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Red-emissive nitrogen doped carbon quantum dots for highly selective and sensitive fluorescent detection of alachlor herbicide in soil samples

Abstract

Red-emissive nitrogen doped carbon quantum dots (N-CQDs) were synthesized by a facile and efficient microwave-assisted hydrothermal treatment of p-phenylenediamine (p-PD), and then applied for the highly selective and sensitive fluorescent detection of alachlor herbicide in soil samples. The synthesized N-CQDs exhibited a strong red emission with 27.6% quantum yield (QY) and high stability. Under the optimized experimental conditions, the as-prepared red-emissive N-CQDs were employed as fluorescent probe to successfully detect trace alachlor, and its fluorescence presented a good linear decline with the increase of alachlor concentration from 0.005 to 150 μM with a limit of detection of 0.2 nM. The N-CQDs as fluorescence probe was used for the detection of alachlor in soil samples with satisfying recoveries ranging from 86.6-114.3%, indicating it was a promising fluorescent probe for highly selective and sensitive determination of alachlor.

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Supplementary files

Publication details

The article was received on 15 Aug 2019, accepted on 28 Oct 2019 and first published on 28 Oct 2019


Article type: Paper
DOI: 10.1039/C9NJ04232F
New J. Chem., 2019, Accepted Manuscript

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    Red-emissive nitrogen doped carbon quantum dots for highly selective and sensitive fluorescent detection of alachlor herbicide in soil samples

    F. Du, Z. Cheng, Z. Lai, G. Ruan and C. Zhao, New J. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9NJ04232F

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