Investigation of local environment around rare earths (La and Eu) by fluorescence line narrowing during borosilicate glass alteration - Université Claude Bernard Lyon 1 Accéder directement au contenu
Article Dans Une Revue Journal of Luminescence Année : 2014

Investigation of local environment around rare earths (La and Eu) by fluorescence line narrowing during borosilicate glass alteration

Résumé

The local environment of europium in soda-lime borosilicate glasses with a range of La2O3 content was probed by continuous luminescence and Fluorescence Line Narrowing (FLN) to investigate the local environment of rare earth elements in pristine and leached glass. After aqueous leaching at 90 °C at pH 7 and 9.5, rare earths were fully retained and homogeneously distributed in the amorphous alteration layer (commonly called gel). Two separate silicate environments were observed in pristine and leached glasses regardless of the lanthanum content and the leaching conditions. A borate environment surrounding europium was not observed in pristine and leached glasses. During glass alteration, OH groups were located around the europium environment, which became more organized (higher symmetry) in the first coordination shell.
Fichier non déposé

Dates et versions

hal-02309841 , version 1 (09-10-2019)

Identifiants

Citer

E. Molieres, Gérard Panczer, Yannick Guyot, P. Jollivet, O. Majerus, et al.. Investigation of local environment around rare earths (La and Eu) by fluorescence line narrowing during borosilicate glass alteration. Journal of Luminescence, 2014, 145, pp.213-218. ⟨10.1016/j.jlumin.2013.07.051⟩. ⟨hal-02309841⟩
27 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More