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Photodegradation of benzene, toluene and xylenes under visible light applying N-doped mixed TiO2 and ZnO catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
54484 47011 2015 7 PDF Available
Title
Photodegradation of benzene, toluene and xylenes under visible light applying N-doped mixed TiO2 and ZnO catalysts
Abstract

•Nitrogen doped TiO2/ZnO photocatalysts were synthesised and characterised.•Nitrogen doping reduced the band gap energy by 0.48 eV.•Benzene, toluene and xylene solutions were 99% degraded in 240 min.

N-doped TiO2/ZnO catalysts were prepared by sol–gel technique and calcined at 380 and 500 °C. Its photocatalytic activity was evaluated in the photodegradation of benzene, toluene and xylenes (BTX) under visible-LED light and compared with the undoped TiO2/ZnO activity. The amount of doped nitrogen was found to be 0.64 at%. Concentrations of BTX were analysed by gas chromatography applying the headspace technique. The NTiO2/ZnO catalyst calcined at 500 °C led to reductions of benzene, toluene and xylenes concentrations greater than 80 wt% after 120 min of irradiation. The photocatalytic reactions followed the first order kinetics.

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Keywords
Nitrogen doped catalysts; TiO2; ZnO; Photocatalysis; BTX; Visible light
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Photodegradation of benzene, toluene and xylenes under visible light applying N-doped mixed TiO2 and ZnO catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 241, Part A, 1 March 2015, Pages 40–46
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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