Abstract

We present a novel UV–visible-light photocatalytic optical hollow-fiber in which a hollow optical fiber (HOF) and TiO2-based composite are coupled for enhancement of photocatalytic activity toward degradation of 4-chlorophenol (4-CP). A HOF was coated with a TiO2-based composite composed of Er3+:YAlO3/SiO2/TiO2 (EYST) and acting as the photocatalytic element. The EYST coating showed good light-inducing capacity at the fiber-coating interface and high photocatalytic activity driven by UV–visible light. The photocatalytic activity of the fabricated photocatalytic HOFs was investigated for degradation of 4-CP in aqueous solution in the wavelength spectrum of 360–780 nm. Examined were the effects of the EYST coating gradient and reactor operating conditions (pH and temperature) on the degradation of 4-CP. The EYST-coated HOF significantly enhanced the 4-CP degradation, dechlorination, and mineralization, compared to pure TiO2-coated HOF and EYST-coated solid optical fibers. Specifically, high photocatalytic activity was obtained when the EYST coating thicknesses at the HOF's incident end and HOF's hemispherical end were 10 and 160 μm, the pH was 6.0, and temperature was 55 °C.

LanguageEnglish (US)
Pages731-739
Number of pages9
JournalChemical Engineering Journal
Volume355
DOIs
StatePublished - Jan 1 2019

Fingerprint

chlorophenol
Optical fibers
Degradation
degradation
coating
Coatings
Dechlorination
Composite materials
dechlorination
4-chlorophenol
TiO2-SiO2
fibre
aqueous solution
temperature
Wavelength
Temperature
mineralization
Fibers
wavelength

Keywords

  • 4-Chlorophenol
  • Hollow optical fiber
  • Photocatalytic activity
  • TiO
  • Visible light photocatalysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

A novel photocatalytic optical hollow-fiber with high photocatalytic activity for enhancement of 4-chlorophenol degradation. / Zhong, Nianbing; Chen, Ming; Luo, Yihao; Wang, Zhengkun; Xin, Xin; Rittmann, Bruce.

In: Chemical Engineering Journal, Vol. 355, 01.01.2019, p. 731-739.

Research output: Contribution to journalArticle

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abstract = "We present a novel UV–visible-light photocatalytic optical hollow-fiber in which a hollow optical fiber (HOF) and TiO2-based composite are coupled for enhancement of photocatalytic activity toward degradation of 4-chlorophenol (4-CP). A HOF was coated with a TiO2-based composite composed of Er3+:YAlO3/SiO2/TiO2 (EYST) and acting as the photocatalytic element. The EYST coating showed good light-inducing capacity at the fiber-coating interface and high photocatalytic activity driven by UV–visible light. The photocatalytic activity of the fabricated photocatalytic HOFs was investigated for degradation of 4-CP in aqueous solution in the wavelength spectrum of 360–780 nm. Examined were the effects of the EYST coating gradient and reactor operating conditions (pH and temperature) on the degradation of 4-CP. The EYST-coated HOF significantly enhanced the 4-CP degradation, dechlorination, and mineralization, compared to pure TiO2-coated HOF and EYST-coated solid optical fibers. Specifically, high photocatalytic activity was obtained when the EYST coating thicknesses at the HOF's incident end and HOF's hemispherical end were 10 and 160 μm, the pH was 6.0, and temperature was 55 °C.",
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AU - Xin, Xin

AU - Rittmann, Bruce

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