Ahern John, Kanan Sofian, Sara Ziad, Job Thomas, Alnaizy Raafat, Abu Farha Nedal, Patterson Howard
Department of Chemistry, University of Maine, Orono, ME, 04469, USA.
Environ Sci Pollut Res Int. 2015 Mar;22(5):3186-92. doi: 10.1007/s11356-014-2621-5. Epub 2014 Feb 25.
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.
制备并表征了两种掺杂银的Y型沸石样品。电感耦合等离子体质谱（ICP）和扫描电子显微镜-能谱分析（SEM-EDS）表明，AgY1样品中的银含量是AgY2样品的两倍。固态发光光谱显示了位点选择性发光的发射模式变化，在选择合适的激发能量时，各种发光体可能会被激发。所选材料有效地分解了水溶液中的农药苯氧威。在AgY1催化剂存在下，照射60分钟后，苯氧威的光分解率达到80%。2-(4-苯氧基-苯氧基)乙基]氨基甲酸（1）和1-氨基-2-(苯氧基-4-醇)乙烷（2）被鉴定为未催化溶液和用AgY2催化剂催化苯氧威反应的产物。然而，化合物（2）是用AgY1催化反应中唯一鉴定出的产物。
