Visible light-induced catalytic degradation of iprobenfos fungicide by poly(3-octylthiophene-2,5-diyl) film

C. Wen; K. Hasegawa; T. Kanbara; S. Kagaya; T. Yamamoto

doi:10.1016/S1010-6030(00)00206-9

Visible light-induced catalytic degradation of iprobenfos fungicide by poly(3-octylthiophene-2,5-diyl) film

C. Wen, K. Hasegawa^*, T. Kanbara, S. Kagaya, T. Yamamoto

^*この論文の責任著者

工学科　応用化学コース

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

25 被引用数 (Scopus)

抄録

Visible light-induced catalytic degradation of iprobenfos fungicide was investigated using poly(3-octylthiophene-2,5-diyl) (POTh) film by varying oxygen pressure of bubbling gases. The degradation rate increased with the increasing oxygen pressure and obeyed a first-order kinetics in bubbling air. Even after 10 h irradiation (λ>380 nm), the film was substantially stable and no peeling was observed. The quenching of photoluminescence of POTh with O₂ was observed and the formation of active oxygen species such as H₂O₂ and ^•OH was detected spectrophotometrically. An OH adduct of iprobenfos as well as decomposed intermediates and SO_42- was also confirmed. The addition of Fe²⁺ accelerated the photocatalytic degradation of iprobenfos by the POTh film. Based on these results, a photocatalytic degradation mechanism is proposed.

本文言語	英語
ページ（範囲）	59-66
ページ数	8
ジャーナル	Journal of Photochemistry and Photobiology A: Chemistry
巻	133
号	1-2
DOI	https://doi.org/10.1016/S1010-6030(00)00206-9
出版ステータス	出版済み - 2000/05/08

ASJC Scopus 主題領域

化学一般
化学工学一般
物理学および天文学一般

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10.1016/S1010-6030(00)00206-9

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title = "Visible light-induced catalytic degradation of iprobenfos fungicide by poly(3-octylthiophene-2,5-diyl) film",

abstract = "Visible light-induced catalytic degradation of iprobenfos fungicide was investigated using poly(3-octylthiophene-2,5-diyl) (POTh) film by varying oxygen pressure of bubbling gases. The degradation rate increased with the increasing oxygen pressure and obeyed a first-order kinetics in bubbling air. Even after 10 h irradiation (λ>380 nm), the film was substantially stable and no peeling was observed. The quenching of photoluminescence of POTh with O2 was observed and the formation of active oxygen species such as H2O2 and •OH was detected spectrophotometrically. An OH adduct of iprobenfos as well as decomposed intermediates and SO42- was also confirmed. The addition of Fe2+ accelerated the photocatalytic degradation of iprobenfos by the POTh film. Based on these results, a photocatalytic degradation mechanism is proposed.",

keywords = "Active oxygen species, Fungicide, Photocatalytic degradation, Polythiophene film, Visible light",

author = "C. Wen and K. Hasegawa and T. Kanbara and S. Kagaya and T. Yamamoto",

note = "Funding Information: The authors are grateful for the financial support by a grant-in-aid for Scientific Research (No. 10680538) from the Ministry of Education, Science, Sports and Culture of Japan. The authors also wish to thank Miss M. Shinoda for the GC-MS measurement. C. Wen thanks Mr. H. Tsuchikawa for his valuable suggestion on the photo-Fenton reaction and Mr. H. Wang for his useful comments related to analytic method.",

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doi = "10.1016/S1010-6030(00)00206-9",

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T1 - Visible light-induced catalytic degradation of iprobenfos fungicide by poly(3-octylthiophene-2,5-diyl) film

AU - Wen, C.

AU - Hasegawa, K.

AU - Kanbara, T.

AU - Kagaya, S.

AU - Yamamoto, T.

N1 - Funding Information: The authors are grateful for the financial support by a grant-in-aid for Scientific Research (No. 10680538) from the Ministry of Education, Science, Sports and Culture of Japan. The authors also wish to thank Miss M. Shinoda for the GC-MS measurement. C. Wen thanks Mr. H. Tsuchikawa for his valuable suggestion on the photo-Fenton reaction and Mr. H. Wang for his useful comments related to analytic method.

PY - 2000/5/8

Y1 - 2000/5/8

N2 - Visible light-induced catalytic degradation of iprobenfos fungicide was investigated using poly(3-octylthiophene-2,5-diyl) (POTh) film by varying oxygen pressure of bubbling gases. The degradation rate increased with the increasing oxygen pressure and obeyed a first-order kinetics in bubbling air. Even after 10 h irradiation (λ>380 nm), the film was substantially stable and no peeling was observed. The quenching of photoluminescence of POTh with O2 was observed and the formation of active oxygen species such as H2O2 and •OH was detected spectrophotometrically. An OH adduct of iprobenfos as well as decomposed intermediates and SO42- was also confirmed. The addition of Fe2+ accelerated the photocatalytic degradation of iprobenfos by the POTh film. Based on these results, a photocatalytic degradation mechanism is proposed.

AB - Visible light-induced catalytic degradation of iprobenfos fungicide was investigated using poly(3-octylthiophene-2,5-diyl) (POTh) film by varying oxygen pressure of bubbling gases. The degradation rate increased with the increasing oxygen pressure and obeyed a first-order kinetics in bubbling air. Even after 10 h irradiation (λ>380 nm), the film was substantially stable and no peeling was observed. The quenching of photoluminescence of POTh with O2 was observed and the formation of active oxygen species such as H2O2 and •OH was detected spectrophotometrically. An OH adduct of iprobenfos as well as decomposed intermediates and SO42- was also confirmed. The addition of Fe2+ accelerated the photocatalytic degradation of iprobenfos by the POTh film. Based on these results, a photocatalytic degradation mechanism is proposed.

KW - Active oxygen species

KW - Fungicide

KW - Photocatalytic degradation

KW - Polythiophene film

KW - Visible light

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Visible light-induced catalytic degradation of iprobenfos fungicide by poly(3-octylthiophene-2,5-diyl) film

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