High-Efficiently Photoelectrochemical Hydrogen Production over Zn-Incorporated TiO₂ Nanotubes

Figure 8

CV of TNT and Zn-TNT (a) and an expected potential energy diagram based on UV-visible spectra and CV (b): (A) TNT, (B) 0.001 mol% Zn-TNT, (C) 0.01 mol% Zn-TNT, and (D) 0.1 mol% Zn-TNT.

(a)

(b)