Dynamic monitoring and regulation of pentachlorophenol photodegradation process by chemiluminescence and TiO2/PDA
文献类型：期刊论文
| 作者 | Chen, Fengjie; Zhao, Lixia; Yu, Wanchao; Wang, Yarui; Zhang, Hui; Guo, Liang-Hong |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2020-11-15 |
| 卷号 | 399页码:1-12 |
| 关键词 | PDA modified TiO2 PCP photodegradation process Toxic intermediates TCBQ and OH-TrCBQ Chemiluminescence |
| ISSN号 | 0304-3894 |
| 英文摘要 | Pentachlorophenol (PCP), a highly toxic halogenated aromatic compound, and its direct photolysis or TiO2 photocatalysis may generate toxic intermediates and induce secondary pollution in the environment. It is urgently needed to design a strategy to inhibit the toxic intermediates in the photodegradation of PCP. To achieve this, polydopamine (PDA), a non-toxic substance, modified TiO2 (P25/PDA) nanoparticles were synthesized and used to improve the PCP photodegradation process. The dynamic tracking of toxic intermediates tetrachloro-1,4-benzoquinone (TCBQ) and trichlorohydroxy-1,4-benzoquinone (OH-TrCBQ) produced in the PCP photo degradation process were obtained by continuous flow chemiluminescence. Combined with reactive oxygen species (ROS) measurements, P25/PDA could approximatively depress 70 % TCBQ and 40 % OH-TrCBQ generation through the regulation of ROS especially the generation of a fairly large amount of H2O2 (about 30 mu M) and O-2(center dot-) (about 20 mu M) on the surface of the P25/PDA. The toxicity evaluation showed that the photo degradation of PCP by P25/PDA was a safer and green approach. Therefore, it was instructive to inhibit the formation of highly toxic intermediates in the photodegradation of environmental contaminants by regulating the ROS generated on the surface of the photocatalysts. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44661]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Chen, Fengjie,Zhao, Lixia,Yu, Wanchao,et al. Dynamic monitoring and regulation of pentachlorophenol photodegradation process by chemiluminescence and TiO2/PDA[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,399:1-12. |
| APA | Chen, Fengjie,Zhao, Lixia,Yu, Wanchao,Wang, Yarui,Zhang, Hui,&Guo, Liang-Hong.(2020).Dynamic monitoring and regulation of pentachlorophenol photodegradation process by chemiluminescence and TiO2/PDA.JOURNAL OF HAZARDOUS MATERIALS,399,1-12. |
| MLA | Chen, Fengjie,et al."Dynamic monitoring and regulation of pentachlorophenol photodegradation process by chemiluminescence and TiO2/PDA".JOURNAL OF HAZARDOUS MATERIALS 399(2020):1-12. |
入库方式： OAI收割
来源：生态环境研究中心
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