Sonophotocatalytic mineralization of Norflurazon in aqueous environment

Sathishkumar, Panneerselvam y Mangalaraja, Ramalinga Viswanathan y Rozas, Oscar y Vergara, Carola y Mansilla, Héctor D. y Gracia Pinilla, Miguel Ángel y Anandan, Sambandam (2015) Sonophotocatalytic mineralization of Norflurazon in aqueous environment. Chemosphere, 146. pp. 216-225. ISSN 0045-6535

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Norflurazon (4-chloro-5-(methylamino)-2-[3- trifluoromethyl)phenyl]pyridazin-3(2H)-one; C12H9ClF3N3O) is an excellent weed controlling agent being practiced in the agricultural lands. The excessive addition or the undissolved Norflurazon (maximum solubility 28 mg/L at 25 C) enters into the aquatic environment and causes the adverse effects associated with its high concentration. To avoid the perilous effects, visible light assisted photocatalysis set-up coupled with the 42 kHz ultrasound producing bath type sonicator is used to completely mineralize the Norflurazon. TiO2, ZnO and gold loaded zinc oxide nanocatalysts were utilized to study the mineralization of Norflurazon. AueZnO shows the greater efficiency for the sonophotocatalytic removal of Norflurazon among the various nanocatalysts employed to study the mineralization. The order of Norflurazon mineralization was sonophotocatalysis > sonocatalysis > photocatalysis. The additive effect was achieved for the sonophotocatalytic degradation. The high performance liquid chromatography (HPLC) and liquid chromatography-mass spectrometric (LCMS) analyses were employed to identify the various intermediates produced during the mineralization. The identification of four pseudo molecular ions and various intermediates using the LCMS analysis evidently suggests the sonophotocatalytic degradation was preceded in various decay pathways. A suitable mechanism has been proposed for the sonophotocatalytic mineralization of Norflurazon

Tipo de elemento: Article
Palabras claves no controlados: Norflurazon; Mineralization; Sonophotocatalysis; Visible light; HPLC and LC-MS analyses
Materias: Q Ciencia > QC Física
Q Ciencia > QD Química
T Tecnología > TP Tecnología Química
Divisiones: Ciencias Físico Matemáticas
Usuario depositante: Dr. Miguel Ángel Gracia-Pinilla
Creadores:
CreadorEmailORCID
Sathishkumar, PanneerselvamNO ESPECIFICADONO ESPECIFICADO
Mangalaraja, Ramalinga ViswanathanNO ESPECIFICADONO ESPECIFICADO
Rozas, OscarNO ESPECIFICADONO ESPECIFICADO
Vergara, CarolaNO ESPECIFICADONO ESPECIFICADO
Mansilla, Héctor D.NO ESPECIFICADONO ESPECIFICADO
Gracia Pinilla, Miguel Ángelmiguelchem@gmail.comNO ESPECIFICADO
Anandan, SambandamNO ESPECIFICADONO ESPECIFICADO
Fecha del depósito: 03 Nov 2016 22:04
Última modificación: 16 Ene 2017 15:11
URI: http://eprints.uanl.mx/id/eprint/11596

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