The effect of temperature on green synthesis of silver nanoparticles
Nabeel W. Mamdooh, Ghassan Adnan Naeem
Abstract
This study, performed the green synthesis of silver nanoparticles at different temperatures using a cost-effective and environmentally friendly technique using Ruta leaf extract as a reducing agent for silver. AgNPs were characterized by UV-Vis spectroscopy, infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), EDX, and dynamic light scattering (DLS). The silver nanoparticles synthesized biologically were confirmed by changing their color from colorless to yellow and finally to brown. UV-visible spectroscopy showed that a blue shift of the surface plasmon absorption peak with increasing temperature. X-ray diffraction results showed the crystalline nature of AgNPs with a face-centered cubic structure (FCC). The stability and distribution size were revealed using DLS analysis. FESEM showed the formation of spherical nanoparticles less than 100 nm in size. The EDX technique showed that the presence of the silver component, which comes from AgNPs. The efficacy of silver nanoparticles prepared against bacteria of Staphylococcus aureus was tested, it was observed that the silver concentration has an influential role in inhibiting the bacteria.