ICCAS OpenIR
Mechanism on Photocatalytic Degradation of Benzoic Acid with TiO2-film Electrode
Yang Juan1; Dai Jun1; Miao Juan1; Li Jiantong1; Zhao Jincai2
2009-09-14
Source PublicationACTA CHIMICA SINICA
ISSN0567-7351
Volume67Issue:17Pages:1973-1980
AbstractThe supported nano-TiO2 electrode was prepared in laboratory, and the photoelectrocatalytic degradation of benzoic acid under UV irradiation was investigated detailedly. The micro-structure and photoelectrocatalytic property of TiO2-film were characterized by scanning electron microscopy, X-ray diffractometry and photo-current response. A value of pH 10.5 was chosen to detect more intermediates generated during the photoelectrocatalytic degradation of benzoic acid by GUMS. The degradation kinetics, removal yield of total organic carbon, degraded inter-mediates and the formation of active radical species in different experimental conditions were examined by HPLC, TOC, GUMS and spin-trap ESR spectrometry. According to above experimental results, the mechanism of benzoic acid photocatalytic degradation was deduced initially. Due to the combined effect of hydroxyl and active oxygen radicals, the hydroxylated benzoic acid, via cis,cis-muconic acid, was decomposed into low molecular weight acid and CO2.
KeywordTio2 Electrode Photoelectrocatalysis Benzoic Acid Mineralization Mechanism
Indexed BySCI
Language英语
WOS IDWOS:000270209800006
PublisherSCIENCE PRESS
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65884
Collection中国科学院化学研究所
Corresponding AuthorYang Juan
Affiliation1.Henan Polytech Univ, Dept Phys Chem, Jiaozuo 454003, Peoples R China
2.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Key Lab Photochem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Yang Juan,Dai Jun,Miao Juan,et al. Mechanism on Photocatalytic Degradation of Benzoic Acid with TiO2-film Electrode[J]. ACTA CHIMICA SINICA,2009,67(17):1973-1980.
APA Yang Juan,Dai Jun,Miao Juan,Li Jiantong,&Zhao Jincai.(2009).Mechanism on Photocatalytic Degradation of Benzoic Acid with TiO2-film Electrode.ACTA CHIMICA SINICA,67(17),1973-1980.
MLA Yang Juan,et al."Mechanism on Photocatalytic Degradation of Benzoic Acid with TiO2-film Electrode".ACTA CHIMICA SINICA 67.17(2009):1973-1980.
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