[en] In this work, physico-chemical properties and photocatalytic activity of three types of dried or dried and calcined TiO2 materials, synthesized by the cogelation method, were studied: (i) a pure TiO2 xerogel ; (ii) TiO2 xerogels doped with Ag ; (iii) TiO2 xerogels co-doped with Ag and P. The presence of silver nanoparticles was observed by transmission electron microscopy (TEM) and the oxidation state of silver after calcination was examined by temperature-programmed reduction (TPR) measurements. The physico-chemical properties of xerogels were characterized by X-ray diffraction (XRD), diffuse reflectance UV-Vis spectroscopy (DR UV-Vis) and from nitrogen adsorption-desorption isotherms. The photocatalytic activity of the samples was quantified for the p-nitrophenol degradation under visible light.
Disciplines :
Materials science & engineering Chemical engineering
Author, co-author :
Bodson, Céline ; Université de Liège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Heinrichs, Benoît ; Université de Liège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Tasseroul, Ludivine ; Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Bio-industries
Bied, Catherine
Mahy, Julien ; Université de Liège > Department of Chemical Engineering > Génie chimique - Procédés et développement durable
Wong Chi Man, Michel
Lambert, Stéphanie ; Université de Liège > Department of Chemical Engineering > Department of Chemical Engineering
Language :
English
Title :
Efficient P- and Ag-doped titania for the photocatalytic degradation of waste water organic pollutants
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