Abstract
In this work, a cheap, simple, selective and sensitive turnoff fluorescent sensor was presented for Pb2+ determination. N-doped carbon dots (N-CDs) were synthesized by microwave-assisted method. Characterization of N-CDs was performed by transmission electron microscopy, dynamic light scattering and Fourier transform infrared spectroscopy. The important parameter (pH, concentration of carbon dots: CCDs and time) was optimized with Doehlert experimental design and response surface methodology. Optimum condition for maximum turnoff was pH 3, CCDs 8 mg mL−1 and 5 min. Limit of detection and linear range was 0.02 µM and 0.05–25 µM.
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Tabaraki, R., Abdi, O. Fluorescent sensing of Pb2+ by microwave-assisted synthesized N-doped carbon dots: application of response surface methodology and Doehlert design. J IRAN CHEM SOC 17, 839–846 (2020). https://doi.org/10.1007/s13738-019-01815-y
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DOI: https://doi.org/10.1007/s13738-019-01815-y