A facile synthesized Eu-based metal–organic frameworks sensor for highly selective detection of volatile organic compounds

Hierarchically uniform three-dimensional europium-based metal–organic frameworks (Eu-MOFs) have been successfully fabricated via a facile and mild liquid precipitation method at room temperature. The morphology, structure, and composition of samples are well characterized by scanning electron micros...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2019-11, Vol.30 (21), p.19247-19253
Main Authors: Feng, Li, Dong, Chengli, Jiang, Wenlian, Gu, Xiaoling, Xiao, Mengjia, Li, Chenxi, Ning, Zhanglei, Gao, Daojiang
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Emission analysis
Europium compounds
Fluorescence
Fourier transforms
Infrared analysis
Materials Science
Metal-organic frameworks
Morphology
Optical and Electronic Materials
Response time
Selectivity
Sensors
Styrenes
Thermogravimetric analysis
Ultraviolet radiation
VOCs
Volatile organic compounds
X ray powder diffraction
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Summary:Hierarchically uniform three-dimensional europium-based metal–organic frameworks (Eu-MOFs) have been successfully fabricated via a facile and mild liquid precipitation method at room temperature. The morphology, structure, and composition of samples are well characterized by scanning electron microscopy, X-ray powder diffraction, fourier transform infrared spectroscopy, thermogravimetric analysis, and elemental analyses, respectively. These well-arranged Eu-MOFs architectures show red emission corresponding to the 5 D 0 / 7 F 2 transition of the Eu 3+ ions under UV light excitation. Remarkably, these Eu-MOFs samples exhibit clear “turn-off” quenching response for styrene vapors with high selectivity and reusability. This Eu-MOFs fluorescent sensor realizes fast recognition for styrene with a response time of less than 1 min at room temperature. Moreover, good detection reproductivity could also be achieved in this sensor. Considering the easy preparation, high selectivity and excellent repeatability, the sensor system provides a convenient and reliable detection of volatile organic compound in everyday applications.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-019-02283-z