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Issue 10, 2014
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Fabrication of magnetically separable fluorescent terbium-based MOF nanospheres for highly selective trace-level detection of TNT

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Abstract

In this work, we present novel kinds of Fe3O4@Tb-BTC magnetic metal–organic framework (MOF) nanospheres which possess both magnetic characteristics and fluorescent properties using a layer by layer assembly technique. The structure and morphology of the as-prepared Fe3O4@Tb-BTC were systematically characterized and it was applied in detection of nitroaromatic explosives, such as 2,4-dinitrotoluene (2,4-DNT), 2,6-dinitrotoluene (2,6-DNT), 2-nitrotoluene (2-NT), 4-nitrotoluene (4-NT), nitrobenzene (NB) and picric acid (PA). The results indicate that the fluorescence intensity of Fe3O4@Tb-BTC can be quenched by all analytes studied in the present work. Remarkably, the as-synthesized nanospheres exhibit high sensitivity for 2,4,6-trinitrotoluene (TNT) detection with Ksv value of (94 800 M−1). Besides, the magnetic nanospheres can be easily recycled, which makes it more convenient for reutilization and friendly to the environment. The results show that it has broad application prospects in the detection of nitroaromatic explosives.

Graphical abstract: Fabrication of magnetically separable fluorescent terbium-based MOF nanospheres for highly selective trace-level detection of TNT

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Publication details

The article was received on 04 Oct 2013, accepted on 23 Dec 2013 and first published on 02 Jan 2014


Article type: Paper
DOI: 10.1039/C3DT52777H
Citation: Dalton Trans., 2014,43, 3978-3983
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    Fabrication of magnetically separable fluorescent terbium-based MOF nanospheres for highly selective trace-level detection of TNT

    J. Qian, L. Qiu, Y. Wang, Y. Yuan, A. Xie and Y. Shen, Dalton Trans., 2014, 43, 3978
    DOI: 10.1039/C3DT52777H

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