[1]李庆奎,周秉彦,唐建军,等.H2O2助TiO2可见光催化降解水中的扑草净[J].郑州大学学报(工学版),2014,35(01):55-59.[doi:10.3969/j.issn.1671-6833.2014.01.013]
 Li QingkuiZhou BingyanTang JianjunChen Yiqing.The degradation of prometryn by TiO2 visible photocatalysis with H2O2 assistance[J].Journal of Zhengzhou University (Engineering Science),2014,35(01):55-59.[doi:10.3969/j.issn.1671-6833.2014.01.013]
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H2O2助TiO2可见光催化降解水中的扑草净()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
35卷
期数:
2014年01期
页码:
55-59
栏目:
出版日期:
2014-02-28

文章信息/Info

Title:
The degradation of prometryn by TiO2 visible photocatalysis with H2O2 assistance
作者:
李庆奎周秉彦唐建军陈益清
1.郑州大学材料科学与工程学院,河南郑州,4500012.深圳职业技术学院建筑与环境工程学院,广东深圳,518055
Author(s):
Li Qingkui1Zhou Bingyan1Tang Jianjun2Chen Yiqing2
1. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan, 450001 2. School of Architecture and Environmental Engineering, Shenzhen Vocational and Technical College, Shenzhen, Guangdong, 518055
关键词:
Keywords:
Visible light catalytic titanium dioxide hydrogen peroxide prometryn hydroxyl radicals
DOI:
10.3969/j.issn.1671-6833.2014.01.013
文献标志码:
A
摘要:
以TiO2-P25为光催化剂,内分泌干扰物扑草净作模型污染物,研究了H2O2助TiO2可见光催化降解扑草净的反应特性.表明H2O2能助TiO2可见光催化降解扑草净,反应120 min时,扑草净的降解率达80%;反应过程中,控制溶液体系的pH值为3.0左右、H2O2与扑草净的初始浓度比约45∶1较为适宜;在扑草净的降解过程中,甲基、硫基及氨基被氧化脱除,NO3-、SO42--被持续释放出来,TOC去除率达70%,降解终产物为三聚氰酸;通过对反应体系的光谱分析显示,H2O2吸附于TiO2表面形成复合物结构,在可见光作用下转为自由基等活性物种,扑草净的降解涉及羟基自由基(·OH)的产生与参与.
Abstract:
With TiO2 - P25 as photocatalyst, endocrine disruptors prometryn as model of pollutants, H2O2 was studied to help TiO2 visible light catalytic degradation reaction characteristics of prometryn. Suggest that H2O2 can help TiO2 visible light catalytic degradation of prometryn, reaction 120 min, prometryn degradation rate was 80%; Reaction process, the control system solution pH value of 3.0 or so, the initial concentration ratio of H2O2 with prometryn about 45:1 relatively appropriate; In the process of the degradation of prometryn, methyl, sulfonium and amine oxide removal, NO3 -, SO42 - was released continuously, the TOC removal rate was 70%, and the degradation of end product for cyanuric acid; Through the spectrum analysis of the reaction system, according to structure, forming complexes adsorbed on the surface of TiO2 H2O2 under visible light is converted to free radical active species, such as the degradation of prometryn involves the generation of hydroxyl radical (· OH) and participation.

相似文献/References:

[1]卢红霞,张锐,郑英姿,等.不同TiO2晶型对 PTCR启动元件恢复特性的影响[J].郑州大学学报(工学版),1999,20(03):45.[doi:10.3969/j.issn.1671-6833.1999.03.015]
 Lu Hongxia,ZHANG Rui,Zheng Yingzi,et al.Effect of different TiO2 crystal forms on recovery characteristics of PTCR start-up elements[J].Journal of Zhengzhou University (Engineering Science),1999,20(01):45.[doi:10.3969/j.issn.1671-6833.1999.03.015]

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