A comparative study of co-precipitation and sol-gel synthetic approaches to fabricate cerium-substituted Mg Al layered double hydroxides with luminescence properties

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 s...

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Detalhes bibliográficos
Autor principal: Smalenskaite, A. (author)
Outros Autores: Vieira, D.E.L. (author), Salak, A.N. (author), Ferreira, M. G. S. (author), Katelnikovas, A. (author), Kareiva, A. (author)
Formato: article
Idioma:eng
Publicado em: 2019
Assuntos:
Layered double hydroxides
Co-precipitation
Sol-gel processing
Cerium substitution effects
Luminescent properties
Texto completo:http://hdl.handle.net/10773/25401
País:Portugal
Oai:oai:ria.ua.pt:10773/25401
Descrição
Resumo: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 Ce3 + substitution effects were investigated in the Mg3Al1 − xCex LDHs by changing the Ce3 + 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.

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