Photocatalytic reactions of pyrene at TiO2/water interfaces
Wen, S; Zhao, JC; Sheng, GY; Fu, JM; Peng, PA
Source PublicationCHEMOSPHERE
AbstractThe photocatalytic oxidation of pyrene preadsorbed on TiO2 is examined in aqueous suspension under UV irradiation. Chemical oxygen demand measurements, UV-VIS spectrophotometer, infrared spectrometer and GC-MS analytical techniques were used to monitor the formed intermediates. During the oxidation processes, the ring-open reaction, hydroxylation and ketolysis occurred to produce some intermediate products (4-oxapyrene-5-one, 1,6- or 1,8-pyrenediones, 4,5-phenanthrenedialdehyde, cyclopenta[def]phenanthrene). Some factors affecting the photodegradation rate were also studied. The results were different from other studies: The pH of the dispersion, ratio of Py/TiO2:water had little effect on the photooxidation rate of pyrene catalyzed by TiO2, while the surface coverage, addition of Fe3+ affected it greatly. (C) 2002 Elsevier Science Ltd. All rights reserved.
KeywordPyrene Tio2 Photodegradation Aqueous Solution
Indexed BySCI
WOS IDWOS:000180077300015
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Cited Times:53[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorZhao, JC
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Lab Photochem, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China
Recommended Citation
GB/T 7714
Wen, S,Zhao, JC,Sheng, GY,et al. Photocatalytic reactions of pyrene at TiO2/water interfaces[J]. CHEMOSPHERE,2003,50(1):111-119.
APA Wen, S,Zhao, JC,Sheng, GY,Fu, JM,&Peng, PA.(2003).Photocatalytic reactions of pyrene at TiO2/water interfaces.CHEMOSPHERE,50(1),111-119.
MLA Wen, S,et al."Photocatalytic reactions of pyrene at TiO2/water interfaces".CHEMOSPHERE 50.1(2003):111-119.
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