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One Spot Microwave Synthesis and Characterization of Nitrogen-Doped Carbon Dots with High Oxygen Content for Fluorometric Determination of Banned Sudan II Dye in Spice Samples

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Abstract

A simple microwave-assisted synthesis of nitrogen-doped carbon dots with high oxygen content (O-N-CDs) was carried out with citric acid as a carbon source and 2,4-diamino-6-methyl-1,3,5-triazine as a nitrogen source in triethylene glycol (TEG) media. It was determined by SEM analysis that O-N-CDs consisted of particles of different sizes and shapes. Transmission electron microscopy (TEM), Raman spectroscopy, and X-ray diffraction (XRD) analysis confirmed that O-N-CDs have a graphitic structure. Moreover, they showed a high fluorescence property based on the excitation wavelength. Therefore, a new fluorometric method was developed for the determination of banned food dye Sudan II by using the O-N-CDs. The proposed method was used in the determination of Sudan II in spiked spice samples. The detection limit was 0.6 mg L−1 and the linear range was 0–8 mg L−1.

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Data Availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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  1. Department of Chemistry, Faculty of Sciences, Karadeniz Technical University, 61080, Trabzon, Turkey

    Bahtışen Ramoğlu, Abidin Gümrükçüoğlu, Ender Çekirge, Miraç Ocak & Ümmühan Ocak

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  1. Bahtışen Ramoğlu
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Ramoğlu, B., Gümrükçüoğlu, A., Çekirge, E. et al. One Spot Microwave Synthesis and Characterization of Nitrogen-Doped Carbon Dots with High Oxygen Content for Fluorometric Determination of Banned Sudan II Dye in Spice Samples. J Fluoresc 31, 1587–1598 (2021). https://doi.org/10.1007/s10895-021-02795-0

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