Green synthesis with antibacterial investigation of Copper nanoparticles using Azadirachta indica (neem) leaf extract

Abstract

In the present work, green mediated synthesis of copper nanoparticles has wide interest due to its inherent features such as eco-friendliness and low costs. The resulting copper nanoparticles were characterized by X-ray diffraction (XRD) to study the crystalline nature of the synthesised copper nanoparticles. The functional group of the copper nanoparticles was analysed by Fourier transform infrared spectroscopy (FTIR) and energy dispersive spectroscopy (EDAX) was used to detect the presence of elemental copper. The antibacterial activity against Gram positive microorganisms such as Bacillus cereus and Staphylococcus aureus, Gram negative microorganisms such as E.coli and Klebsiella pneumonia were studied. The zone of inhibition reveals the good antibacterial activity against these human pathogenic bacterias.