Eco-friendly Synthesis of Cupric Oxide Nanoparticles Using Photocatalytic and Electrocatalytic Activities in Real Sample Analysis

This study utilized coprecipitation techniques to investigate the electrochemical, structural, optical, and morphological characteristics of green-generated CuO nanoparticles. XRD showed that the crystallite size of the CuO NPs improved with 10 ml, 20 ml, and 30 ml of the Vertex Negundo leaves extract, classified as VNC10, VNC20, and VNC30, respectively, were determined to be 23 nm, 15 nm, and 11 nm. The impact of lattice strain on peak broadening of CuO-NPs was explored using Williamson-Hall analysis. FTIR spectra validated the presence of specific chemical linkages, indicating the successful synthesis of CuO NPs on the leaf extract. The band gaps of VNC10, VNC20, and VNC30 were found to be 3.05 eV, 2.40 eV, and 2.0 eV, respectively. XPS elemental composition of Vertex Negundo leaves-mediated copper oxide nanoparticles was confirmed. SEM photos examined the morphology of the CuO NPs, while EDAX confirmed their elemental makeup. VNC30 displayed an excellent photocatalytic efficacy of 95.39% in degrading dye (MB) under solar light. The CuO NPs modified electrode demonstrated higher electrocatalytic activity towards the oxidation of uric acid (UA) compared to VNC10, VNC20, and VNC30.