Abstract
Currently, the development of green metal NPs through ecofriendly technique has become a major focus of researchers. The current study highlights the antimicrobial activity of Cr<sub>2</sub>O<sub>3</sub> NPs, synthesized by <i>Cannabis sativa</i> (Bhang), <i>Azadirachta indica</i> (Neem), <i>Ocimum sanctum </i>(Tulsi) plants leaves extract. The characterization of Cr<sub>2</sub>O<sub>3</sub> NPs was attained by SEM with EDX, TEM and XRD analysis. Moreover, synthesized Cr<sub>2</sub>O<sub>3</sub> NPs were evaluated for their antimicrobial activities against fungi such as <i>P. triticena, A. niger, A. flavous, F. species </i>and bacteria such as <i>S. aureus, B. subitilis, E. coli </i>and <i>P. fluorescence</i>. The Cr<sub>2</sub>O<sub>3</sub> NPs synthesized by <i>Cannabis sativa</i> leaves extract were found to exhibit high antimicrobial activities towards all microbial species. The Cr<sub>2</sub>O<sub>3</sub> NPs shows a clear zone of inhibition at concentration 500 ppm. The results revealed that <i>P. triticena</i> was tremendously sensitive while interacting with Cr<sub>2</sub>O<sub>3</sub> nanoparticles. The outcomes of antimicrobial studies divulged that the Cr<sub>2</sub>O<sub>3</sub> NPs are more potent in comparison to the metal salts as well as plants leaves extract. Therefore, the Cr<sub>2</sub>O<sub>3</sub> NPs are supposed to be great antimicrobial agents.<div><br></div>
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