786759.fig.007a
(a)
786759.fig.007b
(b)
786759.fig.007c
(c)
Figure 7: Schematic representation of the mechanism of photocurrent generation at a compact (a) and nanocrystalline (b) TiO2 electrode. (c) Photovoltammogram under interrupted illumination for a compact TiO2 electrode (dense anodic layer) recorded in LiClO4 (0.1 M; pH 6) electrolyte in the cathodic direction with the sweep rate of 2 mV/s. The incident light wavelength was 350 nm.