Abstract
A fluorescent probe based on the functionalized carbon quantum dots (CQDs-OPD) was successfully synthesized for selective and sensitive detection of Cu2+. Using O-phenylenediamine (OPD) as the carbon resource and N,N-dimethylformamide (DMF) as the solvent, the CQDs-OPD was prepared by the hydrothermal method. The fluorescence mechanism of CQDs-OPD was studied by the intercept method. Furthermore, the probe was characterized by TEM, UV–Vis, FT-IR and Zeta potentiometric analysis, the fluorescent probe exhibits a good fluorescence properties and stability. The prepared ratio-fluorescent probe shows a good linear range from 0 to 25 μmol/L with a lower LOD of 40 nmol/L. Moreover, the probe also has been successfully applied to the detection of Cu2+ in the real samples with the recovery rate of 96.92–97.80% and the RSD of less than 2.0%.
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (Grant No. 32072297), Science and Technology Planning Social Development Project of Jiangsu Province (Grant No. BE2018694), Science and Technology Planning Modern Agriculture Project of Zhenjiang City (Grant No. NY2019014), Scientific Research Foundation of Jiangsu University (Grant No. Y19A010), the Fifth phase “169 Project” training fund of Zhenjiang and Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment.
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Yang, W., Wu, C., Wang, N. et al. Preparation of the Ratio-Fluorescence Probe Based on O-phenylenediamine for Selective and Sensitive Detection of Cu2+. J Inorg Organomet Polym 31, 4177–4187 (2021). https://doi.org/10.1007/s10904-021-02030-0
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DOI: https://doi.org/10.1007/s10904-021-02030-0