Effect of soaking time on the photoluminescence properties of cerium oxide nanoparticles
Nenhuma Miniatura disponível
Data
2013-07-11
Autores
Deus, R. C.
Foschini, C. R.
Spitova, B.
Moura, F.
Longo, Elson [UNESP]
Simões, A. Z.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
The structural and photoluminescence properties at room temperature of CeO2 nanoparticles synthesized by a microwave-assisted hydrothermal method (MAH) under different soaking times on KOH mineralizer added to a cerium ammonium nitrate aqueous solution were undertaken. X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Fourier transform Raman (FT-Raman) and photoluminescence (PL) measurements were employed. XRD revealed that the nanoparticles are free of secondary phases and crystallize in the cubic structure. The UV/vis absorption spectroscopy suggested the presence of intermediate energy levels in the band gap of structurally ordered powders. The most intense PL emission was obtained for nanoparticles which represent a lower particle size. © 2013 Elsevier Ltd and Techna Group S.r.l.
Descrição
Palavras-chave
A. Ceramics, B. Chemical syntheses, B. Powder metallurgy, C. X-ray diffraction
Como citar
Ceramics International.