Photocatalytic Activity under Simulated Sunlight of Bi-Modified TiO₂ Thin Films Obtained by Sol Gel

Figure 5

Gaussian deconvolution of the XPS spectra, Ti 2p region (a) 0 at. %, (b) 10.4 at. %, and (c) 25.4 at. % of bismuth.

(a)

(b)

(c)