Figure 2

Particle size distribution of GQD (A), iron nanoparticles (B), Fe–Mn nanocomposites (C) and Fe–Mn nanocomposites doped GQD (D).

Particle size distribution of GQD (A), iron nanoparticles (B), Fe–Mn nanocomposites (C) and Fe–Mn nanocomposites doped GQD (D).