研究目的
Investigating the use of a europium metal–organic framework (Eu-MOF) as a multi-responsive luminescent sensor for the detection of Cr2O72?, MnO4?, and Cr3+ ions as well as SDBS in aqueous solutions.
研究成果
The 3D Eu-MOF synthesized in this study exhibits excellent water and pH stability and can serve as a highly sensitive and selective luminescent sensor for Cr2O72?, MnO4?, and Cr3+ ions as well as SDBS in aqueous solutions. The detection limit for Cr2O72? ions is the lowest reported for Ln-MOF-based sensors. The study also introduces the first use of Ln-MOF as a fluorescence probe for SDBS detection and demonstrates the potential for practical applications through the development of fluorescent-based test papers.
研究不足
The study focuses on the detection of specific ions and surfactants in aqueous solutions, and the practical applications may be limited by the need for UV light for visual detection.
1：Experimental Design and Method Selection:
The study involved the synthesis of a 3D Eu-MOF via the solvothermal method and its characterization using PXRD, TGA, and luminescence spectroscopy.
2：Sample Selection and Data Sources:
The Eu-MOF was tested for its luminescence properties in the presence of various anions, metal cations, and surfactants in aqueous solutions.
3：List of Experimental Equipment and Materials:
Equipment included a Bruker Tensor 27 Fourier transform infrared spectrometer, a Model 240 Perkin–Elmer elemental analyzer, and an F-280 FL spectrophotometer. Materials included europium chloride, DMF, and the ligand bpydbH
4：Experimental Procedures and Operational Workflow:
The Eu-MOF was synthesized, characterized, and then tested for its luminescence properties in various solutions. The luminescence intensity was measured before and after the addition of target analytes.
5：Data Analysis Methods:
The quenching effect was analyzed using the Stern–Volmer equation, and the detection limits were calculated.
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