Mechanistic Studies of TiO2 Photocatalysis and Fenton Degradation of Hydrophobic Aromatic Pollutants in Water

	Mechanistic Studies of TiO2 Photocatalysis and Fenton Degradation of Hydrophobic Aromatic Pollutants in Water
	Gong, Yuanzheng 1,2; Yang, Chun 1,2; Ji, Hongwei 1,2; Chen, Chuncheng 1,2; Ma, Wanhong 1,2; Zhao, Jincai 1,2
刊名	CHEMISTRY-AN ASIAN JOURNAL
	2016-12-19
卷号	11 期号:24 页码:3568-3574
关键词	NIH shift photochemistry hydroxylation of aromatics reaction mechanisms water chemistry
英文摘要	HO-adduct radicals have been investigated and confirmed as the common initial intermediates in TiO2 photocatalysis and Fenton degradations of water-insoluble aromatics. However, the evolution of HO-adduct radicals to phenols has not been completely clarified. When 4-d-toluene and p-xylene were degraded by TiO2 photocatalysis and Fenton reactions, respectively, a portion of the 4-deuterium or 4-CH3 group (18-100%) at the attacked ipso position shifted to the adjacent position of the ring in the formed phenols (NIH shift; NIH is short for the National Institutes of Health, to honor the place where this phenomenon was first discovered). The results, combined with the observation of a key dienyl cationic intermediate by in situ attenuated total reflectance FTIR spectroscopy, indicate that, for the evolution of HO-adduct radicals, a mixed mechanism of both the carbocation intermediate pathway and O-2-capturing pathway occurs in both aqueous TiO2 photocatalysis and aqueous Fenton reactions.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/36536]
专题	化学研究所_光化学实验室
作者单位	1.Chinese Acad Sci, Key Lab Photochem, Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Gong, Yuanzheng,Yang, Chun,Ji, Hongwei,et al. Mechanistic Studies of TiO2 Photocatalysis and Fenton Degradation of Hydrophobic Aromatic Pollutants in Water[J]. CHEMISTRY-AN ASIAN JOURNAL,2016,11(24):3568-3574.
APA	Gong, Yuanzheng,Yang, Chun,Ji, Hongwei,Chen, Chuncheng,Ma, Wanhong,&Zhao, Jincai.(2016).Mechanistic Studies of TiO2 Photocatalysis and Fenton Degradation of Hydrophobic Aromatic Pollutants in Water.CHEMISTRY-AN ASIAN JOURNAL,11(24),3568-3574.
MLA	Gong, Yuanzheng,et al."Mechanistic Studies of TiO2 Photocatalysis and Fenton Degradation of Hydrophobic Aromatic Pollutants in Water".CHEMISTRY-AN ASIAN JOURNAL 11.24(2016):3568-3574.