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

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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

Foam, photocatalyst, water treatment, air treatment, TiO2, diuron, methylethylketone

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