title: Photocatalysis of fenoxycarb over silver-modified zeolites.
abstract: Two samples of silver doped into zeolite Y were prepared and characterized. ICP and SEM-EDS analysis indicate that the AgY1 sample contains twice the amount of silver compared to the AgY2 sample. Solid state luminescence spectroscopy shows variations in the emission modes of the site-selective luminescence where various luminophores might be excited upon selecting the proper excitation energy. The selected material effectively decomposed the pesticide fenoxycarb in aqueous solution. The photodecomposition of fenoxycarb reached 80 % upon irradiation for 60 min in the presence of the AgY1 catalyst. 2-(4-Phenoxy-phenoxy)ethyl] carbamic acid (1) and 1-amine-2-(phenoxy-4-ol) ethane (2) were identified as products for both uncatalyzed solution and the catalyzed fenoxycarb with AgY2 catalyst. Whereas, compound (2) was the only product identified in the catalyzed reaction with AgY1.
authors.affiliation: Department of Chemistry, University of Maine, Orono, ME, 04469, USA.
authors.forename: John
authors.initials: J
authors.lastname: Ahern
authors.forename: Sofian
authors.initials: S
authors.lastname: Kanan
authors.forename: Ziad
authors.initials: Z
authors.lastname: Sara
authors.forename: Thomas
authors.initials: T
authors.lastname: Job
authors.forename: Raafat
authors.initials: R
authors.lastname: Alnaizy
authors.forename: Nedal
authors.initials: N
authors.lastname: Abu Farha
authors.forename: Howard
authors.initials: H
authors.lastname: Patterson
mesh_terms: D002384:Catalysis; D007306:Insecticides / Q000737:chemistry*; D049449:Luminescence; D048448:Phenylcarbamates / Q000737:chemistry*; D010782:Photolysis; D012834:Silver / Q000737:chemistry* / Q000528:radiation effects; D013057:Spectrum Analysis; D014466:Ultraviolet Rays; D017641:Zeolites / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D007306:Insecticides; D048448:Phenylcarbamates; D017641:Zeolites; D012834:Silver; C052034:fenoxycarb