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Photocatalytic degradation of hazardous Food Yellow 13 in TiO2 and ZnO aqueous and river water suspensions

Paper ID Volume ID Publish Year Pages File Format Full-Text
53681 46979 2016 10 PDF Available
Title
Photocatalytic degradation of hazardous Food Yellow 13 in TiO2 and ZnO aqueous and river water suspensions
Abstract

The photocatalytic degradation of the prevalent colourful food additive, Food Yellow 13 (FY13), was examined in TiO2 and ZnO aqueous suspensions under solar irradiation. Series of physicochemical properties of the applied photocatalysts was determined. As a benchmark of the influence of the natural conditions, photocatalytic studies were performed in the river water. Goldapa river, located in ‘The Green Lungs of Poland’, was chosen for investigations. The influence of the initial dye concentration, photocatalyst loading, pH and a buffer addition was studied. FY13 decolourization during its degradation under solar irradiation was monitored spectrophotometrically, while Raman and TGA techniques were applied to study its adsorption on the surface of TiO2 and ZnO. Photodegradation intermediates were detected and FY13 decomposition pathway was proposed on the basis of LC/ESI–MS/MS measurements. Application of the both photocatalysts led to the complete decomposition of FY13, which was accompanied by a visual decoulorization. The final degradation metabolite was identified as pyridinecarboxaldehyde. Eventually, ZnO was found to be 1.8 and 9.6 times more efficient then TiO2 in the photocatalysis process performed in aqueous and river water suspensions, respectively.

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Keywords
Heterogeneous photocatalysis; Food Yellow 13; Goldapa river; Titanium dioxide; Zinc oxide
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Photocatalytic degradation of hazardous Food Yellow 13 in TiO2 and ZnO aqueous and river water suspensions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 266, 15 May 2016, Pages 72–81
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us