Research Article

Tuning the Photocatalytic Activity and Optical Properties of Mesoporous TiO2 Spheres by a Carbon Scaffold

Figure 4

Photoelectrochemical behavior. (a) Cyclic voltammetry and (b) on-off illumination cycles at a fixed bias potential of +0.5 V versus SCE of the hollow sphere titania electrode.
178512.fig.004a
(a)
178512.fig.004b
(b)