Green synthesis of fluorescent carbon quantum dots for the detection of mercury(ii) and glutathione. (16th March 2018)

• Record Type: Journal Article
• Authors: Bano, Daraksha; Kumar, Vijay; Singh, Vikas Kumar; Hasan, Syed Hadi
• Is Part Of: New journal of chemistry. Volume 42:Number 8(2018)
• Page Start: 5814
• Page End: 5821
• Publication Date: 2018-03-16
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c8nj00432c
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : On–off–on detection of Hg 2+ and GSH using green-synthesized CQDs from T. indica leaves for the first time. 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 Hg 2+ 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 Hg 2+ . Thus, the present sensing system is reliable for sensing and several another analytical applications.