Figure 3 | Scientific Reports

Figure 3

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

Figure 3

UV-vis absorption spectrum of CNDs. Photographs of as-prepared CNDs suspension under room light (inset, left) and upon irradiation with 365 nm UV light (inset, right). (B) Emission (em) spectra at progressively increasing excitation wavelengths from 300 nm to 460 nm and excitation (ex) spectrum of the CNDs suspensions. XPS spectra of the as-prepared CNDs: (C) Survey XPS spectrum; Narrow scan spectra of (D) C1s; (E) N1s; (F) S2p, respectively.

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