1.Université Lyon 1, CNRS, UMR 5256, IRCELYON,Institut de recherches sur la catalyse et l’environnement de Lyon,Villeurbanne,France;2.Belgian Road Research Centre (BRRC),Woluwedal,Belgium;3.Laboratory of Heat Transfer and Environmental Engineering (LHTEE),Aristotle University of Thessaloniki,Thessaloniki,Greece;4.LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot,Institut Pierre Simon Laplace,Créteil,France;5.CTG Italcementi Group,Bergamo,Italy;6.Physikalische und Theoretische Chemie / School of Mathematics and Natural Sciences,Bergische Universit?t Wuppertal (BUW),Wuppertal,Germany;7.Leibniz-Institut für Troposph?renforschunge.V. (TROPOS),Atmospheric Chemistry Department,Leipzig,Germany;8.Institut de Combustion, Aérothermique,Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC,Orléans,France
Abstract:
In the recent years, photocatalytic self-cleaning and “depolluting” materials have been suggested as a remediation technology mainly for NOx and aromatic VOCs in urban areas. A number of products incorporating the aforementioned technology have been made commercially available with the aim to improve urban air quality. These commercial products are based on the photocatalytic properties of a thin layer of TiO2 at the surface of the material (such as glass, pavement, etc.) or embedded in paints or concrete. The use of TiO2 photocatalysts as an emerging air pollution control technology has been reported in many locations worldwide. However, up to now, the effectiveness measured in situ and the expected positive impact on air quality of this relatively new technology has only been demonstrated in a limited manner. Assessing and demonstrating the effectiveness of these depolluting techniques in real scale applications aims to create a real added value, in terms of policy making (i.e., implementing air quality strategies) and economics (by providing a demonstration of the actual performance of a new technique).
