Figure 4
(a) XPS spectrum of pure ZnO-H, and ZnO/CuO-H (5 mM) structures. (b–d) High-resolution spectrum of Zn, O, and Cu peaks, respectively.
Figure 4 | Scientific Reports
(a) XPS spectrum of pure ZnO-H, and ZnO/CuO-H (5 mM) structures. (b–d) High-resolution spectrum of Zn, O, and Cu peaks, respectively.
