磷酸银光催化降解嗪草酮的动力学研究

赵晓丹; 郭南杰; 周添夏; 蒋向兵; 杨瀛豪

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DOI:10.3969/j.issn.1006-4729.2016.06.014

Journal of ShangHai University of Electric Power :2016,32(6):570-573,577

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磷酸银光催化降解嗪草酮的动力学研究

赵晓丹, 郭南杰, 周添夏, 蒋向兵, 杨瀛豪

(上海电力学院环境与化学工程学院)

Kinetics of Photocatalytic Degradation of Metribuzin by Silver Phosphate

ZHAO Xiaodan, GUO Nanjie, ZHOU Tianxia, JIANG Xiangbing, YANG Yinghao

(School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

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Received:September 30, 2015

中文摘要: 采用沉淀法和光照还原沉淀法分别制备了Ag₃PO₄和Ag/AgCl/Ag₃PO₄两种可见光光催化剂，在可见光照射条件下，分别考察了其对水溶液中嗪草酮的降解动力学过程，并比较了二者的光催化活性差异以及稳定性.研究表明：嗪草酮的光催化降解过程均符合表观一级反应动力学，Ag/AgCl/Ag₃PO₄的催化活性和稳定性明显优于Ag₃PO₄，剂量为200 mg/L时，20 min内对嗪草酮的降解率达99%以上，循环使用4次后，降解率仍维持在88%以上.

中文关键词: 可见光光催化磷酸银磷酸银系复合材料嗪草酮

Abstract:Ag₃PO₄ and Ag/AgCl/Ag₃PO₄ nano-particles are synthesized with settling method and photoreduction method of precipitation respectively.The degradation kinetics of metribuzin in the water solution is investigated under the visible light irradiation,and the difference of the photocatalytic activity and the stability of the two samples are compared.The photocatalytic degradation of the process of the photo catalytic degradation of the metribuzin is in accordance with the apparent first-order kinetics.The photocatalytic activity and the stability of Ag/AgCl/Ag₃PO₄ are distinctly better than Ag₃PO₄.The degradation rate in 20 min is more than 99% when the dose of Ag/AgCl/Ag₃PO₄ is 200 mg/L and the degradation rate is maintained still at 88% after the use of 4 cycles.

keywords: visible light photocatalysis silver phosphate silver phosphate composites metribuzin

文章编号：201600614 中图分类号： 文献标志码：

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Author Name	Affiliation	E-mail
ZHAO Xiaodan	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China	zhaoxiaodan@sheip.edu.cn
GUO Nanjie	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
ZHOU Tianxia	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
JIANG Xiangbing	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
YANG Yinghao	School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China