Green synthesis of nanoparticles is an environmentally friendly method, in which water solvent are used. In this study, the biosynthesis of silver nanoparticles (Ag-NPs) was performed by using walnut (Juglans regia L.) leaf extract. Walnut leaf contains a variety of che
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Green synthesis of nanoparticles is an environmentally friendly method, in which water solvent are used. In this study, the biosynthesis of silver nanoparticles (Ag-NPs) was performed by using walnut (Juglans regia L.) leaf extract. Walnut leaf contains a variety of chemicals, including tannins, flavonoids, vitamins, plant acids and naphthoquinone. The extract of walnut (Juglans regia L.) leaf as the reducing agent is used for the synthesis of silver nanoparticles. The silver nanoparticles have been characterized by scanning electron microscopy (SEM), Energy dispersive X-ray (EDAX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and UV-Visible spectroscopy. UV-Vis spectrum exhibit an absorption band at around 400-450 nm suggestion the formation of silver nanoparticles. The observed peak at about 425 nm is related to the surface plasmon resonance of silver nanoparticles. The effects of operational parameters in the synthesis of silver nanoparticles such as silver nitrate salt concentration, extract volume, temperature and time was studied. The results showed that silver nitrate concentration 6 mM, extract volume 200 µlit, temperature 90°C and time 40 min was the optimum amounts.
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