RESEARCH ARTICLE


Combination of Adsorption on Activated Carbon and Oxidative Photocatalysis on TiO2 for Gaseous Toluene Remediation



Juan Matos*, 1, Andreína Garcia1, Jean-Marc Chovelon2, Corinne Ferronato2
1 Engineering of Materials and Nanotechnology Centre, Venezuelan Institute for Scientific Research, 20632, Caracas 1020-A, Venezuela
2 IRCELYON, UMR-CNRS 5256, Université de Lyon, Villeurbanne 69626, France


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© 2010 Matos et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Engineering of Materials and Nanotechnology Centre, Venezuelan Institute for Scientific Research, 20632, Caracas 1020-A, Venezuela; E-mail: jmatos@ivic.ve


Abstract

The influence of activated carbon on the activity of TiO2 in toluene photooxidation was studied to verify the efficiency of both materials working ensemble. Results showed that surface pH and more strongly the surface area of activated carbon influence the TiO2 photoactivity. Results suggest that toluene adsorbed on carbon diffuses to TiO2 where photooxidation takes place. In conclusion, TiO2-activated carbon was able to perform the photooxidation of toluene for at least two consecutive runs more efficiently than TiO2 alone. Combination of adsorption on activated carbon and oxidative photocatalysis on TiO2 is a promising direction for removal of pollutant from air

Keywords: Photocatalysis, toluene, TiO2, activated carbon.