One-Step Synthesis of the Nitrogen and Sulfur Codoped Carbon Dots for Detection of Lead and Copper Ions in Aqueous Solution

<div>(a) The PL emission spectra and (b) the CIE chromaticity coordinates of NS-CDs under different excitation wavelengths (from 310 to 390 nm). (c) The emission spectra and (d) the corresponding PL intensity ratio (I/Io) for NS-CDs mixing with different heavy metal ions.</div>

Journal of Sensors

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Figure 2

Figure 2: One-Step Synthesis of the Nitrogen and Sulfur Codoped Carbon Dots for Detection of Lead and Copper Ions in Aqueous Solution 