Fig. 2From: Highly Selective Detection of Metronidazole by Self-Assembly via 0D/2D N–C QDs/g-C3N4 Nanocomposites Through FRET MechanismOptical characteristics of C QDs, N-C QDs, g-C3N4: N–C QDs composites (a Uv-vis properties of C QDs, N-C QDs. b The excite properties of composites. c The properties of QDs. d The optimal proportion of composites)Back to article page