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Fluorescence modulation and photodegradation characteristics of safranin O dye in the presence of ZnS nanoparticles

Paper ID Volume ID Publish Year Pages File Format Full-Text
27907 44049 2009 5 PDF Available
Title
Fluorescence modulation and photodegradation characteristics of safranin O dye in the presence of ZnS nanoparticles
Abstract

ZnS nanoparticles were synthesized using a chemical precipitation method and were characterized with FTIR, transmission electron microscope (TEM), X-ray diffraction analysis (XRD) and UV–vis absorption. XRD analysis shows that the diameter of the particles is 1.6 nm. The interaction between ZnS nanoparticles and safranin O (SO) dye was studied with UV–vis absorption as well as fluorescence emission and excitation spectra. The results show fluorescence enhancement from dye molecules with nanoparticles upon excitation at 325 nm. In contrast, the fluorescence of the dye monitored at 520 nm is quenched by ZnS nanoparticles. ZnS nanoparticles were used as a photocatalyst in order to degrade SO dye. A maximum degradation efficiency of 51% of the dye has been achieved in the presence of ZnS as a nanophotocatalyst at pH 7. Photodegradation of the dye follows second-order kinetics.

Keywords
Nanoparticles; ZnS; Fluorescence; Dye; Photocatalyst; Degradation
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Fluorescence modulation and photodegradation characteristics of safranin O dye in the presence of ZnS nanoparticles
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 205, Issues 2–3, 25 June 2009, Pages 151–155
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