Issue 8, 2018

Green synthesis of fluorescent carbon quantum dots for the detection of mercury(ii) and glutathione

Abstract

Herein, we report a green synthetic approach for the synthesis of water-soluble fluorescent CQDs via a simple one-step hydrothermal treatment using Tamarindus indica leaves for the first time. The prepared CQDs show an excitation-dependent behavior in the range from 260 to 400 nm with a high QY of approximately 46.6%. Further, the prepared CQDs serve as a very sensitive nanoprobe for the turn-off sensing of Hg2+ with a minimum LOD as low as 6 nM in the dynamic range from 0 to 0.1 μM. The attractiveness of the present sensing system is that it further acts as a turn-on sensor for GSH detection with good selectivity. The feasibility of the present sensing system is also examined using pond water samples for the detection of Hg2+. Thus, the present sensing system is reliable for sensing and several another analytical applications.

Graphical abstract: Green synthesis of fluorescent carbon quantum dots for the detection of mercury(ii) and glutathione

Supplementary files

Article information

Article type
Paper
Submitted
25 Jan 2018
Accepted
28 Feb 2018
First published
02 Mar 2018

New J. Chem., 2018,42, 5814-5821

Green synthesis of fluorescent carbon quantum dots for the detection of mercury(II) and glutathione

D. Bano, V. Kumar, V. K. Singh and S. H. Hasan, New J. Chem., 2018, 42, 5814 DOI: 10.1039/C8NJ00432C

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