Brookite and rutile powders as efficient photocatalystsfor air and water depolluting treatment
| Autor: | Damia, G., Guillard, C., Cassaignon, S., Durupthy, O., Colbeau-Justin, C., Herissan, A., Gregori, D. |
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| Přispěvatelé: | IRCELYON, ProductionsScientifiques, IRCELYON-Catalytic and Atmospheric Reactivity for the Environment (CARE), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | SP5 (5th International Conference on Semiconductor Photochemistry SP5 (5th International Conference on Semiconductor Photochemistry, Jul 2015, Saint Petersbourg, Russia |
| Popis: | SSCI-VIDE+CARE+CGU:DAG; International audience; Understand the differences between the various polymorphs of TiO2, anatase, rutile and brookite, constitutes an extensive work since nearly 40 years. However, it still remains animportant technical lock to solve in order to explain and improve the photocatalytic efficiency.In this way, our researches were dedicated, in a first step, to the synthesis of very well defined morphology of the three TiO2 phases with mastered shape and chemical composition [1]. Then, their photocatalytic activity in aqueous and gaseous phase was characterized using several models pollutant (formic acid, phenol and toluene). Some efficiency was correlatedto the electronic properties using Time Resolved Microwave Conductivity (TRMC) [2].These results allow us to compare the photocatalysts in the same controlled conditions. Thus a classification is realized according to the TiO2 phase and the photocatalytic activity.We highlight that similar distribution is obtained whatever the pollutant type and the studied phase (air or water). Moreover, interesting rutile and brookite powders were synthesized presenting similar or better photocatalytic activity than TiO2-P25 (Evonik), considered as the actual best commercial photocatalyst [3]. |
| Databáze: | OpenAIRE |
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