Degradation of Reactive Brilliant Red KE-3B in aqueous solution by mesoporous ZnO

The photocatalytic degradation of Reactive Brilliant Red KE-3B using mesoporous ZnO as photocatalyst in aqueous solution had been investigated under UV irradiation. The average particle size and specific surface area of the mesoporous ZnO were 40.3nm and 20.7 m2/g, respectively. The effects of catal...

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Bibliographic Details
Published in:Desalination and water treatment 2012-11, Vol.49 (1-3), p.57-64
Main Authors: Lv, Hua, Liu, Yumin, Li, Shuangqing, Xi, Guoxi, Xing, Xinyan
Format: Article
Language:English
Subjects:
Anions
Applied sciences
Aqueous solutions
Carbon
Decoloring
Degradation
Exact sciences and technology
Photocatalysis
Photocatalytic degradation
Pollution
Reactive Brilliant Red KE-3B
Specific surface
Water treatment and pollution
Zinc oxide
ZnO
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Summary:The photocatalytic degradation of Reactive Brilliant Red KE-3B using mesoporous ZnO as photocatalyst in aqueous solution had been investigated under UV irradiation. The average particle size and specific surface area of the mesoporous ZnO were 40.3nm and 20.7 m2/g, respectively. The effects of catalyst loading, solution pH, initial dye concentration and anions (SO42-, NO3-, Cl- and CO32-) on the photocatalytic degradation of the model compound were investigated. Under the optimum conditions, approximately 98.9% decolorization efficiency within 45 min and 83.7% total organic carbon removal efficiency within 3 h were achieved, which were higher than that by the commercial ZnO. In addition, the degradation intermediates were analyzed by a gas chromatography coupled with mass spectrometry system and the probable pathways for the formation of the intermediates were proposed.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2012.708198