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Preparation of nitrogen doped K2Nb4O11 with high photocatalytic activity for degradation of organic pollutants

Paper ID Volume ID Publish Year Pages File Format Full-Text
41236 45882 2011 8 PDF Available
Title
Preparation of nitrogen doped K2Nb4O11 with high photocatalytic activity for degradation of organic pollutants
Abstract

Nitrogen doped K2Nb4O11 (K2Nb4O11-N) has been prepared by solid state reaction between K2Nb4O11 and urea at 400 °C. K2Nb4O11-N has been characterized by XRD, SEM, XPS and UV/vis diffuse reflectance. The photodegradation of various organic pollutants in water by this material, including Orange G (OG), bisphenol A (BPA) and pentachlorophenol (PCP) have been studied at λ > 330 nm and >399 nm. The results show that the photocatalytic activity of K2Nb4O11-N at >399 nm is higher than those of K2Nb4O11 and Degussa TiO2 P25, indicating the activating effect of nitrogen doping. A mechanism for the photodegradation of organic substrates by K2Nb4O11-N is proposed.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (180 K)Download as PowerPoint slideHighlights► A new photocatalyst, K2Nb4O11-N, has been prepared and fully characterized. ► The activity of K2Nb4O11-N for OG, BPA and PCP photodegradation has been evaluated. ► A mechanism for the photodegradation of OG, BPA and PCP by K2Nb4O11-N is proposed.

Keywords
Photodegradation; Niobate; Nitrogen-doped; Organic pollutants
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Preparation of nitrogen doped K2Nb4O11 with high photocatalytic activity for degradation of organic pollutants
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 402, Issues 1–2, 31 July 2011, Pages 23–30
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
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