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Preparation of nanosized TiO2/ZnO composite catalyst and its photocatalytic activity for degradation of methyl orange

Paper ID Volume ID Publish Year Pages File Format Full-Text
28817 44094 2008 9 PDF Available
Title
Preparation of nanosized TiO2/ZnO composite catalyst and its photocatalytic activity for degradation of methyl orange
Abstract

The shape and size of TiO2/ZnO composite nanoparticles can be manipulated by introducing surfactants and different Zn/Ti(OBu)4 molar ratios during the synthesis process. Different sizes of spherical TiO2/ZnO composite nanoparticles are obtained when sodium dodecyl benzene sulfonate (DBS) and different Zn/Ti(OBu)4 molar ratios are used. Cubic TiO2/ZnO composite nanoparticles, hexagonal nanorods, and nanobelts are obtained when sodium dodecyl sulfonate (SDS) and different Zn/Ti(OBu)4 molar ratios are used. The XRD study shows that there is no obvious difference in crystal composition of various shapes of TiO2/ZnO composite nanoparticles. The photocatalytic degradation of methyl orange shows significant variation in rate that decreases in the order: TiO2/ZnO composites >TiO2 (with surfactant but no Zn) >TiO2 (without surfactant and Zn). An optimal Zn/Ti(OBu)4 molar ratio of 0.25:1 is found to achieve the highest photocatalytic activity of TiO2/ZnO composite nanoparticles.

Keywords
TiO2/ZnO composite nanoparticles; Shape control; Photocatalytic activity
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Preparation of nanosized TiO2/ZnO composite catalyst and its photocatalytic activity for degradation of methyl orange
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 194, Issue 1, 5 February 2008, Pages 11–19
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