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Zr-doped TiO2 for enhanced photocatalytic degradation of bisphenol A

Paper ID Volume ID Publish Year Pages File Format Full-Text
42117 45911 2010 9 PDF Available
Title
Zr-doped TiO2 for enhanced photocatalytic degradation of bisphenol A
Abstract

Zr ions were successfully incorporated into the bulk lattice of TiO2 by a multi-step sol–gel process. The doping of Zr ions in TiO2 lattice reached about 30%. The Zr-doped TiO2 photocatalysts exhibited much higher photocatalytic efficiency than pure TiO2 in the degradation of bisphenol A (BPA) under UV irradiation and complete mineralization of BPA was achieved. The higher photocatalytic activity of Zr-doped TiO2 was attributed to gradually upward shift of the conduction bands with increasing Zr content, thus resulting in a stronger reduction power of photogenerated electrons and contributing to the improved photoactivity. The effects of initial BPA concentration, irradiation intensity, initial solution pH and inorganic anions on the photocatalytic performance of Zr-doped TiO2 were studied. The photodegradation of BPA was found to be optimized under a basic condition at pH 9. The addition of PO43−and SO42− anions enhanced the photocatalytic reaction but NO3−and Cl− ions showed detrimental effects.

Graphical abstractZr ions were successfully incorporated into the bulk lattice of TiO2 by a multi-step sol–gel process, which induced upward shift of conduction band. The Zr-doped TiO2 exhibited significantly higher photocatalytic degradation efficiency of bisphenol A than pure TiO2. The influences of initial concentration, irradiation intensity, solution pH and inorganic anions on the performance of Zr-doped TiO2 were studied.Figure optionsDownload full-size imageDownload high-quality image (80 K)Download as PowerPoint slide

Keywords
Bisphenol A; Zr doping; TiO2; Multi-step sol–gel process
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Zr-doped TiO2 for enhanced photocatalytic degradation of bisphenol A
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 375, Issue 1, 26 February 2010, Pages 107–115
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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