The biosynthesis of chromium oxide nanoparticles (CrO NPs), using as a bioreductant, for assessment of their potential nanomedicinal applications. Biosynthesized CrO NPs were characterized by x-ray diffraction, Fourier-transform infrared spectroscopy, energy dispersive x-ray spectroscopy, scanning and transmission electron microscopy, selected area electron diffraction, UV-Vis spectroscopy and ζ-potential measurement. assays were used to assess the biological properties of CrO NPs. Nanoparticles with size approximately 25-38 nm were obtained with a characteristic Cr-O vibration at 417 cm. A broad spectrum antimicrobial potential and antioxidant nature is reported. Slight inhibition of polio virus and biocompatibility at low doses was observed. We conclude a multifunctional nature of biogenic CrO NPs.
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