Abstract

The cerium oxide nanoparticles (CeO₂ NPs) and M²⁺ doped CeO₂ NPs (M²⁺ = Zn²⁺, Ni²⁺, Cu²⁺ and Co²⁺) were prepared through the Azadirachta indica (A. indica) leaf extracts. The x-ray diffraction studies confirmed that synthesized pure and M²⁺ doped CeO₂ NPs were exhibited the cubic structure. The FESEM and TEM images of both pure and M²⁺ doped CeO₂ NPs have exhibited spherical structure. From the EDAX spectral analysis, the elemental compositions were identified. The various functional groups were confirmed by FT-IR spectrum. Photoluminescence spectral analysis, small shift observed for emission of the CeO₂ NPs values as compared to that of the transition metal ions doped CeO₂ NPs emission values. The antimicrobial studies were performed against a set of gram positive (Staphylococcus aureus and Streptococcus pneumonia) and gram negative (Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris, Klebsiella pneumonia and Shigelladysenteriae) bacterial and fungal candida albicans strain

Keywords

CeO₂, Antimicrobial activity, FTIR, Photoluminscenance, FESEM, TEM