Fig. 6From: Synthesis of Nitrogen and Sulfur Co-doped Carbon Dots from Garlic for Selective Detection of Fe3+ Photostability and ion detection for CDs. a Photostability of CDs under UV excitation at various time. b The metal stability of CDs in the presence of different metal ions with the concentration of 250 μM. c PL spectra of CDs with different Fe3+ concentrations (0 to 500 μM). d Plot of (F 0–F)/F with different Fe3+ concentrations (0 to 500 μM)Back to article page