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One-pot green and simple synthesis of actinian nickel-doped carbon nanoflowers for ultrasensitive sensing of quercetin

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Abstract

In this contribution, a one-pot method possessing the advantages of easy preparation, rapidness, efficiency and environmental friendliness has been developed for the first time for the facile synthesis of highly fluorescent actinian nickel-doped carbon nanoflowers (Ni-CNFWs) by using nickel(II)acetylacetonate as a metal–carbon source. Various characterization studies indicate that metal nickel atoms have been successfully doped into carbon nanoflower frameworks with a weight percentage of 1.46 wt%. The Ni-CNFWs showed a “shell–core” actinian structure with ∼400 nm diameter and highly efficient fluorescence quenching ability in the presence of quercetin (Qut) due to the formed Meisenheimer complexes via the conjugation effect of p, π-electrons between Ni-CNFWs and Qut, which allowed the analysis of Qut in a very facile method. Under the optimal conditions, the decreased fluorescence of Ni-CNFWs showed a good linear relationship with the concentration of Qut ranging from 0.5 to 300.0 μM, and the limit of detection was 0.137 μM (3σ/k). Finally, the content of Qut in bovine serum was successfully detected with the novel on–off sensor, and the recoveries were 97.3–101.9%, which indicate that the constructed on–off sensor has a high selectivity and accuracy.

Graphical abstract: One-pot green and simple synthesis of actinian nickel-doped carbon nanoflowers for ultrasensitive sensing of quercetin

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Publication details

The article was received on 25 Sep 2019, accepted on 14 Oct 2019 and first published on 14 Oct 2019


Article type: Paper
DOI: 10.1039/C9AN01907C
Analyst, 2019, Advance Article

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    One-pot green and simple synthesis of actinian nickel-doped carbon nanoflowers for ultrasensitive sensing of quercetin

    Y. Gao, X. Jin, F. Kong, Z. Wang and W. Wang, Analyst, 2019, Advance Article , DOI: 10.1039/C9AN01907C

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