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articleNo Access
One-Step Synthesis of Nitrogen and Chlorine Co-Doped Carbon Quantum Dots for Detection of Fe $^{3 +}$ $^{3 +}$
- Yin Zhong,
- Qi Chen,
- Junjian Li,
- Xihao Pan,
- Zhiwei Han, and
- Wei Dong
Nano01 Nov 2017
Preview Abstract
An environment friendly, economic and maneuverable hydrothermal method was proposed for fabrication of nitrogen and chlorine co-doped carbon quantum dots (N,Cl-CQDs). D-Glucosamine hydrochloride as the only precursor offered source of carbon, nitrogen and chlorine. As a consequent N,Cl-CQDs can emit blue luminescence and detect Fe $^{3 +}$ $^{3 +}$ by fluorescence response with high selectivity and sensitivity. There is a linear semilogarithmic correlation between the quenching efficiency $F_{0} ∕ F$ $F_{0} ∕ F$ and the concentration of Fe $^{3 +}$ $^{3 +}$ with a detection limit of 0.167 $μ$ $μ$ M. The N,Cl-CQDs exhibit a high quantum yield of 16.8% along with the fluorescence lifetime of 2.2ns. It is worth noting that the prepared N,Cl-CQDs show excellent biocompatibility and they are promising materials for sensing and biology.

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