TiO₂-CdS Nanocomposites: Effect of CdS Oxidation on the Photocatalytic Activity

Figure 5

XPS Cd 3d (a), S 2p (b), and Ti 2p (c) regions, from bottom to top, of CdS (Aldrich) and TiO₂-CdS with = 0.5, 0.2, 0.1, and 0.03 CdS.

(a)

(b)

(c)