title: Photoluminescence, photocatalytic and antibacterial activities of CeO2·CuO·ZnO nanocomposite fabricated by co-precipitation method.
abstract: A novel tri-metallic oxide nanocomposite CeO2·CuO·ZnO has been synthesized by a simple co-precipitation method. The nanocomposite has been characterized by XRD, SEM, EDS, FTIR and PL spectra. The crystallite size of the CeO2·CuO·ZnO was calculated using XRD data. The crystallite size of the CeO2·CuO·ZnO mixed metal oxide annealed at 600 °C is found to be in range of 15.34-44.81 nm, with an average size of 29.51 nm. Excitation at different wavelengths showed PL in UV and visible regions. It has been found that PL behavior of CeO2·CuO·ZnO is excitation wavelength dependent. This flexible PL property is conflicting to well-known Kasha's rule of excitation wavelength dependence of emission spectrum. The catalyst shows better photo-catalytic dye degradation efficiency in slightly alkaline pH in presence of H2O2. Nanocomposite CeO2·CuO·ZnO was found to be effective against pathogenic bacteria.
authors.affiliation: Department of Chemistry, Shah Jalal University of Science and Technology, Sylhet, Bangladesh. Electronic address: subhan-che@sust.edu.
authors.forename: Md Abdus
authors.initials: MA
authors.lastname: Subhan
authors.affiliation: Department of Chemistry, Shah Jalal University of Science and Technology, Sylhet, Bangladesh.
authors.forename: Nizam
authors.initials: N
authors.lastname: Uddin
authors.affiliation: Square Pharmaceuticals Ltd., Bangladesh.
authors.forename: Prosenjit
authors.initials: P
authors.lastname: Sarker
authors.affiliation: Deparment of Biotechnology and Genetic Engineering, Shah Jalal University of Science and Technology, Sylhet, Bangladesh.
authors.forename: Abul Kalam
authors.initials: AK
authors.lastname: Azad
authors.affiliation: Deparment of Biotechnology and Genetic Engineering, Shah Jalal University of Science and Technology, Sylhet, Bangladesh.
authors.forename: Kulsuma
authors.initials: K
authors.lastname: Begum
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D002384:Catalysis; D002563:Cerium / Q000494:pharmacology*; D011232:Chemical Precipitation; D003300:Copper / Q000494:pharmacology*; D005840:Gentian Violet / Q000737:chemistry; D007700:Kinetics; D049449:Luminescence; D008855:Microscopy, Electron, Scanning; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D013050:Spectrometry, Fluorescence; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D002563:Cerium; C030583:ceric oxide; D003300:Copper; D005840:Gentian Violet; D015034:Zinc Oxide; C030973:cupric oxide
keywords: Kasha’s rule; Metal oxides; Nanocomposite; Photo-catalyst; Photoluminescence