[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 Qingkui,ZHOU Bingyan,TANG Jianjun,et al.Degradation of Prometryn by TiO2 Visible Photocatalysis with H202 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
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:
Degradation of Prometryn by TiO2 Visible Photocatalysis with H202 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 Qingkui; ZHOU Bingyan; TANG Jianjun; CHEN Yiqing
1.School of Materials Seience and Engineering, 2hengzhou University, 2hengzhou 450001, China; 2. School of Construetionand Environmental Engineering, Shenzhen Polytechnie, Shenzhen 518055, China
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:
The degradation of prometryn by Ti02-P25 visible-light pholoeatalysis with H202 assiatanee wasstudied. The results indieated that prometryn could be degraded by Ti0, visible-light photoeatalysis with H202 assiatanee, and the degradation ratio could be 8096 after 120 min reaction. It was appropriate to control pHand the ratio of [ H202 ]/[ prometryn] to be 3.0 and 45, respectively. In the degradation process of prome.tryn, methyl, thio and amino groups were oxidized as NO3- and SO4, the removal ratio of TOC reached7096 , and the end produel of promelryn degradation was cyanurie acid. $pectrum analysis indieated that thecomposite structures by H202 adsorbing on the Ti02 surface was converted to free radieals under visible light.and the reaction proeess was predominated by the hydroxyl free radieal( . 0H) generation in the system.

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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