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Photocatalytic oxidation of Auramine O in the presence of semiconducting oxides
Author(s) -
Poulios I,
Avranas A,
Rekliti E,
Zouboulis A
Publication year - 2000
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(200003)75:3<205::aid-jctb201>3.0.co;2-l
Subject(s) - photocatalysis , aqueous solution , mineralization (soil science) , chemistry , kinetics , degradation (telecommunications) , inorganic chemistry , ion , photochemistry , catalysis , organic chemistry , telecommunications , physics , quantum mechanics , computer science , nitrogen
The photocatalytic degradation of Auramine O, a diarylmethane fluorescent dye, has been investigated in aqueous heterogeneous solutions containing semiconductor oxides as photocatalysts. The disappearance of the organic molecule follows approximately a pseudo‐first order kinetics according to the Langmuir–Hinshelwood model. CO 2 and NH 4 + ions have been identified as mineralization products. Various commercial photocatalysts are compared with respect to their decolorization efficiency, as well as the production of CO 2 . The effect of pH and H 2 O 2 on the reaction rate is ascertained. © 2000 Society of Chemical Industry