Degradation of Prometryn by TiO2 Visible Photocatalysis with H202 Assistance
[1]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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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
35
Number of periods:
2014 01
Page number:
55-59
Column:
Public date:
2014-02-28
- Title:
- Degradation of Prometryn by TiO2 Visible Photocatalysis with H202 Assistance
- Keywords:
- Visible light catalytic; titanium dioxide; hydrogen peroxide; prometryn ; hydroxyl radicals
- CLC:
- -
- DOI:
- 10.3969/j.issn.1671-6833.2014.01.013
- 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.
- References:
- -
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