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Selective fluorescence sensing of p-nitroaniline and Fe3+ ions by luminescent Eu-based metal-organic framework

Yanyan Pu (College of Environment and Chemical Engineering and State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, China)
Zongchao Yu (College of Environment and Chemical Engineering and State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, China)
Fengqin Wang (College of Environment and Chemical Engineering and State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, China)
Yiyuan Fu (College of Environment and Chemical Engineering and State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, China)
Tao Yan (Development and Planning Department, Tianjin Polytechnic University, Tianjin, China)
Honglin Cheng (Dagang Tiancheng Chemical Plant in Tianjin Binhai New Area, Tianjin, China)

Sensor Review

ISSN: 0260-2288

Article publication date: 12 October 2018

Issue publication date: 18 March 2019

Abstract

Purpose

The purpose of this study is to develop luminescence sensors for the detection of nitroaromatic compounds (NACs) and metal ions to protect human health and prevent environmental pollution.

Design/methodology/approach

The composition and morphology of Eu-metal-organic frameworks (MOF) (1) were well characterized by powder X-ray diffraction, elemental analyses, Fourier-transform infrared spectroscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy and scanning electron microscopy. The emission spectrum displays that 1 has significant characteristic emission bands of Eu(III) ions. The authors further investigated the fluorescence sensing performances of 1 to NACs and metal ions.

Findings

The results show that Eu-MOF (1) exhibits significant fluorescence quenching effect toward p-nitroaniline and Fe3+ ions with good stability and recyclability. This means that 1 can be used as a multifunctional sensing material for the detection of p-nitroaniline and Fe3+ ions.

Originality/value

The authors have successfully synthesized a fluorescence Eu-based sensing material under hydrothermal conditions. In addition, the fluorescence property and sensing performances for detecting NACs and metal ions were studied. The results suggest that 1 has highly selective fluorescence quenching toward p-nitroaniline and Fe3+ ions with not only high sensitivity and selectivity but also excellent stability and recyclability. Furthermore, this study has confirmed that the multifunctional MOF material is very useful in environment pollutants’ detection and monitoring.

Keywords

Acknowledgements

This project is supported by NSFC (Grant no. 21271138) and the NSF of Tianjin (No. 14JCYBJC17500), the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry of Jilin University (No. 2015-02), The Science and Technology Plans of Tianjin (No. 15PTSYJC00230) and The 2016 National College Students’ innovation and entrepreneurship training program (201610058013). The author(s) of this article have not made their research data set openly available. Any enquiries regarding the data set can be directed to the corresponding author.

Citation

Pu, Y., Yu, Z., Wang, F., Fu, Y., Yan, T. and Cheng, H. (2019), "Selective fluorescence sensing of p-nitroaniline and Fe3+ ions by luminescent Eu-based metal-organic framework", Sensor Review, Vol. 39 No. 2, pp. 149-161. https://doi.org/10.1108/SR-08-2017-0153

Publisher

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Emerald Publishing Limited

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