publication . Article . 2017

Naked eye and smartphone applicable detection of toxic mercury ions using fluorescent carbon nanodots

Burcu Baç; Rükan Genç;
Open Access
  • Published: 01 Dec 2017
  • Publisher: TÜBİTAK
Abstract
Chitosan passivated carbon nanodots (C-Dots$_{CHIT})$ were synthesized from expired molasses via a simple and green thermal synthesis procedure. As-synthesized C-Dots were nitrogen-doped (NC-Dots$_{CHIT})$ by posttreatment with liquid ammonia and used as nanoprobes for fluorometric detection of mercury ions (Hg(II)$_{aq.})$. Fluorescence response of NC-Dots$_{CHIT}$ in the presence of mercury was evaluated and compared with that of the polyethylene glycol passivated C-Dots$_{PEG}$. This sensing strategy using NC-Dots$_{CHIT}$ displayed a wide linear working range from 1.25 $\mu $g/mL to 43.54 $\mu $g/mL with a detection limit of 1.41 $\mu $g/mL. The fluorescence...
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free text keywords: Mercury sensing,fluorescent carbon nanodots,nanoprobes,smartphone, Mercury (element), chemistry.chemical_element, chemistry, Copper, Naked eye, Zinc, Quenching (fluorescence), Fluorescence, Detection limit, Analytical chemistry, Fluorescence spectroscopy
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