Citation: Liu Qin, Zhu Debin, Guo Manli, Yu Ying, Cao Yujuan. Facile and efficient fabrication of g-C₃N₄ quantum dots for fluorescent analysis of trace copper(Ⅱ) in environmental samples[J]. Chinese Chemical Letters, ;2019, 30(9): 1639-1642. doi: 10.1016/j.cclet.2019.05.058 shu

Facile and efficient fabrication of g-C₃N₄ quantum dots for fluorescent analysis of trace copper(Ⅱ) in environmental samples

School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China

caoyj@scnu.edu.cn

Received Date: 25 April 2019
Revised Date: 27 May 2019
Accepted Date: 28 May 2009
Available Online: 29 September 2019

Figures(7)

The facile preparation of g-C₃N₄ QDs with high fluorescent performance has become an important direction in the last decade. Herein, we develop a facile, rapid approach to synthesize highly fluorescent QDs based on recrystallization and ultrasonic exfoliation. Size-controllable graphitic carbon nitride (g-C₃N₄) QDs can be obtained from the precursor of recrystallized dicyandiamide, only 90 min is needed and the size of QDs is adjusted from 5 nm to 200 nm by controlling the ultrasonic time. Moreover, better fluorescent efficiency is also obtained comparing to traditional g-C₃N₄ QDs. The obtained g-C₃N₄ QDs responds to Cu(Ⅱ) in the 0.5 nmol/L to 30 μmol/L concentration range, with a 0.3 nmol/L detection limit. The method was applied to the determination of Cu(Ⅱ) in different environmental water samples.
- Graphitic carbon nitride,
- Quantum dots,
- Recrystallized,
- Fluorescent analysis,
- Copper(Ⅱ)
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沈阳化工大学材料科学与工程学院沈阳 110142

Facile and efficient fabrication of g-C3N4 quantum dots for fluorescent analysis of trace copper(Ⅱ) in environmental samples

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通讯作者: 陈斌, bchen63@163.com

Facile and efficient fabrication of g-C₃N₄ quantum dots for fluorescent analysis of trace copper(Ⅱ) in environmental samples