ICCAS OpenIR
Formation and identification of intermediates visible-light-assisted photodegradation sulforhodamine-B dye in aqueous TiO2 dispersion
Chen, CC; Zhao, W; Li, JY; Zhao, JC
2002-08-15
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume36Issue:16Pages:3604-3611
AbstractThe photodegradation of dye pollutants under visible light irradiation in TiO2 dispersions continues to draw considerable attention because of the greater effective utilization of solar energy and its potential application in treating wastewaters from textile and photographic industries. To get a better handle on the mechanistics details of this TiO2-assisted photodegradation of dyes with visible radiation, the process was examined by UV-visible spectroscopy, high-performance liquid chromatography, silica gel thin-layer chromatography, and matrix-assisted laser desorption ionization time-of-flight mass spectrometric techniques to separate and identify the N-de-ethylated intermediate products during the photodegradation of N,N,N,N-tetraethylsulforhodamine-B (SRB) in the absence and presence of iodide ions. Five intermediates, namely, N,N-diethyl-N'-ethyl-sulforhodamine, N,N-diethylsulforhodamine, N-ethyl-N'-ethylsulforhodamine, N-ethylsulforhodamine, and sulforhodamine were thus identified. They correspond to intermediate products having a different number of N-ethyl groups, which are removed sequentially from the SRB molecule. The reaction process was accompanied by the oxidation of I- to I-3(-) in the presence of I- ions. Formation of radicals was assessed by spin-trap electron spin resonance spectrometry. The experimental results provided the basis for a more detailed description of the reaction mechanism(s).
Indexed BySCI
Language英语
WOS IDWOS:000177448600021
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:153[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/79554
Collection中国科学院化学研究所
Corresponding AuthorZhao, JC
Affiliation1.Acad Sinica, Inst Chem, Ctr Mol Sci, Lab Photochem, Beijing 100080, Peoples R China
2.Meisei Univ, Frontier Res Ctr Global Environm Protect, Hino, Tokyo 191, Japan
3.Concordia Univ, Dept Chem & Biochem, Montreal, PQ H3G 1M8, Canada
Recommended Citation
GB/T 7714
Chen, CC,Zhao, W,Li, JY,et al. Formation and identification of intermediates visible-light-assisted photodegradation sulforhodamine-B dye in aqueous TiO2 dispersion[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2002,36(16):3604-3611.
APA Chen, CC,Zhao, W,Li, JY,&Zhao, JC.(2002).Formation and identification of intermediates visible-light-assisted photodegradation sulforhodamine-B dye in aqueous TiO2 dispersion.ENVIRONMENTAL SCIENCE & TECHNOLOGY,36(16),3604-3611.
MLA Chen, CC,et al."Formation and identification of intermediates visible-light-assisted photodegradation sulforhodamine-B dye in aqueous TiO2 dispersion".ENVIRONMENTAL SCIENCE & TECHNOLOGY 36.16(2002):3604-3611.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen, CC]'s Articles
[Zhao, W]'s Articles
[Li, JY]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, CC]'s Articles
[Zhao, W]'s Articles
[Li, JY]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, CC]'s Articles
[Zhao, W]'s Articles
[Li, JY]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.