Arrêt de service lundi 11 juillet de 12h30 à 13h : tous les sites du CCSD (HAL, Epiciences, SciencesConf, AureHAL) seront inaccessibles (branchement réseau à modifier)
Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Effects of metal doping (Cu, Ag, Eu) on the electronic and optical behavior of nanostructured TiO2

Abstract : The effects of metal doping (M = Cu, Ag and Eu) were investigated in nanostructured (M-TiO2) with the objectives to define the location of metal ions in the host matrices, identifying their stable valence states and environments as well as the incidence on the structural, electronic and optical properties of M-TiO2. Sol-gel method was used for the synthesis based on the reactants as metal-acetate and titanium alkoxide with defined experimental conditions to achieve the formation of nanostructured anatase phase with metallic doping ratios about 1, 2 and 3 mol.%. The investigations of doped structures were carried out by using x-ray diffraction, Raman spectroscopy, UV–Vis absorption and electron paramagnetic resonance (EPR) which contributes to precise insights on the metal behavior in M-TiO2. Correlations of the metal states such as the stable valence and local environments were made with the crystalline domains sizes, stability of anatase phase, electrical conductivity and optical features of the different M-TiO2 samples. The photocatalytic activity of 3 mol.% doped structures was compared through a heterogeneous photocatalysis carried out for the degradation of organic dyes in solutions under Xe-source irradiation. The efficiency of this process was discussed as function of the doping peculiarities.
Type de document :
Article dans une revue
Domaine :
Liste complète des métadonnées

https://hal-univ-lemans.archives-ouvertes.fr/hal-02146071
Contributeur : Sandrine Coste Connectez-vous pour contacter le contributeur
Soumis le : lundi 3 juin 2019 - 15:43:33
Dernière modification le : mardi 12 avril 2022 - 00:32:02

Identifiants

Collections

Citation

Jesus Vargas Hernandez, Sandrine Coste, Antonieta García Murillo, Felipe Carrillo Romo, Abdelhadi Kassiba. Effects of metal doping (Cu, Ag, Eu) on the electronic and optical behavior of nanostructured TiO2. Journal of Alloys and Compounds, Elsevier, 2017, 710, pp.355-363. ⟨10.1016/j.jallcom.2017.03.275⟩. ⟨hal-02146071⟩

Partager

Métriques

Consultations de la notice

61