title: Detection of adsorbed O2-species on CeO2solid impregnated with Ag2+ions during its thermal treatment under a H2atmosphere, an EPR study.
abstract: 10% Ag/CeO2solid was prepared by the impregnation method. When the solid is calcined at 400 °C, three types of Ag2+species are formed. One of them is more thermally stable compared to the others. The adsorption on the solid of O2or H2molecules gives an adsorbed O2-species on the surface, detected by electron paramagnetic resonance (EPR). The mobility of oxygen in CeO2and the nature of cations loaded on this support can be the origin of the adsorbed O2-species particularly when the solid is treated under H2molecules.
authors.affiliation: Unité de Chimie Environnementale et Interactions sur le Vivant EA 4492 (UCEIV), MREI, Université du Littoral - Côte d'Opale (ULCO), 145 avenue Maurice Schumann, 59140 Dunkerque, France. antoine.aboukais@univ-littoral.fr and Department of Chemistry, Faculty of Sciences, University of Balamand, P.O. Box. 100, Tripoli, Lebanon.
authors.forename: Mira
authors.initials: M
authors.lastname: Skaf
authors.affiliation: Unité de Chimie Environnementale et Interactions sur le Vivant EA 4492 (UCEIV), MREI, Université du Littoral - Côte d'Opale (ULCO), 145 avenue Maurice Schumann, 59140 Dunkerque, France. antoine.aboukais@univ-littoral.fr.
authors.forename: Sara
authors.initials: S
authors.lastname: Hany
authors.affiliation: Department of Chemistry, Faculty of Sciences, University of Balamand, P.O. Box. 100, Tripoli, Lebanon.
authors.forename: Samer
authors.initials: S
authors.lastname: Aouad
authors.affiliation: Unité de Chimie Environnementale et Interactions sur le Vivant EA 4492 (UCEIV), MREI, Université du Littoral - Côte d'Opale (ULCO), 145 avenue Maurice Schumann, 59140 Dunkerque, France. antoine.aboukais@univ-littoral.fr.
authors.forename: Cédric
authors.initials: C
authors.lastname: Gennequin
authors.affiliation: Laboratory of Physical Chemistry of Materials (LCPM/PR2N), Faculty of Sciences, Lebanese University, Fanar, 90656 Jdeidet El Matn, Lebanon.
authors.forename: Madona
authors.initials: M
authors.lastname: Labaki
authors.affiliation: Unité de Chimie Environnementale et Interactions sur le Vivant EA 4492 (UCEIV), MREI, Université du Littoral - Côte d'Opale (ULCO), 145 avenue Maurice Schumann, 59140 Dunkerque, France. antoine.aboukais@univ-littoral.fr.
authors.forename: Edmond
authors.initials: E
authors.lastname: Abi-Aad
authors.affiliation: Unité de Chimie Environnementale et Interactions sur le Vivant EA 4492 (UCEIV), MREI, Université du Littoral - Côte d'Opale (ULCO), 145 avenue Maurice Schumann, 59140 Dunkerque, France. antoine.aboukais@univ-littoral.fr.
authors.forename: Antoine
authors.initials: A
authors.lastname: Aboukaïs