Silver nanoparticles (Ag NPs) have unique properties and display an important role in bioactivities such as antimicrobial, antiviral, antifungal, and anticancer. Stable Ag NPs were prepared by reaction of silver nitrate solution with extract of Melissa and characterized by UV-Vis spectroscopy, AFM, SEM, XRD, and Zeta potential. The resulted Ag NPs have a size range between 20 and 35 nm.
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