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β-SiC foams as a promising structured photocatalytic support for water and air detoxification

Catalysis Today, 2013, 209, 13-20

DOI: 10.1016/j.cattod.2012.12.008

 

Authors:

Amoin Natalie Kouamé¹ ², Romain Masson¹, Didier Robert², Nicolas Keller¹, Valérie Keller¹

¹  Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse (LMSPC), CNRS, University of Strasbourg, 25 rue Becquerel 67087, Strasbourg, France

²  Saint-Avold Antenna, LMSPC, CNRS, Université de Lorraine and University of Strasbourg, rue Victor Demange, Saint-Avold, France

 

Article history:

Received 29 June 2012,

Revised 7 December 2012,

Accepted 11 December 2012,

Available online 29 January 2013

Published in print 15 June 2013

 

Abstract:

The properties of selection of photocatalytic monolithic materials were briefly reviewed and in test phase alveolar open-cell self-bonded β-SiC foams with medium surface and 4500 μm mean cell size were employed to immobilize sol–gel and commercial-grade TiO2 and thus to structure flow-through photoreactors that would be effective in water and air detoxification. TiO2/β-SiC foam monoliths were characterized in terms of their morphology, pressure drop, light transmission ability, static mixer role and photocatalytic activity under UV-A. When operated in a recirculation mode, repetitive reaction cycles occurred successfully without any decrease in activity in Diuron degradation. Foams also proved efficient when used in the single-pass degradation of gaseous methylethylketone.

© 2013 Elsevier B.V.

Keywords:

Photocatalysis; TiO2; β-SiC foam; Water treatment; Diuron; Air treatment; Methylethylketone

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