Roles of reactive oxygen species (ROS) in the photocatalytic degradation of Check pentachlorophenol and its main toxic intermediates by TiO2/UV

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Roles of reactive oxygen species (ROS) in the photocatalytic degradation of Check pentachlorophenol and its main toxic intermediates by TiO2/UV
	Ma, Hai-Yan ; Zhao, Lixia ; Guo, Liang-Hong ; Zhang, Hui ; Chen, Feng-Jie ; Yu, Wan-Chao
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2019-05-05
卷号	369 页码:719-726
关键词	Reactive oxygen species Photocatalytic degradation Pentachlorophenol Intermediate products Titanium dioxide
ISSN号	0304-3894
英文摘要	Pentachlorophenol (PCP) caused water quality problems owe to its past widespread application and stability, harmful to human health. Photocatalysis, which was mainly involved in the reactive oxygen species (ROS) reaction, has large potential as water treatment process. However, the roles of ROS on the degradation process of PCP are not yet clearly defined. The main objectives of this work were to investigate the roles of ROS involved in the whole degradation of PCP and main toxic intermediates and elucidate the degradation mechanisms. Tetrachloro-1,4-benzo/hydroquinone (TCBQ/TCHQ), trichlorohydroxy-1,4-benzoquinone (OH-TrCBQ) and 2,5-dichloro-3,6-dihydroxy-1,4-benzoquinone (OH-DCBQ) were identified as main intermediates. The roles of generated ROS including (OH)-O-center dot, O-2(center dot-) and H2O2 were systematically explored for the degradation of PCP and its main intermediates using radical quenchers. The results showed that, *OH played the dominant role for the degradation of PCP, O-2(center dot-) played more contributing roles for the degradation of TCBQ, H2O2 exhibited major contribution for the degradation of OH-TrCBQ and OH-DCBQ. These results offered us an insight into the degradation mechanism of PCP involved with ROS. It can also serve as the basis for controlling and blocking the generation of highly toxic substances through regulating the ROS generation during the PCP degradation.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43006]
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
作者单位	1.Chinese Acad Sci, State Key Lab Environm Chem & Ecotoxicol, Res Ctr Ecoenvironm Sci, 18 Shuangqing Rd,POB 2871, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Ma, Hai-Yan,Zhao, Lixia,Guo, Liang-Hong,et al. Roles of reactive oxygen species (ROS) in the photocatalytic degradation of Check pentachlorophenol and its main toxic intermediates by TiO2/UV[J]. JOURNAL OF HAZARDOUS MATERIALS,2019,369:719-726.
APA	Ma, Hai-Yan,Zhao, Lixia,Guo, Liang-Hong,Zhang, Hui,Chen, Feng-Jie,&Yu, Wan-Chao.(2019).Roles of reactive oxygen species (ROS) in the photocatalytic degradation of Check pentachlorophenol and its main toxic intermediates by TiO2/UV.JOURNAL OF HAZARDOUS MATERIALS,369,719-726.
MLA	Ma, Hai-Yan,et al."Roles of reactive oxygen species (ROS) in the photocatalytic degradation of Check pentachlorophenol and its main toxic intermediates by TiO2/UV".JOURNAL OF HAZARDOUS MATERIALS 369(2019):719-726.