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Issue 4, 2019
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Nitrogen-doped carbon dots derived from electrospun carbon nanofibers for Cu(II) ion sensing

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Abstract

Nitrogen-doped carbon dots were facilely synthesized via the chemical breakdown of electrospun polyacrylonitrile-based carbon nanofibers. The results of transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy demonstrated that the prepared N-doped carbon dots with a relatively narrow size distribution exhibited abundant C, N, and O containing functional groups. In the meantime, aqueous N-doped carbon dots exhibited excitation-dependent photoluminescence. Moreover, due to the quenching effect induced by the strong coordination interaction between the Cu2+ ions and the surface functional groups of the obtained N-doped carbon dots, an efficient fluorescent sensing platform was developed to detect Cu2+ ions, showing high sensitivity and selectivity to Cu2+ ions with a detection limit of 5 nM in the linear range of 0–10 μM. This work has provided a simple and effective approach for fabricating N-doped carbon dots as a promising fluorescent material for heavy metal sensing.

Graphical abstract: Nitrogen-doped carbon dots derived from electrospun carbon nanofibers for Cu(ii) ion sensing

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Publication details

The article was received on 30 Nov 2018, accepted on 13 Dec 2018 and first published on 14 Dec 2018


Article type: Paper
DOI: 10.1039/C8NJ06069J
Citation: New J. Chem., 2019,43, 1812-1817

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    Nitrogen-doped carbon dots derived from electrospun carbon nanofibers for Cu(II) ion sensing

    Y. Li, Z. Liu, L. Bai and Y. Liu, New J. Chem., 2019, 43, 1812
    DOI: 10.1039/C8NJ06069J

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