Fig. 14
(a) SEM micrograph (mapping area), (b) EDX spectrum and elemental mapping for (c) carbon, (d) oxygen, (e) potassium, and (f) calcium in the N-CDs at 210 °C for 4 h at a magnification of × 23,000.
Fig. 14 | Scientific Reports
(a) SEM micrograph (mapping area), (b) EDX spectrum and elemental mapping for (c) carbon, (d) oxygen, (e) potassium, and (f) calcium in the N-CDs at 210 °C for 4 h at a magnification of × 23,000.
