title: Effect of W doping level on TiO2on the photocatalytic degradation of Diuron.
abstract: In the present study, three compositions of W-doped titania nano-photocatalyst are synthesized via the sol-gel method. The powders obtained were characterized by X-ray diffraction, Raman spectroscopy and UV-visible diffuse reflectance spectroscopy. The photocatalytic performances of the different photocatalysts are tested with respect to the degradation of Diuron in water solutions under simulated solar light and visible light irradiation. The W0.03Ti0.97O2catalyst exhibits better photoactivity than the pure TiO2even under simulated solar light and visible light. This improvement in activity was attributed to photoelectron/hole separation efficiency.
authors.affiliation: Laboratoire de Physico-chimie des Matériaux et Catalyse, Faculté des Sciences Exactes, Université de Bejaia, Bejaia 06000, Algeria; Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), CNRS, Université de Strasbourg, Antenne de Saint-Avold, Université de Lorraine rue Victor Demange, Saint-Avold 57500, France E-mail: didier.robert@univ-lorraine.fr.
authors.forename: Ghania
authors.initials: G
authors.lastname: Foura
authors.affiliation: Laboratoire de Physico-chimie des Matériaux et Catalyse, Faculté des Sciences Exactes, Université de Bejaia, Bejaia 06000, Algeria.
authors.forename: Ahcène
authors.initials: A
authors.lastname: Soualah
authors.affiliation: Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), CNRS, Université de Strasbourg, Antenne de Saint-Avold, Université de Lorraine rue Victor Demange, Saint-Avold 57500, France E-mail: didier.robert@univ-lorraine.fr.
authors.forename: Didier
authors.initials: D
authors.lastname: Robert
mesh_terms: D002384:Catalysis; D004237:Diuron / Q000737:chemistry*; D008027:Light; D055668:Photochemical Processes; D011208:Powders; D014025:Titanium / Q000737:chemistry*; D014414:Tungsten / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D011208:Powders; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D004237:Diuron; D014025:Titanium; D014414:Tungsten