title: Synthesis, characterization, PL properties, photocatalytic and antibacterial activities of nano multi-metal oxide NiO⋅CeO2⋅ZnO.
abstract: A novel multi-metal nanocomposite, NiO⋅CeO2⋅ZnO has been prepared by co-precipitation of their carbonates from aqueous solutions of the metal nitrates following calcination and annealing 5 h at 450°C and 10 h at 950°C. NiO⋅CeO2⋅ZnO has been characterized by XRD, SEM, EDS, IR and PL spectra. The crystallite size of the as-synthesized sample varies in the range of 14-23 nm and those of the annealed sample in the range of 17-50 nm. Emissions of NiO⋅CeO2⋅ZnO have been observed in UV (NBE emission) and visible region at different excitations. Excitation wavelength dependent PL behavior of NiO⋅CeO2⋅ZnO has been observed in acetone at room temperature. This PL property is in disagreement with Kasha's rule of excitation wavelength dependence of emission spectrum. Photocatalytic as well as anti-bacterial activities were studied.
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: Tanzir
authors.initials: T
authors.lastname: Ahmed
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: Department of Genetic Engineering and Biotechnology, Shah Jalal University of Science and Technology, Sylhet, Bangladesh.
authors.forename: Abdul Kalam
authors.initials: AK
authors.lastname: Azad
authors.affiliation: Department of Genetic Engineering and Biotechnology, Shah Jalal University of Science and Technology, Sylhet, Bangladesh.
authors.forename: Kulsuma
authors.initials: K
authors.lastname: Begum
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D001424:Bacterial Infections / Q000188:drug therapy; D002384:Catalysis; D002563:Cerium / Q000737:chemistry* / Q000494:pharmacology; D006801:Humans; D008027:Light; D049449:Luminescence; D053761:Nanocomposites / Q000737:chemistry / Q000648:ultrastructure; D009532:Nickel / Q000737:chemistry* / Q000494:pharmacology; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D002563:Cerium; C030583:ceric oxide; D009532:Nickel; C028007:nickel monoxide; D015034:Zinc Oxide
keywords: Metaloxide; Multi-metal; Nanocomposite; Photocatalyst; Photoluminescence