(Photo)electrochemical Methods for the Determination of the Band Edge Positions of TiO₂-Based Nanomaterials

Figure 9

Dependence of the open-circuit potential (𝐸_OC) on illumination intensity measured in (a) HCl (0.1 M; pH = 1.1), (b) NaCl (0.1 M; pH = 6.9), and (c) NaOH (0.1 M; pH = 12.3). (d) pH dependence of flatband potential (𝐸_FB). The electrolyte was degassed by intense bubbling with nitrogen.

(a)

(b)

(c)

(d)