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Antibacterial and cytotoxic activities of cerium oxide nanoparticles prepared by laser ablation in liquid

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Abstract

In this work, we have prepared cerium oxide (CeO2) nanoparticles (NPs) by laser ablation in water at different laser energies. The structural and optical properties of synthesized nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Raman spectroscopy, energy dispersive X-ray (EDX), and UV-Vis absorption. XRD results confirmed that the synthesized cerium oxide NPs were crystalline in nature with cubic structure. SEM investigations show that the nanoparticles having a spherical shape with diameter ranged from 26 to 37 nm depending on the laser energy. The antibacterial activity and minimal inhibition concentration of synthesized CeO2 NPs against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa were examined. Bacterial adhesion test of cerium oxide NPs was also determined under different incubation temperatures. Cytotoxicity of CeO2 NP effect against the human throat cancer was studied. The cytotoxicity effect of CeO2 NPs synthesized at 160 mJ on the cancer cells caused a free radical releasing which causing oxidative stress. The cytotoxicity effects of ceria NPs against human throat cancer (RD rhabdomyosarcoma cell line) and mouse fibroblast L cell (L20B cell line) growth were 33% and 13%, respectively.

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Correspondence to Raid A. Ismail.

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Responsible editor: Lotfi Aleya

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Abid, S.A., Taha, A.A., Ismail, R.A. et al. Antibacterial and cytotoxic activities of cerium oxide nanoparticles prepared by laser ablation in liquid. Environ Sci Pollut Res 27, 30479–30489 (2020). https://doi.org/10.1007/s11356-020-09332-9

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  • DOI: https://doi.org/10.1007/s11356-020-09332-9

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