Preprint Article Version 1 This version is not peer-reviewed

Synthesis of Carbon dots-based Fluorescent Probe for the High Selective Detection of Mercury Ions

Version 1 : Received: 24 August 2018 / Approved: 24 August 2018 / Online: 24 August 2018 (12:29:30 CEST)

How to cite: Song, L.; Cui, Y.. Synthesis of Carbon dots-based Fluorescent Probe for the High Selective Detection of Mercury Ions. Preprints 2018, 2018080436 (doi: 10.20944/preprints201808.0436.v1). Song, L.; Cui, Y.. Synthesis of Carbon dots-based Fluorescent Probe for the High Selective Detection of Mercury Ions. Preprints 2018, 2018080436 (doi: 10.20944/preprints201808.0436.v1).

Abstract

Fluorescent carbon dots (C-dots) were synthesized by one pot hydrothermal treatment of garlic juice at 180 °C for 7h. The as-prepared C-dots with an average diameter of 2.13±0.71 nm can be well dispersed, and show absinthe fluorescence with a quantum yield of 8.9% in water. The C-dots were fully characterized by TEM, XPS, XRD, and FTIR, respectively. Additionally, the as-prepared C-dots reveal nearly nontoxic to SW480 cells and can be used for cell imaging. The water solution of C-dots show sensitivity to pH values and metal ions, and also have a high selectivity to the Hg2+ ion among other transition metal ions, and achieve a high sensitive detection with the detection limit of 0.45 μM. The fluorescent C-dots are expected to be useful for the evaluation of mercury ions in environmental water system.

Subject Areas

Fluorescent carbon dots, hydrothermal treatment, characterization, cell imaging, mercury ions, selective and sensitive detection

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