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Effect of steam treatment on photocurrent and dye–titania interaction in dye-doped titania gel

Paper ID Volume ID Publish Year Pages File Format Full-Text
27891 44048 2007 6 PDF Available
Title
Effect of steam treatment on photocurrent and dye–titania interaction in dye-doped titania gel
Abstract

Thin titania-gel films containing dispersed fluorescein or alizarin were prepared by the sol–gel method and treated with steam in order to promote crystal growth of the titania particles. The incident photon to current efficiency (IPCE) value and the quantum efficiency of the photocurrent generation increased with an increase in the steam-treatment duration of the fluorescein-doped films. The quantum efficiency was improved by 14 times after 12-h steam treatment. The growth and crystallization of the titania particles by the steam treatment improved their electric conductivity. On the other hand, the photocurrent only slightly changed and the crystal slightly grew by the steam treatment in the alizarin-doped films. Alizarin molecules prevented the crystal growth of the titania gel due to their strong interaction with Ti around them.

Keywords
Photocurrent; Dye-doped titania gel; Sol–gel method; Steam treatment; Crystal growth
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Effect of steam treatment on photocurrent and dye–titania interaction in dye-doped titania gel
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 192, Issues 2–3, 15 December 2007, Pages 220–225
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