Combustion-derived CuO nanoparticles: Application studies on lithium-ion battery and photocatalytic activities

CuO nanoparticles (NPs) using Pamelo (Binomial name; Citrus maxima) fruit juice as fuel. XRD pattern confirms the monoclinic structure with C2/c point group. In FT-IR spectra peaks at 532 cm(-1) is observed for symmetrical stretching vibrations of Cu-O bonds. The UV-DRS spectrum shows characteristic absorption band at 732 nm with corresponding bandgap of 1.62 eV. TEM images show agglomerated irregular shape of nanoparticles with an average particle size of about similar to 60 nm. BET analysis shows mesoporous nature having surface area of 3.7 nm. CuO NPs was examined as anode material for the Li-ion battery and it shows specific capacity at 110 mAh g(-1) even after 150 cycles. CuO NPs showed excellent photocatalytic activity (82% in 150 min) against MB dye under visible light irradiation.

Automated summary

The use of Pamelo fruit juice for synthesizing CuO nanoparticles shows promising performance in both lithium-ion batteries and photocatalytic activities, indicating potential applications in energy storage and environmental remediation.