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Issue 33, 2019
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Turn-on fluorescence sensing of hydrazine using MnO2 nanotube-decorated g-C3N4 nanosheets

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Abstract

The current study demonstrates a facile one-pot pyrolysis route to develop photoluminescent graphitic carbon nitride nanosheets (g-C3N4) for the fluorescence detection of hydrazine. The morphological images show that MnO2 nanotubes are decorated over the surface of g-C3N4 nanosheets, and the addition of hydrazine completely topples the MnO2 nanotubes; this uncovers the g-C3N4 nanosheets. The turn-off fluorescence was achieved with the decoration of MnO2 nanostructures on the g-C3N4-nanosheets via the fluorescence resonance energy transfer mechanism. Morphological influences of MnO2 nanostructures on the dynamic quenching of the fluorescence behavior of g-C3N4 nanosheets were analyzed. The fluorescence energy transfer between g-C3N4 and MnO2 was restricted with the addition of hydrazine; this led to the recovery of the fluorescence behavior of g-C3N4. The proposed sensor exhibits high sensitivity, the wide linear range of 2–55 μM, and the low detection limit of 0.12 μM. The developed nanocomposite exhibits excellent selectivity towards hydrazine over common metal ions and molecules with analogous structures. Furthermore, the prepared nanocomposite exhibits good recovery in environmental water samples; this unveils its practical competence in real samples. Conspicuously, this study provides an excellent platform for the development of a competent fluorescent probe and dynamic opportunities for the effectual monitoring of hydrazine in environmental water samples.

Graphical abstract: Turn-on fluorescence sensing of hydrazine using MnO2 nanotube-decorated g-C3N4 nanosheets

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Publication details

The article was received on 16 Mar 2019, accepted on 27 Jun 2019 and first published on 05 Aug 2019


Article type: Paper
DOI: 10.1039/C9NJ01370A
New J. Chem., 2019,43, 13196-13204

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    Turn-on fluorescence sensing of hydrazine using MnO2 nanotube-decorated g-C3N4 nanosheets

    S. S. John Xavier, G. Siva, M. Ranjani, S. Divya Rani, N. Priyanga, R. Srinivasan, M. Pannipara, A. G. Al-Sehemi and G. Gnana kumar, New J. Chem., 2019, 43, 13196
    DOI: 10.1039/C9NJ01370A

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