Journal
CATALYSIS TODAY
Volume 241, Issue -, Pages 40-46Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2014.03.042
Keywords
Nitrogen doped catalysts; TiO2; ZnO; Photocatalysis; BTX; Visible light
Funding
- CNPq
- CAPES
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N-doped TiO2/ZnO catalysts were prepared by sol-gel technique and calcined at 380 and 500 degrees 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 N-TiO2/ZnO catalyst calcined at 500 degrees 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. (C) 2014 Elsevier B.V. All rights reserved.
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