Fig. 15

(a) XRD pattern, (b) FESEM image, (c) UV–Visible absorption spectra, and (d) Tauc’s plot for bandgap estimation of the fresh and 5th recycled NATP/GCN photocatalyst (Insert of (a): photographic image of the fresh and recycled photocatalyst).

(a) XRD pattern, (b) FESEM image, (c) UV–Visible absorption spectra, and (d) Tauc’s plot for bandgap estimation of the fresh and 5th recycled NATP/GCN photocatalyst (Insert of (a): photographic image of the fresh and recycled photocatalyst).