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- W4291017797 endingPage "107867" @default.
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- W4291017797 abstract "A stable carbon quantum dots doped with nitrogen (N-CQDs), co-doped with silver (N/Ag-CQDs), and co-doped with cerium N/Ce-CQDs were synthesized using hydrothermal method. As-synthesized N/Ag-CQDs and N/Ce-CQDs showed high quantum yield compared to N-CQDs. These carbon quantum dots were used as a probe for the detection of mercury and captopril. The fluorescence quenching (turn-off) of N-CQDs, N/Ag-CQDs and N/Ce-CQDs was occured with the addition of Hg2+ ion. On the other hand, captopril showed fluorescence recovery (turn-on) of N-CQDs, N/Ag-CQDs and N/Ce-CQDs which are quenched by Hg2+ ion. The fluorescence recovery of CQDs is due to the high affinity of thiol group of captopril towards Hg2+ ion to form Hg-S bonds. On the basis of fluorescence quenching (turn-off), Hg2+ was determined with low limit of detection of 1.43 nM, 0.93 nM and 1.38 nM using N-CQDs, N/Ag-CQDs and N/Ce-CQDs, respectively as fluorescence nanoprobes. The fluorescence turn-on of the CQDs has been applied for the detection of captopril with low limit of detection of 1.65 µM, 0.46 µM and 1.22 µM using N-CQDs, N/Ag-CQDs, and N/Ce-CQDs respectively. The developed sensing probe showed good sensitivity and high fluorescence efficiencies." @default.
- W4291017797 created "2022-08-13" @default.
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- W4291017797 date "2022-11-01" @default.
- W4291017797 modified "2023-10-16" @default.
- W4291017797 title "N-doped, silver, and cerium co-doped carbon quantum dots based sensor for detection of Hg2+ and captopril" @default.
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- W4291017797 doi "https://doi.org/10.1016/j.microc.2022.107867" @default.
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