Advanced oxidation process; application of Sol-Gel technology; Hydrophilicity; visible absorption; pollutant degradation; TiO2 thin film
Abstract :
[en] In this work, an eco-friendly sol-gel synthesis of pure and doped TiO2 , previously developed at labscale, is applied in three different environmental applications at lab-scale and then, upscaled towards industrial applications. For each application, the TiO2 is used as a coating deposited mainly on steel substrates. The three applications are: (i) the development of a photocatalytic reactor made of a UV lamp, an ozonation part and a TiO2 photocatalytic coating to treat water from swimming pools, (ii) the development of a new generation of low energy sterilizers by an advanced oxidation process using a photocatalytic coating illuminated by a blue LED, and (iii) an easy-to-clean coating for outdoor steel. In each application, the up-scale results were similar to those obtained in the laboratory with respect to the crystallinity, the visual aspect, the hydrophilicity, and the photocatalytic properties of the produced coatings. These developments showed the possibility to bring sol-gel TiO2 products outside the laboratory towards pilot and industrial applications, and opens the way for many possible up-scaled sol-gel based environmental applications.
Disciplines :
Materials science & engineering Chemical engineering
Author, co-author :
Heinrichs, Benoît ; Université de Liège - ULiège > Department of Chemical Engineering > Ingéniérie électrochimique : matériaux et procédés pour la transformation et le stockage d'énergie
Lambert, Stéphanie ; Université de Liège - ULiège > Department of Chemical Engineering > Ingéniérie électrochimique : matériaux et procédés pour la transformation et le stockage d'énergie
Léonard, Géraldine; Department of Chemical Engineering -Nanomaterials, Catalysis & Electrochemistry, University of Liège, Liège, Belgium ; Rue du Château 13, Carmeuse, Andenne, Belgium
Alié, Christelle ; Université de Liège - ULiège > Department of Chemical Engineering > Ingéniérie électrochimique : matériaux et procédés pour la transformation et le stockage d'énergie
Douven, Sigrid ; Université de Liège - ULiège > Chemical engineering ; SWDE, Verviers, Belgium ; Liège, Belgium
Geens, Jérémy ; Université de Liège - ULiège > Department of Chemical Engineering
Daniel, Alain; AC&CS -CRM GROUP
Archambeau, Catherine ; Université de Liège - ULiège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces ; AC&CS -CRM GROUP
Vreuls, Christelle ; Université de Liège - ULiège > Département de physique > Biophysique structurale ; Environmental Department, Celabor, Research Centre, Herve, Belgium
Luizi, Frédéric ; Université de Liège - ULiège > Department of Chemical Engineering > Nanomaterials, Catalysis, Electrochemistry ; Aquatic Science S.A, Zoning des Hauts Sarts, Herstal, Belgium
Mahy, Julien ; Université de Liège - ULiège > Chemical engineering ; Centre-Eau Terre Environnement, Institut National de la Recherche Scientifique (INRS), Université du Québec, Québec, Canada
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