Synthesis and Characterization of Various Metal Ions Doped CeO2 Nanoparticles Derived from the Azadirachta Indica Leaf Extracts

Abstract

Abstract:The cerium oxide nanoparticles (CeO 2 NPs) and M 2+ doped CeO 2 NPs (M 2+ = Zn 2+ , Ni 2+ , Cu 2+ and Co 2+ ) were prepared through the Azadirachta indica (A. indica) leaf extracts. The x-ray diffraction studies confirmed that synthesized pure and M 2+ doped CeO 2 NPs were exhibited the cubic structure. The FESEM and TEM images of both pure and M 2+ doped CeO 2 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 CeO 2 NPs values as compared to that of the transition metal ions doped CeO 2 NPs emission values. The antimicrobial studies were performed against a set of gram positive (Staphylococcus aureus and Streptococcus pneumoniae) and gram negative (Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris, Klebsiella pneumonia and Shigelladysenteriae) bacterial and fungal candida albicans strain.

Metal nanoparticles produced by plants with antibacterial properties against Staphylococcus aureus

“…The phytofabricated nanoparticles of pure rare-earth metals (REM) oxides such as cerium oxide (Kannan and Sundrarajan, 2014;Parvathy and Venkatraman, 2017;Valsaraj and Divyarthana, 2019;Yadav et al, 2016;Arumugam et al, 2015;Malleshappa et al, 2015;Maqbool et al, 2016), yttrium oxide (Kannan and Sundrarajan, 2015), lanthanum oxide (Bhat et al, 2015), gadolinium oxide (Rajan et al, 2019), dysprosium oxide (Gopinath et al, 2017), ytterbium oxide (Muthulakshmi and Sundrarajan, 2020) etc. have been shown to be good antibacterial nanotherapeutic agent against S. aureus.…”