Citation: Chaojun Wu, Mingcai Yin, Wenli Zhang, Yaoting Fan. A Facile Hydrothermal Synthesis and Fluorescent Property of Graphitic Carbon Nitride Quantum Dots[J]. Chemistry, ;2021, 84(4): 377-382. shu

A Facile Hydrothermal Synthesis and Fluorescent Property of Graphitic Carbon Nitride Quantum Dots

College of Chemistry, Zhengzhou University, Zhengzhou, 450001

Corresponding author: Mingcai Yin, mcyin@zzu.edu.cn
Received Date: 22 September 2020
Accepted Date: 2 November 2020

Figures(7)

In this paper, carbon nitride quantum dots (CN QDs) was successfully prepared by a facile hydrothermal reaction in pure water by using linear graphitic carbon nitride (Lg-CN) as starting material, without the existence of strong acid. The CN QDs were characterized by FT-IR, XRD, TEM, XPS, and its optical properties were determined by UV-Vis absorption and fluorescence spectra. In addition, the formation mechanism of CN QDs was elucidated. The results showed that in accordance with previous reports, on one side, the fluorescence of CN QDs is related to the excitation wavelength. On the other side, the fluorescent intensity and emission wavelength of CN QDs are influenced by the pH of CN QDs aqueous solution. Under pH 7, a maximum intensity was achieved. In addition, the fluorescence of CN QDs can be significantly quenched by Fe³⁺. So it can be used for selective determination of Fe³⁺. This new method for the synthesis of CN QDs provided in this manuscript can avoid both the tedious operations and the hazards caused by using of strong acids.
- Graphitic carbon nitride,
- Linear carbon nitride,
- Quantum dots,
- Hydrothermal reaction,
- Luminescent property
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