Paper Title
Green Synthesis and Antibacterial Activity of Copper Oxide Nanoparticles

Abstract
Noble metal nanoparticles found many applications in different fields such as catalysis, photonics and electronics, because of their unique optical, electronic, mechanical, magnetic, and chemical properties. The use of plant leaves extract in the biosynthesis of nanostructured materials can be eco-friendly, non-toxic and cost effective approach. Biomolecules present in plant extracts can be used to reduce metal ions to nanoparticles in a single-step green synthesis process. In this study, we report a facile and green synthesis of copper oxide nanoparticles (CuO NPs) using Ocimum basillicum leaf extract. The biosynthesized copper oxide nanoparticles were characterized by UV-vis spectroscopy and scanning electron microscopy (SEM). The particles are crystalline in nature with average size 24 nm. The synthesized CuO NPs are highly stable and have significant effect on both Grampositive and Gram-negative bacteria. Keywords- Copper nanoparticle, Green synthesis, Antibacterial activity