Synthesis and Characterization of Rgo Doped Nb<sub>2</sub>O<sub>5</sub> Nano Composite for Chemical Sensor Studies
M Mylarappa, Chandruvasan S, S Kantharaju, S Rekha
Abstract
It has been reported that an effective synthesis of rGO-Nb 2 O 5 composite for electrochemical sensor studies has been reported. The modified Hummer's method was used to produce reduced graphene oxide (rGO). The metal oxide (Nb 2 O 5 ) was introduced to the rGO via the hydrothermal method to form the composite. X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), and were used to examine the sample. The CV measurements show a significant improvement in electrochemical reversibility, with the specific capacitances of rGO and Nb 2 O 5 /rGO being 45 and 110 Fg -1 , respectively. These results indicate that the capacitive behavior and electron transfer of the Nb 2 O 5 /rGO nano composite was significantly higher than that of rGO. The charge-discharge curves show good symmetry and linear deviations with time change, indicating superior capacitance. This is primarily due to the electrode reversible reaction, and it has also been revealed as a type of super capacitor electrode material. The electrode materials obtained have the highest specific capacitance and excellent rate capability.