title: Photocatalytic and antibacterial properties of phytosynthesized CeO2 NPs using Moringa oleifera peel extract.
abstract: Biosynthetic methods are alternative approaches which are much safer than the normal techniques (physical and chemical) used for the methods for synthesis of metal nanoparticles. The benefits are sample as it is economic and environment friendly. Herein present investigation, we have reported a microwave mediated eco-friendly synthetic approach for preparing cerium oxide (CeO2) nanoparticles. Here, we used Moringa oleifera peel as the stabilizing and reducing agent towards synthesize of Ce2O NPs via microwave irradiation. The NPs were further characterized using UV-Vis, FT-IR, XRD and HR-TEM techniques. The FTIR analysis confirmed the phytochemical involvement in NPs stabilization. The crystallinity of CeO2 nanoparticles are well demonstrated through X-ray Diffraction and HR-TEM. The TEM images reveal the spherical shape of the CeO2 NPs having an average size of 45nm. Additionally, these CeO2 NPs were used successfully as a catalyst in the degradation of the dye, crystal violet. Also the antibacterial activity of the synthesized CeO2 NPs was evaluated using Staphylococcus aureus (Gram positive bacteria) and Escherichia coli (Gram negative bacteria). CeO2 NPs showed better activity on E. coli than S. aureus. We have demonstrated an eco-friendly preparation of CeO2 nanoparticles, a good photocatalyst and having better antibacterial properties.
authors.affiliation: Chemistry of Heterocycles & Natural Product Research Laboratory, Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632 014, Tamilnadu, India.
authors.forename: T V
authors.initials: TV
authors.lastname: Surendra
authors.affiliation: Chemistry of Heterocycles & Natural Product Research Laboratory, Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632 014, Tamilnadu, India. Electronic address: selvarajmohanaroopan.s@gmail.com.
authors.forename: Selvaraj Mohana
authors.initials: SM
authors.lastname: Roopan
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry; D004926:Escherichia coli / Q000187:drug effects; D055772:Green Chemistry Technology; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000633:toxicity / Q000648:ultrastructure; D046529:Microscopy, Electron, Transmission; D008872:Microwaves; D029588:Moringa oleifera / Q000737:chemistry* / Q000378:metabolism; D010316:Particle Size; D010782:Photolysis / Q000187:drug effects / Q000528:radiation effects; D010936:Plant Extracts / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013211:Staphylococcus aureus / Q000187:drug effects; D014961:X-Ray Diffraction
chemical_list: D000900:Anti-Bacterial Agents; D004396:Coloring Agents; D010936:Plant Extracts; D002563:Cerium; C030583:ceric oxide
keywords: Antibacterial activity; Cerium oxide nanoparticles; Dye degradation; Green synthesis; Microwave