N-Doped Carbon Dots Derived from Melamine and Triethanolamine for Selective Sensing of Fe³⁺ Ions

Figure 4

(a) UV-vis spectra of NCDs in the presence of different metal ions. (b) UV-vis spectra of NCDs with the gradual increase in the concentration of Fe³⁺. (c) PL spectra of NCDs in the presence of various metal ions. (d) Bar diagrams showing selectivity of NCDs towards Fe³⁺ sensing. All the experiments were carried out in a water medium.

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