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Reclamation of Water Polluted with Flubendiamide Residues by Photocatalytic Treatment with Semiconductor Oxides
Author(s) -
Fenoll José,
Vela Nuria,
Garrido Isabel,
Navarro Ginés,
PérezLucas Gabriel,
Navarro Simón
Publication year - 2015
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/php.12479
Subject(s) - photocatalysis , photodegradation , leaching (pedology) , ternary operation , degradation (telecommunications) , aqueous solution , semiconductor , materials science , catalysis , photochemistry , chemistry , chemical engineering , environmental science , organic chemistry , optoelectronics , computer science , soil science , soil water , programming language , engineering , telecommunications
The photodegradation of flubendiamide (benzenedicarboxamide insecticide), a relatively new insecticide was investigated in aqueous suspensions binary (ZnO of and TiO 2 ) and ternary (Zn 2 TiO 4 and ZnTiO 3 ) oxides under artificial light (300–460 nm) irradiation. Photocatalytic experiments showed that the addition of semiconductors, especially ZnO and TiO 2 , in tandem with an electron acceptor (Na 2 S 2 O 8 ) enhances the degradation rate of this compound in comparison with those carried out with catalyst alone and photolytic tests. The photocatalytical degradation of flubendiamide using ZnO/Na 2 S 2 O 8 and TiO 2 /Na 2 S 2 O 8 followed first‐order kinetics. In addition, desiodo‐flubendiamide was identified during the degradation of flubendiamide. Finally, application of these reaction systems in different waters (tap, leaching and watercourse) showed the validity of the treatments, which allowed the removal of flubendiamide residues in these drinking and environmental water samples.