Powder preparation and UV absorption properties of selected compositions in the CeO<sub>2</sub>-Y<sub>2</sub>O<sub>3</sub> system - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Solid State Chemistry Année : 2008

Powder preparation and UV absorption properties of selected compositions in the CeO2-Y2O3 system

Résumé

Several approaches have been investigated to prepare fluorite-type compositions within the (1−x) CeO2 - x YO1.5 system. The optical properties of the resulting modified-ceria materials have been characterized in order to evaluate their potential abilities as inorganic UV absorbers. Diffuse reflectance analyses reveal a strong optical absorption between 390 and 400 nm for all substituted compositions and the spectral selectivities are estimated suitable for the targeted application. Additionally, time resolved microwave conductivity (TRMC) and phenol photodegradation analyses do not indicate any photocalatytic activity for these compositions. Aqueous colloidal suspensions of the Ce0.7Y0.3O1.85 UV absorber have been carried out.

Domaines

Matériaux
Fichier principal
Vignette du fichier
Tessier_Journal of Solid State Chemistry_181_2008.pdf (2.71 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00400670 , version 1 (16-02-2016)

Identifiants

Citer

Franck Tessier, François Cheviré, Francisco Muñoz, Odile Merdrignac-Conanec, Roger Marchand, et al.. Powder preparation and UV absorption properties of selected compositions in the CeO2-Y2O3 system. Journal of Solid State Chemistry, 2008, 181 (5), pp.1204-1212. ⟨10.1016/j.jssc.2008.02.034⟩. ⟨hal-00400670⟩
111 Consultations
1401 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More