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 language | English |
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Pages (from-to) | 1752-1760 |
Number of pages | 9 |
Journal | Chinese Journal of Catalysis |
Volume | 35 |
Issue number | 10 |
DOIs | |
State | Published - 20 Oct 2014 |
Keywords
- Mercury
- Modification
- Nitrogen doping
- Plasma
- Titanium dioxide