![]() silver, gold and copper) are drawing attention these days for their surprising optical, catalytic, sensing, and antimicrobial properties. In particular, the nanoparticles of coinage metals (e.g. Metal nanoparticles have already been investigated for diverse applications in the field of optoelectronics, sensors, catalysis, nanomedicine, purification technologies, and so on. The antibacterial study showed that these biogenic copper nanoparticles have potent bactericidal property toward the examined bacterial species. The antibacterial properties of these bioengineered Cu nanoparticles were tested toward a Gram-positive bacteria – Staphylococcus aureus – and two strains of Gram-negative bacteria – Escherichia coli and Pseudomonas putida. ![]() The infrared spectra detected organic bioactive molecules associated with capping and stabilization of the particle surface. High-resolution transmission electron microscopy was done to obtain information about the morphology and microstructure of the green nanoparticles. The pattern of X-ray diffraction revealed the crystallinity and different phases of the nanoparticles. The stability and gradual formation of copper nanoparticles during interaction with the extract were investigated using ultraviolet-visible spectroscopy. ![]() Here, we report on the novel green synthesis of metallic copper nanoparticles from copper sulfate solution by using the leaf extract of Heliconia psittacorum. ![]()
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