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Recovery of visible-light photocatalytic efficiency of N-doped TiO2 nanoparticulate films

Paper ID Volume ID Publish Year Pages File Format Full-Text
27779 44042 2008 6 PDF Available
Title
Recovery of visible-light photocatalytic efficiency of N-doped TiO2 nanoparticulate films
Abstract

Bare TiO2 and N-doped TiO2 nanoparticulate films in anatase phase were prepared on glass substrates by laser ablation of titanium target in O2, N2/O2 and NH3/N2/O2 atmospheres, respectively. The nitrogen dopant concentration increased notably when a small amount of NH3 was added into the N2/O2 mixture. The film prepared in NH3/N2/O2 exhibited enhanced photoabsorption and photocatalytic ability in the visible-light region as compared with that produced in N2/O2. However, for all films, rapid deactivations were observed with operating time, leading to a poor reusability of the catalysts. With a simple and effective approach of mild heat treatment, the photocatalytic efficiency was completely recovered and the reusability of the film was greatly improved.

Keywords
Titanium dioxide; Visible-light photocatalyst; Mild heat; Photocatalytic reusability
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Recovery of visible-light photocatalytic efficiency of N-doped TiO2 nanoparticulate films
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 193, Issues 2–3, 25 January 2008, Pages 222–227
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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
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Any Questions? feel free to contact us