您好，欢迎访问中国热带农业科学院 机构知识库！
中国热带农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Study on the Photocatalytic Reaction of Trichloroethylene (TCE) over TiO2 Using Synchrotron Radiation Photoionization Mass Spectrometry

文献类型： 外文期刊

作者： Sebaro, Atinafu Abayneh 1 ; Qian, Bing 1 ; Yang, Jiuzhong 1 ; Xu, Minggao 1 ; Liu, Chengyuan 1 ; Pan, Yang 1 ;

作者机构： 1.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China

2.Ctr Chinese Acad Trop Agr Sci, Anal & Test, Haikou 571101, Hainan, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Qual & Safety Control Subtrop Fruit & Vege, Haikou 571101, Hainan, Peoples R China

4.Hainan Prov Key Lab Qual & Safety Trop Fruits & Ve, Haikou 571101, Hainan, Peoples R China

关键词： Trichloroethylene; Synchrotron radiation; Photocatalysis; Photoionizationmass spectrometry

期刊名称：JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY （ 影响因子：2.7； 五年影响因子：2.8 ）

ISSN： 1044-0305

年卷期： 2025 年 36 卷 6 期

页码：

收录情况： SCI

摘要： Trichloroethylene (TCE) is a widely used solvent in industrial processes, which is harmful to human health and the environment. Photocatalysis is a promising method for the degradation of TCE. In this work, the photocatalytic reaction of TCE over TiO2 was studied using synchrotron radiation photoionization mass spectrometry (SR-PIMS) under 360 nm UV light irradiation. First, more than 12 kinds of gas phase degradation intermediates and products were detected, including newly identified products such as formaldehyde (HCHO), formic acid (HCOOH) and hypochlorous acid (HOCl) and tetrachloroethane (C2H2Cl4). Second, the effects of water and oxygen on the photocatalysis of TCE over TiO2 were investigated. It was found that water vapor showed a negligible effect on the photocatalytic degradation efficiency TCE, but could enhance the generation of oxygen-containing species, like hypochlorous acid (HOCl), Phosgene (COCl2), and dichloroacetyl chloride (C2HOCl3). The presence of oxygen in the gas phase significantly enhanced the photocatalytic degradation of TCE, due to its role as an electron acceptor, preventing the recombination of photogenerated electron-hole pairs on the TiO2 surface, thereby enhancing the generation of reactive species like superoxide radicals (O2 center dot-), which are essential for the effective degradation of TCE. Finally, the photocatalytic degradation network of TCE over TiO2 was proposed.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国热带农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台