One pot green fabrication of metallic silver nanoscale materials using L. and assessment of their bactericidal activity.

In this study, the leaf extract of an important medicinal plant L. (CC) was employed as a green reducing agent to synthesise highly-stable silver nanoparticles (CCAgNPs). The reduction of Ag to Ag nanoparticles was initially observed by a colour change which generates an intense surface plasmon resonance peak at 417 nm using a UV-Vis spectrophotometer. Various optimisation factors such as temperature, pH, time and the stoichiometric proportion of the reaction mixture were performed, which influence the size, dispersity and synthesis rate of CCAgNPs. In addition, surface chemistry of synthesised CCAgNPs through Fourier transform infrared spectroscopy reveals the reducing/stabilising agent present in the aqueous extract of and synthesised CCAgNPs. Transmission electron microscopy analysis features the spherical shape of CCAgNPs with an average size of 39.74 nm. Furthermore, an X-ray diffraction study confirms that the synthesised CCAgNPs were face-centred cubic crystalline in nature. The CCAgNPs display tremendous bactericidal activity against human pathogens , , , , , and via penetrating into the bacterial cell membrane and causing failure of an internal chain reaction.