Fig. 5

(a) FTIR spectra for NiO, Mn3O4, and NiO–Mn3O4 nanocomposite, (b) UV–Vis DRS and (c) Tauc plot of samples, (d) Photoluminescence spectra of NiO, Mn3O4, and NiO–Mn3O4 nanocomposite.

(a) FTIR spectra for NiO, Mn3O4, and NiO–Mn3O4 nanocomposite, (b) UV–Vis DRS and (c) Tauc plot of samples, (d) Photoluminescence spectra of NiO, Mn3O4, and NiO–Mn3O4 nanocomposite.