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Photocatalytic growth of CdS, PbS, and CuxS nanoparticles on the nanocrystalline TiO2 films

Paper ID Volume ID Publish Year Pages File Format Full-Text
28117 44060 2009 8 PDF Available
Title
Photocatalytic growth of CdS, PbS, and CuxS nanoparticles on the nanocrystalline TiO2 films
Abstract

The CdS/TiO2, PbS/TiO2, and CuxS/TiO2 nanocomposites were synthesized via the photocatalytic reduction of sulfur on the surface of nanocrystalline TiO2 films. The photocatalytic synthesis produced smaller CdS nanoparticles in the comparison with the conventional chemical deposition of cadmium sulfide. The mean size of CdS nanoparticles can be varied by changing the illumination intensity and the TiO2 film calcination temperature.An AFM study of the surface structure of CdS/TiO2 and PbS/TiO2 nanocomposites showed that the photocatalytic deposition results in formation of the polycrystalline 7–80 nm (CdS) or 20–30 nm (PbS) long nanorods. Spatial separation of the photogenerated charge carriers in CdS/TiO2 and PbS/TiO2 nanocomposites was assumed to be the driving force of the formation of such elongated metal sulfide nanoparticle agglomerates.

Keywords
Semiconductor nanoparticles; Photocatalysis; Photosynthesis; Titanium dioxide; Cadmium sulfide; Lead sulfide; Copper sulfide; Nanocomposites
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 203, Issues 2–3, 15 April 2009, Pages 137–144
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