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A simple procedure to quantitatively assess the photoactivity of titanium dioxide films

Paper ID Volume ID Publish Year Pages File Format Full-Text
27794 44043 2010 6 PDF Available
Title
A simple procedure to quantitatively assess the photoactivity of titanium dioxide films
Abstract

A simple and inexpensive procedure based on the bleaching of orange II (acid orange 7) solution has been developed in order to quantitatively assess the photocatalytic activity of titanium dioxide thin films. The influence of experimental parameters including, pH and light flux density on the reaction rate has been investigated. The results of this study suggest that at natural pH (7.2) and low dye concentration, the mechanism responsible for the degradation of orange II is mainly photooxidation via the formation of radicals. The procedure was used to compare the photoefficiency of TiO2 films poisoned with variable amounts of sodium. The obtained results are in good agreement with the previously reported effect of sodium on the photoactivity of titanium dioxide thin films.

Keywords
Photocatalysis; Titanium dioxide; Thin films
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A simple procedure to quantitatively assess the photoactivity of titanium dioxide films
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 215, Issue 1, 5 September 2010, Pages 11–16
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
Online Support
Any Questions? feel free to contact us