methyl Orange) and MB (Methylene Blue).