ABSTRACT
Copper-based nanomaterials can be used in conductive films, nanofluids, catalysis, gas sensors, magnetic storage media, batteries and semiconductors and also as persuasive antimicrobial agents. The metal oxide is very much important materials because they can be used as antifungal, antioxidant, antibacterial, catalysts and in various electronic and photonic devices. The synthesis of copper nanoparticles is an active area of academic and more importantly, application research in nanotechnology. The cost-effective, environment-friendly, convenient and less time-consuming biological approach is the most developing method than the other approach. Our aim is to study, green synthesized eco-friendly, less toxic, inexpensive copper nanoparticles (CuNPs) by efficient co-precipitation method. The green synthesis had been achieved by using an aqueous solution of Punica granatum peel extract and copper sulphate solution, color change of Punica granatum peel extract was observed which proves that the formation of nanoparticles. Eco-friendly Copper nanoparticles were characterized by scanning electron microscopy (SEM), UV–VIS absorption spectroscopy and X-ray diffraction (XRD). XRD confirms the crystalline nature of synthesized particles with average size of 25 nm. A SEM image confirms crystalline nature with spherical shaped particles and UV-Visible spectroscopy confirms the band gap of green synthesized copper nanoparticles were around 2.17eV. FTIR analysis revealed that the functional groups present in the green synthesized copper nanoparticles. Furthermore, to achieve our aim, the main objective is to examine the fabricated Cu NPs were for antibacterial activity by the disk diffusion method. The CuNPs showed excellent antibacterial activity toward pathogenic bacterial strain Staphylococcus aureus (S.aureus) by the measurement of inhibition zones around each well. Thus, this green synthesis can be used for rapid and ecofriendly stable copper nanoparticles and can be used for anti-microbial, antifungal, anti-biotic, nanosensor, catalytic agent, super conducting material, solar cell applications.
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