EFFECT OF CE3+ METAL IONS ON THE ANTIBACTERIAL AND ANTICANCER ACTIVITY OF ZINC OXIDE NANOPARTICLES PREPARED BY COPRECIPITATION METHOD
Objective: This study was undertaken to know about the antibacterial and anticancer activity of synthesized zinc oxide (ZnO) nanoparticles (NPs).
Methods: The ZnO NPs and different concentration of Ce3+ (0.05M, 0.10M, and 0.15M)-doped ZnO NPs were synthesized by coprecipitation method.
The synthesized nanoparticles were analyzed by X-ray diffraction (XRD) and HRSEM. The antibacterial studies were performed against a set of
bacterial strains as Gram-positive bacteria (Streptococcus aureus and Streptococcus pneumonia) and Gram-negative (Escherichia coli, Pseudomonas
aeruginosa, Proteus vulgaris, Klebsiella pneumonia, and Shigella dysenteriae) bacteria. The cytotoxic effect of ZnO and Ce-doped ZnO was analyzed in
cultured (A549) human lung cancer cell line.
Result: The XRD studies showed the wurtzite structure of nanoparticles. HRSEM analysis showed the spherical shape of ZnO and Ce-doped ZnO. The
Zn0.85Ce0.15O NPs possessed more antibacterial effect as compared to the other ZnO and Ce-doped ZnO NPs. The Zn0.90Ce0.10O NPs created the highest
cytotoxicity activity. With respect to cell death, as low a concentration of 68Â±0.05 Î¼g/ml of Zn0.90Ce0.10O NPs was good enough to cause loss of viability
of 50% of the cell as compared to ZnO and Zn1-xCexO (x=0.05 and 0.15) NPs.
Conclusion: Results from this work concluded that Zn0.85Ce0.15O and Zn0.90Ce0.10O NPs possess antibacterial and anticancer activity, respectively.
Keywords: Zinc oxide nanoparticles, Coprecipitation method, Antibacterial activity and anticancer activity, Human lung cancer cell line.
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