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

Carina Chun Pei; Woon Fong Leung

doi:10.1016/j.catcom.2013.03.029

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

Carina Chun Pei, Woon Fong Leung

Research output: Journal article publication › Journal article › Academic research › peer-review

59 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	100-104
Number of pages	5
Journal	Catalysis Communications
Volume	37
DOIs	https://doi.org/10.1016/j.catcom.2013.03.029
Publication status	Published - 5 Jul 2013

Keywords

Nanofiber
Photocatalyst
Reduced electron-hole recombination
Rutile-anatase ratio
TiO /ZnO 2

ASJC Scopus subject areas

Catalysis
General Chemistry
Process Chemistry and Technology

More information

10.1016/j.catcom.2013.03.029

Cite this

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title = "Enhanced photocatalytic activity of electrospun TiO2/ZnO nanofibers with optimal anatase/rutile ratio",

abstract = "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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AB - 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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