Hydrothermal Synthesis of rGO/PbTiO₃ Photocatalyst and Its Photocatalytic H₂ Evolution Activity

Figure 7

(a) XPS spectra of O 1s PGO0 (below) and PGO060 (above). (b) XPS spectra of Ti 2p PGO060 (below) and PGO060 (above). (c) The comparison of O 1s levels in PbTiO₃ (below) and PGO060 (above). (d) The valence band (VB) spectra of the PGO060 and PGO060. The valence band maximum (VBM) value was determined by linear extrapolation of the leading edge to the baseline.

(a)

(b)

(c)

(d)