Figure 6 | Scientific Reports

Figure 6

From: Enhanced-quantum yield sulfur/nitrogen co-doped fluorescent carbon nanodots produced from biomass Enteromorpha prolifera: synthesis, posttreatment, applications and mechanism study

Figure 6

(A) Remained percentage of the CNDs PL intensity upon addition of different metal ions all at 250 µM in acidic conditions (pH = 6.0). (B) PL intensity of the CNDs in the presence of Fe3+ ions at different concentrations from 0 to 1700 µM. (C) Plot of PL intensity of CNDs against the Fe3+ concentrations. (D) Detection of Fe3+ ion in tap water using a standard addition method. Excitation at 370 nm was applied. Error bars indicate standard deviations of the means (n = 3).

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