Selective determination of Ag(+) using Salecan derived nitrogen doped carbon dots as a fluorescent probe

Materials Science & Engineering. C, Materials for Biological Applications
Junjian LiWei Dong

Abstract

We report that nitrogen doped carbon dots (N-CDs) represent a viable fluorescent probe for the determination of Ag(+). The N-CDs can be fairly easily prepared by a hydrothermal treatment method using Salecan and dicyandiamide as the precursors, display excitation/emission maxima of 350/438nm. The N-CDs have an average diameter of about 3.8nm. The N-CDs exhibited blue fluorescence (quantum yield of 13.2%) and could response to Ag(+) selectively and sensitively. Other ions nearly had no interference. The probe has excellent selectivity, high sensitivity, and a linear response range that extends from 0 to 40μM. The limit of detection is as low as 1.12×10(-7)mol/L. The method was applied to the determination of Ag(+) dissolved in water.

Citations

Oct 19, 2017·Luminescence : the Journal of Biological and Chemical Luminescence·Junjian LiWei Dong
Jul 31, 2021·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Guili GeCan Guo
Nov 12, 2021·Analytical Methods : Advancing Methods and Applications·Sijie ChengYong Zhang

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