Home-prepared anatase, rutile, and brookite TiO2 for selective photocatalytic oxidation of 4-methoxybenzyl alcohol in water: reactivity and ATR-FTIR study

TiO 2 catalysts of anatase, rutile and brookite phase were prepared at low temperature and tested for carrying out the photocatalytic partial oxidation of 4-methoxybenzyl alcohol to 4-methoxybenzaldehyde ( p -anisaldehyde) in organic-free water suspensions. Traces of 4-methoxybenzoic acid and open-r...

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Bibliographic Details
Published in:Photochemical & photobiological sciences 2009-01, Vol.8 (5), p.663-669
Main Authors: Augugliaro, Vincenzo, Loddo, Vittorio, López-Muñoz, María José, Márquez-Álvarez, Carlos, Palmisano, Giovanni, Palmisano, Leonardo, Yurdakal, Sedat
Format: Article
Language:English
Subjects:
Biochemistry
Biomaterials
Chemistry
Physical Chemistry
Plant Sciences
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Summary:TiO 2 catalysts of anatase, rutile and brookite phase were prepared at low temperature and tested for carrying out the photocatalytic partial oxidation of 4-methoxybenzyl alcohol to 4-methoxybenzaldehyde ( p -anisaldehyde) in organic-free water suspensions. Traces of 4-methoxybenzoic acid and open-ring products were the only by-products present, CO 2 being the other main oxidation product. Rutile exhibited the highest yield to p -anisaldehyde (62% mol) at a rate of the same order of magnitude of that showed by the other samples. Commercial rutile and anatase photocatalysts were also used for the sake of comparison. The samples have been characterised by an in situ ATR-FTIR investigation carried out in conditions simulating the photoreaction ones.
ISSN:1474-905X
1474-9092
DOI:10.1039/b818353h