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Mechanism of enhanced photocatalysis with polyhydroxy fullerenes

Paper ID Volume ID Publish Year Pages File Format Full-Text
48299 46500 2008 6 PDF Available
Title
Mechanism of enhanced photocatalysis with polyhydroxy fullerenes
Abstract

Polyhydroxy fullerenes (PHF) have been applied for increasing the photocatalytic degradation rate of TiO2. Scavenging of photo-generated electrons and therefore higher generation of hydroxyl radicals was hypothesized as the mechanism for the observed enhancement. The present study confirms the increase in generation of hydroxyl radicals with electron paramagnetic resonance (EPR) spectroscopy. The concentration of hydroxyl radicals generated by a mixture of TiO2 and PHF was up to 60% greater than the concentration obtained without PHF. These results are consistent with the observed enhancement in dye degradation and microbial inactivation experiments. The current study also demonstrates that PHF can improve the photocatalytic activity of different TiO2.

Keywords
EPR; Hydroxyl radicals; Titanium dioxide; Escherichia coli; Procion red; Degussa P25; Anatase; Nanoparticles; Disinfection; Fullerols
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 79, Issue 4, 8 March 2008, Pages 376–381
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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