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Visible light-driven binary dyes synergic degradation by iodine-doped TiO2 nanocrystal film

Paper ID Volume ID Publish Year Pages File Format Full-Text
50788 46813 2012 5 PDF Available
Title
Visible light-driven binary dyes synergic degradation by iodine-doped TiO2 nanocrystal film
Abstract

We report synergistic degradation of fluorescein sodium/rhodamine B or eosin Y/rhodamine B using iodine-doped TiO2 nanocrystal film (I-TNC) under visible irradiation. The fabricated I-TNC was characterized by SEM, EDS and reflectance spectra. The degradation results showed that when Flu or EO was introduced to I-TNC/RhB system, the degradation ratio of RhB was significantly enhanced, with an eight-fold or five-fold improvement compared with that in I-TNC/RhB system free of sensitizer. The photocatalytic improvement may be explained by the mutually sensitization of binary dyes and narrowed bandgap caused by doping. Active oxygen species were evidenced to be involved in the synergic degradation.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Visible-driven binary dyes synergetic degradation by I-doped TiO2 film was assayed. ► I-doping narrows bandgap and extends photoresponse to the visible region. ► Degradation of RhB is greatly improved when Flu or EO as sensitizer was introduced. ► The synergetic degradation mechanism was discussed.

Keywords
Visible light; Iodine doping; TiO2 film; Binary dyes; Synergistic degradation
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Visible light-driven binary dyes synergic degradation by iodine-doped TiO2 nanocrystal film
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 20, 5 April 2012, Pages 94–98
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