铽
亚硝酸盐
荧光
铁
水溶液中的金属离子
化学
镧系元素
水溶液
无机化学
金属
溶剂热合成
晶体结构
离子
猝灭(荧光)
金属有机骨架
发光
材料科学
有机化学
结晶学
物理化学
硝酸盐
吸附
物理
量子力学
光电子学
作者
Xiupei Yang,Maoxue Zhang,Jing Xu,Shaohua Wen,Yi Zhang,Jie Zhang
标识
DOI:10.1016/j.saa.2021.119553
摘要
Through a solvothermal reaction between the corresponding lanthanide(III) nitrate, 1,10 o-phenanthroline and pyridine 3,5-dicarboxylic acid ligands, a novel two-dimensional terbium-based metal-organic framework (Tb-MOF), named {Tb2O0.5(C12H8N2)2(C7H3NO4)3(H2O)2.75}n (1) with strong fluorescence was synthesized by hydrothermal method. The single crystal structure and phase purity of the as-synthesized Tb-MOF were verified by single crystal X-ray diffraction. Subsequently, some studies on the morphology, structure, and optical properties of the compound were carried out. The results show that the synthesized Tb-MOF (1) can be used for the fluorescence sensing of nitrite and ferric ions. Simultaneously, the as-synthesized crystal structure offers good chemical stability in different environments, such as common organic solvents, solutions with a wide pH range, and aqueous solutions of metal ions. Besides, it has good chemical stability in a certain temperature range. In addition, a detection method for nitrite and iron ions was established based on the principle of fluorescence quenching of Tb-MOF by the analytical target, showing good recovery and precision. The proposed method provides a reliable new method for detecting nitrite and ferric ions concentrations in actual water samples.
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