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Development of an S-doped titania nanotube (TNT) site-selectively loaded with iron(III) oxide and its photocatalytic activities

Paper ID Volume ID Publish Year Pages File Format Full-Text
48196 46496 2008 7 PDF Available
Title
Development of an S-doped titania nanotube (TNT) site-selectively loaded with iron(III) oxide and its photocatalytic activities
Abstract

We investigated an S-doped titania nanotube (TNT) loaded with Fe2O3 nanoparticles in order to improve photocatalytic activity of S-doped TNT under visible light irradiation. S-doped TNT was successfully prepared using the solid-phase method at 350 °C under aerated conditions. S-doped TNT showed photoabsorption in the 400–500 nm visible light region and showed photocatalytic activity for oxidation of acetaldehyde under visible light irradiation. Loading of Fe2O3 on S-doped TNT remarkably improved the photocatalytic activity of S-doped TNT. PA spectra measurement, which was performed in order to elucidate the mechanism of activity improvement, showed that the efficiency of charge separation between photoexcited electrons and holes was improved because the electrons were trapped by Fe2O3. Enhancement of photocatalytic activity was strongly dependent on the site of Fe2O3 nanoparticles loaded on TNT. PA spectra measurement showed that the photoexcited electrons transferred to Fe2O3 from S-doped TNT under UV light irradiation or to S-doped TNT from Fe2O3 under visible light irradiation.

Keywords
Photocatalysts; TiO2 nanotube; Visible light; S-doped TNT; Oxidation of acetaldehyde; Site-selective loading of iron oxide (III)
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Development of an S-doped titania nanotube (TNT) site-selectively loaded with iron(III) oxide and its photocatalytic activities
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 84, Issues 3–4, 1 December 2008, Pages 584–590
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