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Screen-printing of TiO2 photocatalytic layers on glazed ceramic tiles

Paper ID Volume ID Publish Year Pages File Format Full-Text
28002 44056 2008 7 PDF Available
Title
Screen-printing of TiO2 photocatalytic layers on glazed ceramic tiles
Abstract

In this work TiO2 layers have been deposited by screen-printing in common glazed ceramic tiles. These TiO2 layers were evaluated for the photocatalytic degradation of Orange II in aqueous solutions, in a batch photoreactor under visible light, and compared with TiO2 (anatase) suspensions. The photocatalytic behaviour of the TiO2 was evaluated by taking into account experimental variables which include (i) firing temperature of the TiO2 printed layer; (ii) layer thickness; (iii) operation time. Optimal processed layers showed an interesting decolourisation performance (over 90% efficiency after 7–8 h). The maximum decolourisation rate, assuming an apparent first order reaction, is over 0.050 min−1 and is close to values reported in the literature for supported TiO2 photocatalysis under UV irradiation. We anticipate that these new ceramic materials might be developed as an interesting alternative to TiO2 suspensions, for example in photocatalytic applications excusing the removal of the particles at the end of the process.

Keywords
TiO2; Screen-printed layers; Glazed ceramic substrates; Visible light photocatalysis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 197, Issues 2–3, 25 June 2008, Pages 125–131
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