Controllable synthesis of Tb-based metal-organic frameworks as an efficient fluorescent sensor for Cu2+ detection

• 作者: Cheng-Li Dong Ming-Feng Li Ting Yang Li Feng Ying-Wei Ai Zhang-Lei Ning Meng-Jiao Liu Xin Lai Dao-Jiang Gao
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: ADVANCED MOF-BASED MATERIALS FOR ENERGY CONVERSION AND STORAGE
• 页码范围: 505-512
• 页数: 8页
• 语种: 英文

摘要

A series of Tb-based metal-organic frameworks (Tb-MOFs) were successfully synthesized by a solvothermal method.The size and morphology of the as-obtained Tb-MOFs can be effectively controlled via regulating the experimental conditions such as the volume fraction of DMF and the molar ratio of Tb3+ to NaOH.It is found that all the samples exhibit strong green emissions under ultraviolet excitation,corresponding to 5D4 → 7FJ transitions of Tb3+.Interestingly,Tb-MOFs displayed an efficient and distinct luminescence quenching by Cu2+ in aqueous solutions.The competitive fluorescence detection experiments indicate that these Tb-MOFs sensors can be used as a high selective and sensitive sensor of Cu2+ detection with the detection limit of 10 μmol·L-1,which can be used as a promising fluorescence sensor for Cu2+ detection in daily life.