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Visible-light-activation of TiO2 nanotube array by the molecular iron oxide surface modification

Paper ID Volume ID Publish Year Pages File Format Full-Text
46638 46444 2012 7 PDF Available
Title
Visible-light-activation of TiO2 nanotube array by the molecular iron oxide surface modification
Abstract

Uniform and adhesive TiO2 nanotube arrays (TiO2-NTAs) have been prepared by a two-step anodization in ethylene glycol solution containing NH4F. The UV-light-activity of TiO2-NTAs prepared by changing the electrolytic voltage and calcination temperature was studied for the degradation of 2-naphthol. Further, the surface of TiO2-NTA has been modified with iron oxide species at a molecular scale by the chemisorption–calcination cycle technique. The iron oxide-surface modification endows TiO2-NTA with a high level of visible-light-activity, concomitantly increasing the UV-light-activity. Under optimum conditions, the iron oxide-surface modified TiO2-NTA exhibits a UV-light-activity comparable with that of highly active TiO2 particles (P-25, Degussa).

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► TiO2 nanotube arrays (NTA) were formed by a two-step anodization on Ti plate. ► The TiO2-NTA shows a UV-light-activity comparable with that of TiO2 particles. ► The surfaces of TiO2-NTA were modified with molecular iron oxides. ► The iron oxide-surface modification significantly increases the UV-light-activity. ► The iron oxide-surface modification causes a high level of visible-light-activity.

Keywords
TiO2 nanotube array; Iron oxide; Surface modification; Visible-light-photocatalyst; Environmental purification
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Visible-light-activation of TiO2 nanotube array by the molecular iron oxide surface modification
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 119–120, 30 May 2012, Pages 74–80
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