Research Article
Hydrothermal Synthesis of rGO/PbTiO3 Photocatalyst and Its Photocatalytic H2 Evolution Activity
Figure 6
Nyquist plots measured at 1.23 V (vs. RHE) in 0.5 M Na2SO4 solution. Several samples were irradiated with simulated sunlight from the back side of FTO. The frequency is in the range from 0.1 MHz to 0.01 Hz. The inset is the equivalent circuit model: (a) PGO0, (b) PGO015, (c) PGO030, (d) PGO060, and (e) PGO120.