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Citation: LU Yuangang, YANG Yingchun, LIU Shengyu, YE Zhixiang. Photocatalytic Degradation of 2, 4-Dichlorophenol under Visible-light Irradiation Using Nitrogen-doped Bi₂O₃ Photocatalyst[J]. Chinese Journal of Applied Chemistry, ;2012, 29(9): 1023-1029. doi: 10.3724/SP.J.1095.2012.00479 shu

Photocatalytic Degradation of 2, 4-Dichlorophenol under Visible-light Irradiation Using Nitrogen-doped Bi₂O₃ Photocatalyst

1.
Air Environmental Modeling and Pollution Controlling Key Laboratory of Sichuan Higher Education Institutes, Department of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225

Corresponding author: YANG Yingchun,
Received Date: 27 October 2011
Available Online: 6 December 2011
Fund Project: 四川省教育厅重点基金项目(07ZA012) (07ZA012)

The photocatalytic degradation of 2,4-dichlorophenol was carried out using un-doped and nitrogen-doped bismuth oxide as catalysts under visible-light irradiation.The results indicated that the nitrogen-doped bismuth oxide exhibited a higher photocatalytic activity than that of the un-doped bismuth oxide.When 2.0 g/L of nitrogen-doped bismuth oxide was added to 20 mg/L of 2,4-dichlorophenol aqueous solution with initial pH=7,the degradation rate could reach 91.5%.Moreover,the relationship between 2,4-dichlorophenol degradation rate and its initial concentration follows the Langmuir-Hinshelwood model.The variations of total organic carbon and Cl^- were also inspected during the photocatalytic reaction.It is suggested that it is beneficial for the mineralization and dechlorination for 2,4-dichlorophenol by using nitrogen-doped bismuth oxide as photocatalyst.
- nitrogen-doped bismuth oxide,
- photocatalysis,
- visible-light,
- dichlorophenol,
- kinetics
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Photocatalytic Degradation of 2, 4-Dichlorophenol under Visible-light Irradiation Using Nitrogen-doped Bi2O3 Photocatalyst

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通讯作者: 陈斌, bchen63@163.com

Photocatalytic Degradation of 2, 4-Dichlorophenol under Visible-light Irradiation Using Nitrogen-doped Bi₂O₃ Photocatalyst