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Enhanced photocatalytic activity of electrospun TiO2/ZnO nanofibers with optimal anatase/rutile ratio

Paper ID Volume ID Publish Year Pages File Format Full-Text
50919 46821 2013 5 PDF Available
Title
Enhanced photocatalytic activity of electrospun TiO2/ZnO nanofibers with optimal anatase/rutile ratio
Abstract

•ZnO, anatase & rutile composite nanofibers are synthesized by electrospinning.•Calcination temperature affects nanofiber morphology and composition.•Synergistic effects among ZnO, anatase & rutile reduce electron–hole recombination.•Optimal calcination temperature results in highest photocatalytic efficiency.

The photocatalytic characteristics of the TiO2/ZnO nanofibers synthesized by electrospinning followed by calcinating at different temperatures to alter the anatase-to-rutile ratio are investigated. The results demonstrate that the photocatalytic activity of TiO2/ZnO nanofibers is enhanced by optimizing the anatase/rutile ratio among the trade-off effects of the band-gap energy, the electron/hole recombination rate, and the surface area. When calcined at 650 °C, the TiO2/ZnO nanofibers with optimal anatase/rutile ratio (48:52) balancing these trade-off effects have the highest photocatalytic efficiency both in the degradation of RhB in liquid and conversion of NO gas.

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Keywords
TiO2/ZnO; Photocatalyst; Nanofiber; Rutile–anatase ratio; Reduced electron–hole recombination
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Enhanced photocatalytic activity of electrospun TiO2/ZnO nanofibers with optimal anatase/rutile ratio
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 37, 5 July 2013, Pages 100–104
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
Online Support
Any Questions? feel free to contact us