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Visible Light Photocatalytic Degradation of Reactive Deep Blue K-R by BiOI and BiOCl0.2Br0.1I0.7

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Abstract:

The visible-light photocatalytic degradation of an azo dye Reactive Deep Blue K-R by BiOI and BiOCl0.2Br0.1I0.7 photocatalysts was investigated. When the reaction proceeded for 1 h under the conditions of 15mg/l Reactive Deep Blue K-R solution and PH=3, the visible-light degradation degrees of Reactive Deep Blue K-R were 93% and 52% for BiOCl0.2Br0.1I0.7 and BiOI, respectively.Moreover, the photodegradation of Reactive Deep Blue K-R by BiOI and BiOCl0.2Br0.1I0.7 followed a first-order reaction kinetic and the values of k for BiOI and BiOCl0.2Br0.1I0.7 are 0.911h-1 and 1.981h-1, respectively. BiOCl0.2Br0.1I0.7 exhibits better visible-light-responsive photocatalytic performance for photodegradation of Reactive Deep Blue K-R than BiOI due to the smaller particle size, the larger specific surface area and the stronger redox potential of BiOCl0.2Br0.1I0.7.

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Periodical:

Applied Mechanics and Materials (Volumes 217-219)

Pages:

1186-1190

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.217-219.1186

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Online since:

November 2012

Authors:

Kai Jin Huang, Yu Yao Nie, Yun Liu

Keywords:

BiOCl0.2Br0.1I0.7, BiOI, Photocatalytic Degradation, Reactive Deep Blue K-R, Visible Light

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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