abstract
Mg/Al/Ce layered double hydroxides (LDHs) intercalated with carbonate and hydroxide anions were synthesized using co-precipitation and sol-gel method. The obtained materials were characterized by thermogravimetric (TG) analysis, X-ray diffraction (XRD) analysis, fluorescence spectroscopy (FLS) and scanning electron microscopy (SEM). The chemical composition, microstructure and luminescent properties of these LDHs were investigated and discussed. The Ce-3 (+) substitution effects were investigated in the Mg3Al1-xCex LDHs by changing the Ce-3 (+) concentration in the metal cation layers from 0.05 to 10 mol%. It was demonstrated, that luminescence properties of cerium-substituted LDHs depend on the morphological features of the host lattice.
keywords
LIGHT-EMITTING-DIODES; X-RAY-DIFFRACTION; OPTICAL-PROPERTIES; GARNET PHOSPHORS; PHOTOLUMINESCENCE; FILMS; LDH; INTERCALATION; NANOCOMPOSITE; NANOPARTICLES
subject category
Chemistry; Materials Science; Mineralogy
authors
Smalenskaite, A; Vieira, DEL; Salak, AN; Ferreira, MGS; Katelnikovas, A; Kareiva, A
our authors
Groups
2 - Multifunctional Ferroic Ceramics and Nanostructures
3 - Carbon Materials, Composites and Functional Coatings
Projects
TUneable Multiferroics based on oxygen OCtahedral Structures (TUMOCS)
New nanocontainers with extended functionality based on layered double hydroxides for application in corrosion protection (NANOCONCOR)
acknowledgements
The work has been done in frame of the project TUMOCS. This project has received funding from the European Union's Horizon 2020 - Research and innovation Framework Programme under the Marie Sklodowska-Curie grant agreement No 645660. The financial support of P2020 COMPETE and FCT-Portugal through project POCI-01-0145-FEDER-016686 - PTDC/CTM-NAN/2418/2014 (NANOCONCOR) is also acknowledged.