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Selective recognition of Fe3+ and Cr3+ in aqueous medium via fluorescence quenching of graphene quantum dots.
- Source :
-
Journal of Dispersion Science & Technology . 2019, Vol. 40 Issue 2, p250-255. 6p. 2 Diagrams, 8 Graphs. - Publication Year :
- 2019
-
Abstract
- Graphene quantum dots (GQDs) have been prepared from graphene oxide (GO) and characterized by standard analytical techniques. The size of the prepared GQDs ranges from 2-10 nm. Aqueous dispersion of GQDs exhibited excitation-dependent emission behavior. Emission intensity of the aqueous dispersion found stable for the examined duration of about four months. GQDs exhibited selective recognition of Fe3+ and Cr3+ out of various common ions such as alkali, alkaline-earth and transition metal ions in aqueous medium through fluorescence quenching. The lower limit of detection of Fe3+ is 1 μM and that of Cr3+ is 4 μM. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01932691
- Volume :
- 40
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Dispersion Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 137228050
- Full Text :
- https://doi.org/10.1080/01932691.2018.1467775