Copper nanoparticle-decorated nitrogen-doped carbon nanosheets for electrochemical determination of paraquat

Copper nanoparticle-decorated nitrogen-doped carbon nanosheets for electrochemical determination of paraquat

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Bibliographic Details
Published in:Microchimica acta. - Springer Vienna, 1937. - 190(2023), 7 vom: 07. Juni
Main Author: Zhou, Jie (Author)
Other Authors: Zhao, Zongshan (Author) Zhao, Xue (Author) Toan, Sam (Author) Wang, Lei (Author) Wågberg, Thomas (Author) Hu, Guangzhi (Author)
Format: electronic Article
Language:English
Published: 2023
ISSN:1436-5073
External Sources:lizenzpflichtig
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245 1 0 |a Copper nanoparticle-decorated nitrogen-doped carbon nanosheets for electrochemical determination of paraquat 
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500 |a © The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. 
520 |a Abstract A new strategy to prepare copper (Cu) nanoparticles anchored in nitrogen-doped carbon nanosheets (CuCN) has been designed and the nanomaterial applied to the determination of paraquat (PQ). The nanocomposite materials were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and several other techniques. We found that the Cu nanoparticles are uniformly distributed on the carbon materials, providing abundant active sites for electrochemical detection. The electrochemical behavior of the Cu@CN-based PQ sensor was investigated by square-wave voltammetry (SWV). Cu@CN exhibited excellent electrochemical activity and PQ detection performance. The Cu@CN-modified glassy carbon electrode (Cu@CN/GCE) exhibited excellent stability, favorable sensitivity, and high selectivity under optimized conditions (enrichment voltage −0.1 V and enrichment time 400 s) of the SWV test. The detection range reached 0.50 nM to 12.00 μM, and the limit of detection was 0.43 nM with high sensitivity of 18 μA·$ μM^{−1} $·$ cm^{−2} $. The detection limit is 9 times better than that of the high-performance liquid chromatography method. The Cu@CN electrochemical sensor demonstrated excellent sensitivity and selectivity also in environmental water and fruit samples enabling its use in practical, rapid trace-level detection of PQ in environmental samples. Graphical abstract 
650 4 |a Nitrogen-doped carbon nanosheets 
650 4 |a Copper nanoparticles 
650 4 |a Paraquat 
650 4 |a Food analysis 
650 4 |a Square-wave voltammetry 
700 1 |a Zhao, Zongshan  |4 aut 
700 1 |a Zhao, Xue  |4 aut 
700 1 |a Toan, Sam  |4 aut 
700 1 |a Wang, Lei  |4 aut 
700 1 |a Wågberg, Thomas  |4 aut 
700 1 |a Hu, Guangzhi  |0 (orcid)0000-0003-0324-2788  |4 aut 
773 0 8 |i Enthalten in  |t Microchimica acta  |d Springer Vienna, 1937  |g 190(2023), 7 vom: 07. Juni  |h Online-Ressource  |w (DE-627)254630979  |w (DE-600)1462152-6  |w (DE-576)07452979X  |x 1436-5073  |7 nnns 
773 1 8 |g volume:190  |g year:2023  |g number:7  |g day:07  |g month:06 
856 4 0 |u https://dx.doi.org/10.1007/s00604-023-05812-0  |z lizenzpflichtig  |3 Volltext 
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