摘要
The TiO2/UV photocatalytic degradation ofMichler's Ketone (MK) has been investigated in aqueous heterogeneous suspensions. Results obtained show rapid and complete oxidation of MK after 24-h, and more than 97.5% of MK was mineralized after a 32-h exposure to UV-365 nm irradiation. Establishment of the reaction pathway was made possible by a thorough analysis of the reaction mixture identifying the main intermediate products generated. Nine intermediates have been detected by HPLC/ESI-MS and GC/ MS techniques. The photocatalytic degradation of MK proceeds through competitive reactions such as N-de-methylation and destruction of the bis-aminobenzophenone structure. The former reaction took place in a stepwise manner to yield mono-, di-, tri-, tetra-demethylated species, while the latter reaction yielded N-methylaminobenzene and aminobenzene. The reaction mechanisms of TiO 2/UV proposed in this study should shed some light on future applications of the technology to the destruction of organic pollutants.
| 原文 | 英語 |
|---|---|
| 頁（從 - 到） | 729-740 |
| 頁數 | 12 |
| 期刊 | Journal of the Chinese Chemical Society |
| 卷 | 56 |
| 發行號 | 4 |
| 出版狀態 | 已發佈 - 2009 |
指紋
ASJC Scopus subject areas
- Chemistry(all)
引用此文
Photocatalytic degradation of michler's ketone in water by Uv light illumination using TiO2 photocatalyst : Identification of intermediates and the reaction pathway. / Lu, Chung Shin; Mai, Fu Der; Wu, Yi Chin; Yao, I. Chun; Hsu, Peng Yueh; Chen, Chiing Chang.
於: Journal of the Chinese Chemical Society, 卷 56, 編號 4, 2009, p. 729-740.研究成果: 雜誌貢獻 › 文章
}
TY - JOUR
T1 - Photocatalytic degradation of michler's ketone in water by Uv light illumination using TiO2 photocatalyst
T2 - Identification of intermediates and the reaction pathway
AU - Lu, Chung Shin
AU - Mai, Fu Der
AU - Wu, Yi Chin
AU - Yao, I. Chun
AU - Hsu, Peng Yueh
AU - Chen, Chiing Chang
PY - 2009
Y1 - 2009
N2 - The TiO2/UV photocatalytic degradation ofMichler's Ketone (MK) has been investigated in aqueous heterogeneous suspensions. Results obtained show rapid and complete oxidation of MK after 24-h, and more than 97.5% of MK was mineralized after a 32-h exposure to UV-365 nm irradiation. Establishment of the reaction pathway was made possible by a thorough analysis of the reaction mixture identifying the main intermediate products generated. Nine intermediates have been detected by HPLC/ESI-MS and GC/ MS techniques. The photocatalytic degradation of MK proceeds through competitive reactions such as N-de-methylation and destruction of the bis-aminobenzophenone structure. The former reaction took place in a stepwise manner to yield mono-, di-, tri-, tetra-demethylated species, while the latter reaction yielded N-methylaminobenzene and aminobenzene. The reaction mechanisms of TiO 2/UV proposed in this study should shed some light on future applications of the technology to the destruction of organic pollutants.
AB - The TiO2/UV photocatalytic degradation ofMichler's Ketone (MK) has been investigated in aqueous heterogeneous suspensions. Results obtained show rapid and complete oxidation of MK after 24-h, and more than 97.5% of MK was mineralized after a 32-h exposure to UV-365 nm irradiation. Establishment of the reaction pathway was made possible by a thorough analysis of the reaction mixture identifying the main intermediate products generated. Nine intermediates have been detected by HPLC/ESI-MS and GC/ MS techniques. The photocatalytic degradation of MK proceeds through competitive reactions such as N-de-methylation and destruction of the bis-aminobenzophenone structure. The former reaction took place in a stepwise manner to yield mono-, di-, tri-, tetra-demethylated species, while the latter reaction yielded N-methylaminobenzene and aminobenzene. The reaction mechanisms of TiO 2/UV proposed in this study should shed some light on future applications of the technology to the destruction of organic pollutants.
KW - Michler's Ketone
KW - Photocatalytic
KW - TiO
UR - http://www.scopus.com/inward/record.url?scp=77952519499&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77952519499&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:77952519499
VL - 56
SP - 729
EP - 740
JO - Journal of the Chinese Chemical Society
JF - Journal of the Chinese Chemical Society
SN - 0009-4536
IS - 4
ER -