Green synthesis, UV characterization and antibacterial activity of copper nanoparticles derived from Nigella sativa

In recent ages, green nanotechnology has gained attraction in the synthesis of metallic nanoparticles due to their cost-effectiveness, simple preparation steps, and environmentally- friendly. In the present study, copper oxide nanoparticles (CuO NPs) were prepared using Nigella sativa leaf extract as a reducing, stabilizing, and capping agent. Bioactive copper nanomaterials are an emerging class of nano-antimicrobials providing complimentary effects and characteristics, as compared to other nano-sized copper oxide metal. The CuO NPs were characterized via UV–Vis Spectroscopy. The UV–Vis spectra of CuO NPs showed a surface plasmonic resonance band to occur at 851 nm. Furthermore, as-formed CuO NPs shown strong antibacterial activity against the Gram-positive bacteria (Bacillus Cereus, Bacillus Substillus), and Gram-negative bacteria (Pseudomonas Aureginosa, Salmonella Typhimurium, Enterobacter Aerogenus). According to the results of this investigation, green synthesized CuO NPs with Nigella sativa leaf extract may be used in biomedicine as a replacement agent for biological applications.