ICCAS OpenIR
Visible-light-driven photocatalytic degradation of microcystin-LR by Bi-doped TiO2
Yang, Jing1; Chen, Deng-Xia1; Deng, An-Ping1; Huang, Ying-Ping1; Chen, Chun-Cheng2
2011
Source PublicationRESEARCH ON CHEMICAL INTERMEDIATES
ISSN0922-6168
Volume37Issue:1Pages:47-60
AbstractBi-doped nano-crystalline TiO2 (Bi-TiO2) has been synthesized by sonocrystallization at low temperature. The Bi-TiO2 materials have narrower bandgaps than pristine TiO2, which endow them with significant visible light absorption. Accordingly, these materials had enhanced photocatalytic activity in the degradation of organic dye pollutants and the cyanotoxin microcystin-LR (MC-LR) under visible irradiation. It was found that degradation of MC-LR is rather efficient. After irradiation with visible light for 12 h the original MC-LR was removed completely, and 78% of the organic carbon was mineralized into CO2 after irradiation for 20 h. The hydroxyl radical (center dot OH) is the major active species responsible for the degradation reaction. Identified intermediates primarily originate from attack of center dot OH radicals on the double bonds between C4 and C5 (C6 and C7) of Adda and the ethylenic bond of Mdha in MC-LR. Some peptide bonds are also broken with longer irradiation time.
KeywordVisible Light Microcystin-lr Bi-doped Titanium Dioxide Photocatalysis
DOI10.1007/s11164-010-0224-4
Indexed BySCI
Language英语
WOS IDWOS:000286201900005
PublisherSPRINGER
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/71426
Collection中国科学院化学研究所
Corresponding AuthorHuang, Ying-Ping
Affiliation1.China Three Gorges Univ, Engn Res Ctr Ecoenvironm Gorges Reservoir Reg 3, Minist Educ, Hubei Yichang 443000, Peoples R China
2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Key Lab Photochem, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Yang, Jing,Chen, Deng-Xia,Deng, An-Ping,et al. Visible-light-driven photocatalytic degradation of microcystin-LR by Bi-doped TiO2[J]. RESEARCH ON CHEMICAL INTERMEDIATES,2011,37(1):47-60.
APA Yang, Jing,Chen, Deng-Xia,Deng, An-Ping,Huang, Ying-Ping,&Chen, Chun-Cheng.(2011).Visible-light-driven photocatalytic degradation of microcystin-LR by Bi-doped TiO2.RESEARCH ON CHEMICAL INTERMEDIATES,37(1),47-60.
MLA Yang, Jing,et al."Visible-light-driven photocatalytic degradation of microcystin-LR by Bi-doped TiO2".RESEARCH ON CHEMICAL INTERMEDIATES 37.1(2011):47-60.
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