ICCAS OpenIR
Photooxidation pathway of sulforhodamine-B. Dependence on the adsorption mode on TiO2 exposed to visible light radiation
Liu, GM; Li, XZ; Zhao, JC; Hidaka, H; Serpone, N
2000-09-15
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume34Issue:18Pages:3982-3990
AbstractThe temporal course of the photooxidation of sulforhodamine-B (SRB) in aqueous media illuminated by visible wavelengths in the presence of TiO2 has been examined to determine the nature of the intermediate species produced and to explore the operative reaction pathway(s). Two pathways are described to account for the differences in the final photooxidation products whose nature depends on the different modes of adsorption of the dye on the metaloxide mediator. In the SRB/TiO2 system, when SRB is adsorbed on the positively charged TiO2 particle surface through a sulfonate group cleavage of the SRB chromophore structure predominates and N-de-ethylation occurs only to a slight extent with the major photooxidation products being diethylamine and carbon dioxide. in the presence of the anionic dodecylbenzenesulfonate surfactant DBS, when SRB is near the negatively charged DBS/TiO2 interface through the positive diethylamine group N-de-ethylation occurs preferentially before destruction of the structure with the major products being acetaldehyde and carbon dioxide.
DOI10.1021/es001064c
Indexed BySCI
Language英语
WOS IDWOS:000089315600024
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:236[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/75654
Collection中国科学院化学研究所
Corresponding AuthorZhao, JC
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Lab Photochem, Beijing 100080, Peoples R China
2.Meisei Univ, Frontier Res Ctr Earth Environm Protect, Hino, Tokyo 191, Japan
Recommended Citation
GB/T 7714
Liu, GM,Li, XZ,Zhao, JC,et al. Photooxidation pathway of sulforhodamine-B. Dependence on the adsorption mode on TiO2 exposed to visible light radiation[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2000,34(18):3982-3990.
APA Liu, GM,Li, XZ,Zhao, JC,Hidaka, H,&Serpone, N.(2000).Photooxidation pathway of sulforhodamine-B. Dependence on the adsorption mode on TiO2 exposed to visible light radiation.ENVIRONMENTAL SCIENCE & TECHNOLOGY,34(18),3982-3990.
MLA Liu, GM,et al."Photooxidation pathway of sulforhodamine-B. Dependence on the adsorption mode on TiO2 exposed to visible light radiation".ENVIRONMENTAL SCIENCE & TECHNOLOGY 34.18(2000):3982-3990.
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