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Enhancement in photocatalytic oxygen evolution via water oxidation under visible light on nitrogen-doped TiO2 nanorods with dominant reactive {102} facets

Paper ID Volume ID Publish Year Pages File Format Full-Text
50401 46794 2014 5 PDF Available
Title
Enhancement in photocatalytic oxygen evolution via water oxidation under visible light on nitrogen-doped TiO2 nanorods with dominant reactive {102} facets
Abstract

•We explore photo-oxidation of water over N-doped TiO2.•Surface of N-doped TiO2 nanorod is exposed with {102} facets dominantly.•Nanorods showed similar recombination of excitons to that of nanospheres.•{102} facets tend to convert water into O2 with the simultaneous suppression of ·OH.

The enhancement of O2 evolution via the oxidation of water on {102} facet dominant nitrogen-doped TiO2 (N-TiO2) nanorods is described. N-doped TiO2 nanosphere and nanorod were synthesized and subsequent NH3 treatment. 3 atomic% of nitrogen was incorporated into both anatase TiO2 nanocrystals. They show same band gap energies of 2.8 eV and similar lifetime of photo-exciton. The surface of N-doped TiO2 nanorod, however, presents much more dominant amount of {102} facets than that of nanosphere. The low overpotential of the {102} facets results in the selective generation of O2, with the simultaneous suppression of the photocatalytic formation of ·OH.

Graphical abstractN-doped TiO2 nanorods dominant with the surface of {102} facets for photocatalytic oxygen evolution via oxidation of water under the irradiation of visible light (λ ≥ 400 nm) is described.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
TiO2 nanorod and nanosphere; Photocatalysis; Visible light; Oxygen evolution
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Enhancement in photocatalytic oxygen evolution via water oxidation under visible light on nitrogen-doped TiO2 nanorods with dominant reactive {102} facets
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 43, 5 January 2014, Pages 11–15
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