Highly Fluorescent Nitrogen-Doped Graphene Quantum Dots’ Synthesis and Their Applications as Fe(III) Ions Sensor

Figure 6

(a) UV-Vis absorbance and florescence spectra of N-GQDs in aqueous solution (CA:EDA=1:3); (b) photoluminescence of N-GQDs at different excitation wavelengths.

(a)

(b)