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Fluorescence-based detection of mercury ions using carbon dots: role of synthesis route.
- Source :
-
Materials Technology . Dec2022, Vol. 37 Issue 14, p2893-2906. 14p. - Publication Year :
- 2022
-
Abstract
- This work demonstrates the significance of the synthesis routes, namely microwave and hydrothermal methods, of green-emitting carbon dots prepared from the same precursors in the selective detection of Hg2+ ions. Aside from providing the advantage of a shorter time scale for the synthesis of C-dots (5 min) compared to the hydrothermal route (8 h) at a synthesis temperature of 180°C, the C-dots prepared via the microwave synthesis route exhibit higher absolute quantum yield (1.8 times) while retaining similar pH and concentration-dependent emission properties. Due to the difference in surface nitrogen content, the microwave synthesized C-dot fluorescence emission exhibit a linear behavior from 8 nM to 64 nM of Hg2+ ions and provides a limit of detection of 3.09 nM whereas hydrothermally synthesized particles exhibit linear variation from 0.5 µM to 4 µM with a detection limit of 0.22 µM. [ABSTRACT FROM AUTHOR]
- Subjects :
- *QUANTUM dots
*MERCURY
*DETECTION limit
*IONS
*CARBON
*MICROWAVES
Subjects
Details
- Language :
- English
- ISSN :
- 10667857
- Volume :
- 37
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- Materials Technology
- Publication Type :
- Academic Journal
- Accession number :
- 160454028
- Full Text :
- https://doi.org/10.1080/10667857.2022.2085441