Europium Activated Aluminum Organic Frameworks for Highly Selective and Sensitive Detection of Fe and Cr(Ⅵ) in Aqueous Solution
Europium Activated Aluminum Organic Frameworks for Highly Selective and Sensitive Detection of Fe3+ and Cr(Ⅵ) in Aqueous Solution作者机构:Key Laboratory of Eco-materials Advanced TechnologyCollege of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China
出 版 物:《Chinese Journal of Structural Chemistry》 (结构化学(英文))
年 卷 期:2020年第39卷第11期
页 面:1958-1964页
核心收录:
学科分类:08[工学] 080202[工学-机械电子工程] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程(可授工学、理学学位)] 0703[理学-化学] 0802[工学-机械工程]
基 金:Supported by the Natural Science Foundation of Fujian Province (2017J01746) National Natural Science Foundation of China (51972061)
主 题:luminescent sensor selective detection quenching mechanism
摘 要:The aluminum based MOFs compound, MIL-96(Al), has been studied as a luminescence sensor by incorporating of Eu3+ ions, which renders the compound strong red-light emission. The as-synthesized MIL-96(Al):Eu3+ nanocrystals exhibit water dispersibility and environmental stability, which are general requirement for an ideal sensing material. The MIL-96(Al):Eu3+ nanocrystals show excellent selective detection ability on Fe3+ ions in aqueous solution with value of low detection limit 20 μM. Meanwhile, it also exhibits excellent selective detection ability on CrO42- and Cr2O72- in aqueous solution with value of low detection limit 10 and 22 μM, respectively. The results of this study show that MIL-96(Al):Eu3+ nanocrystals could be used as a multi-responsive luminescent senor for Fe3+ and Cr(Ⅵ) species in aqueous solution. The possible luminescence quenching mechanism has also been discussed.