Green synthesis of CuO nanoparticles using Jasmin sambac extract: Conditions optimization and photocatalytic degradation of Methylene Blue dye

Abstract

This investigation utilized an eco-friendly method to produce copper oxide nanoparticles (CuO NPs) through the utilization of Jasminium sambac leaf extract. Optimization of pH, temperature, reaction time, and copper sulfate concentration were performed. Characterization via UV–Vis, SEM, XRD, FTIR, and EDX techniques revealed a peak at 243 nm in UV–Vis, and an FTIR band at 590 cm−1 confirmed Cu(II) ion reduction to CuO NPs. pH, temperature, reaction time, and copper sulfate concentration were identified as crucial synthesis parameters. EDX analysis indicated a composition of 75.94% copper and 24.06% oxygen. CuO NPs were dispersive, monoclinic, crystalline, and pure, with an average particle size of 13.4 nm. Photocatalytic experiments achieved 97% Methylene Blue dye degradation in 210 min, highlighting the efficacy of the green synthesis method for CuO NPs with significant photocatalytic activity in wastewater remediation.

Keywords

• Green synthesis
• CuO nanoparticles
• Photocatalysis
• Dye degradation