In this study, we report the synthesis of silver nanoparticles from cinnamon bark extract. The
physical charactrization of these silver nanoparticles was verified using UV-visible spectroscopy, scanning
electron microscopy, and powder X-ray diffraction. Size distribution of nanoparticles was in the range of 30
to 150 nm. The zeta potential was -32 mV, indicating dispersion ability. Superoxide anion radical scavenging
assay showed 82% activity for silver nanoparticles derived from cinnamon bark extract.
Keywords: Cinnamon, silver nanoparticle, SOD, UV-Vis, XRD, zeta potential
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