We report the synthesis of medicinal plant, Vernonia amygdalina Del. mediated green copper oxide nanoparticles (VeA-CuO NPs). The presence of two absorbance maxima, λmax 1 and λmax 2 at 436 nm and 452 nm, respectively confirms a mixture of biomolecules surface amalgamated CuO NPs with different morphological features. The FT-IR spectra of the plant leaf extract and VeA-CuO confirmed the efficient role of biomolecules as capping and stabilising agents. The XRD patterns of NPs approved high crystallinity of CuO. The purity of the NPs was corroborated by SEM-EDAX analysis. The average particle size of the NPs was found to be 19.68 nm. In addition, the combined TEM, HRTEM and SAED analysis substantiated the presence of CuO with a d-spacing value of 0.2854 nm, which conformed to CuO (1 1 1). The antibacterial assay revealed that VeA-CuO NPs were synergistic in their influence versus bacterial strains, S. aureus, E. coli, P. aeruginosa, and E. aerogenes. The uppermost zone of inhibition of 15 mm was observed for E. aerogenes. The bioactive compounds capped around the CuO NPs served the effective role in disrupting the cell wall of bacterial strains. The degradation efficiencies for Indigo carmine (IC) and Malachite green (MG) dyes by NPs were found to be 95% and 91%, respectively. The lowest degradation half-life was recorded to be 16.55 min for MG dye. In addition, the better electrode stability revealed by CV and EIS studies, confirms the multi-functional nature of VeA-CuO NPs, these CuO NPs exhibited multifunctional applications.

我们报告了药用植物杏仁斑鸠菊介导的绿色氧化铜纳米粒子 ( VeA -CuO NPs) 的合成。436 nm 和 452 nm 处的两个吸光度最大值 λmax 1 和 λmax 2 的存在分别证实了具有不同形态特征的生物分子表面合并的 CuO NP 的混合物。植物叶提取物和VeA的 FT-IR 光谱-CuO 证实了生物分子作为封端剂和稳定剂的有效作用。NPs 的 XRD 谱证实了 CuO 的高结晶度。纳米颗粒的纯度通过 SEM-EDAX 分析得到证实。发现纳米颗粒的平均粒径为 19.68 nm。此外，TEM、HRTEM 和 SAED 的组合分析证实了 CuO 的存在，d 间距值为 0.2854 nm，符合 CuO (1  1  1)。抗菌试验表明，VeA -CuO NPs 对细菌菌株、金黄色葡萄球菌、大肠杆菌、铜绿假单胞菌和产气大肠杆菌的影响具有协同作用. 观察到产气肠杆菌的最高抑制区为 15 mm。覆盖在 CuO NPs 周围的生物活性化合物在破坏细菌菌株的细胞壁方面起到了有效的作用。发现 NP 对靛蓝胭脂红 (IC) 和孔雀石绿 (MG) 染料的降解效率分别为 95% 和 91%。MG 染料的最低降解半衰期记录为 16.55 分钟。此外，CV 和 EIS 研究显示出更好的电极稳定性，证实了VeA -CuO NPs 的多功能性，这些 CuO NPs 表现出多功能应用。