Abstract
In this work, an “on-off-on” fluorescent probe based on Ni-MOF functionalized Nitrogen-doped carbon quantum dots (Ni-MOF-NCDs) was developed. Ni-MOF-NCDs was characterized by FT-IR, TEM, SEM, and XPS. The presence of Fe (III) will reduce the fluorescence intensity of Ni-MOF-NCDs and “turn off” the fluorescence signal at emission peak of 390 nm, while the signal can be “turn on” after the addition of ascorbic acid (AA). The Ni-MOF-NCDs was established as an “on-off-on” fluorescent probe for the detection of Fe (III) and AA with the linear ranges of 0.029-8.0 µg/mL and 0.263-18.0 µg/mL, respectively. The method has been successfully applied to the detection of water samples and foods with satisfactory recovery. The experimental results showed that Ni-MOF-NCDs not only had the fluorescence properties of NCDs, but also had the adsorption performance of Ni-MOF.
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Funding
This work was supported by the National Natural Science Foundation of China (21375117) and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions and Postgraduate research/practice innovation program of Jiangsu province.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Ouwen Xu, Shuyu Wan, Jing Yang, Hanyang Song, Luzheng Dong, Ji Xia, and Xiashi Zhu. The first draft of the manuscript was written by Ouwen Xu. All authors read and approved the final manuscript.
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Xu, O., Wan, S., Yang, J. et al. Ni-MOF Functionalized Carbon Dots with Fluorescence and Adsorption Performance for Rapid Detection of Fe (III) and Ascorbic Acid. J Fluoresc 32, 1743–1754 (2022). https://doi.org/10.1007/s10895-022-02982-7
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DOI: https://doi.org/10.1007/s10895-022-02982-7