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

Figure 12

(a) Schematic view of the experimental setup for the determination of quasi-Fermi level for electrons using the method of Roy. A 60 mL solution of KNO₃ (0.1 M) with a small amount of MV²⁺ is bubbled through with nitrogen in order to avoid the reoxidation of MV^+• by dissolved oxygen. (b) Structure of MV²⁺. (c) Determination of the value of pH₀ from a typical potential versus pH curve.

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