Effect of N2/Ar plasma treatment on the visible light photocatalytic activity of CuO/TiO2

Zhengwei Luo, Hui Jiang, Longzhi Hu, Dan Li, Wenhua Geng, Ping Wei

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The effect of N2/Ar dielectric barrier discharge plasma on the photocatalytic activity of CuO/TiO2 under visible light irradiation was studied. The photocatalysts were characterized by X-ray diffraction, ultraviolet-visible spectrophotometry, transmission electron microscopy, X-ray photoelectron spectroscopy, and electron paramagnetic resonance spectroscopy. The plasma parameters including gas composition, treatment time, and plasma power were investigated. The activities of the plasma-treated photocatalysts were evaluated by the photodegradation of methyl orange under visible light illumination. The optimal operation conditions were N2:Ar = 8:2, treatment time of 20 min, and a discharge current of 1.0 A. Simulated mercury-containing wastewater was treated by the photocatalysts.

Original languageEnglish
Pages (from-to)1752-1760
Number of pages9
JournalChinese Journal of Catalysis
Volume35
Issue number10
DOIs
StatePublished - 20 Oct 2014

Keywords

  • Mercury
  • Modification
  • Nitrogen doping
  • Plasma
  • Titanium dioxide

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