Abstract
This work presents synthesized nano-sized particles of copper oxide nanoparticles (CuONPs) from three different citrus peels extract. The as prepared nano sized crystalline particles were characterized with UV-Vis, FTIR, Zeta potential, XRD, cyclic voltammetry (CV) and TEM. The UV spectra of CuONPs from grape (GPE), lemon (LPE) and orange (OPE) peel extracts showed maximum absorption peaks at 320 nm, 326 nm and 337 nm respectively. The energy band gaps were calculated to be 2.78 eV, 2.74 eV and 2.23 eV for CuONPs/GPE, CuONPs/LPE and CuONPs/OPE respectively. The average crystalline spherical sizes for CuONPs from TEM were found to be 5.13 ± 0.67 nm, 3.92 ± 0.55 nm and 4.63 ± 0.7 nm for CuONPs/GPE, CuONPs/LPE and CuONPs/OPE respectively. The comparative CV studies of the bare screen print electrode (SPE) and the modified SPE with CuO NPs from the peel extracts GPE, LPE and OPE respectively, showed that the green synthesized NPs are good catalyst with pronounced current response as compared to the bare SPE in the order CuO NPs/GPE, CuO NPs/OPE and CuO NPs/LPE. The result reveal that the CuONPs from GPE has the best electrocatalytical properties, and suggesting that the synthesized CuONPs can be used in electrochemical sensor fabrication.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
