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Photodegradation of the textile dye Reactive Black 5 in the presence of semiconducting oxides

✍ Scribed by I Poulios; I Tsachpinis

Publisher: Wiley (John Wiley & Sons)
Year: 1999
Tongue: English
Weight: 257 KB
Volume: 74
Category: Article
ISSN: 0268-2575
DOI: 10.1002/(sici)1097-4660(199904)74:4<349::aid-jctb5>3.0.co;2-7

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✦ Synopsis

The photocatalytic degradation of Reactive Black 5, a textile azo dye, has been investigated in aqueous heterogeneous solutions containing semiconductor oxides as photocatalysts. The disappearance of the organic molecule follows approximately a pseudo-ürst kinetic order according to the Langmuir-Hinshelwood model. and ions have been identiüed as mineralization pro-CO 2 , NO 3 -, SO 4 2ducts. Various commercial photocatalysts were compared with respect to their decolorization efficiency, as well as the production of The eþ ect of pH and on the reaction rate was CO 2 . H 2 O 2 ascertained.

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