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Fluorescent sensing of Pb2+ by microwave-assisted synthesized N-doped carbon dots: application of response surface methodology and Doehlert design

  • Reza TabarakiEmail author
  • Omran Abdi
Original Paper
  • 8 Downloads

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.

Keywords

Carbon dots Fluorescence Microwave Doehlert Response surface methodology 

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Copyright information

© Iranian Chemical Society 2019

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of ScienceIlam UniversityIlamIran

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