Fabrication of ZnS-Bi-TiO₂ Composites and Investigation of Their Sunlight Photocatalytic Performance

Figure 3

XPS spectra of (a) XPS survey spectra of samples, (b) XPS spectrum of Zn2p, (c) XPS spectrum of Ti2p, and (d) XPS spectrum of Bi4f.

(a)

(b)

(c)

(d)