Figure 6.

UV/vis DRS spectra of samples synthesized (a) at different temperatures and (b) for different durations at 200 °C. The insets of (a) and (b) show the plots of the (F(R)hv)2 versus photon energy (hv) for the photocatalyst.

UV/vis DRS spectra of samples synthesized (a) at different temperatures and (b) for different durations at 200 °C. The insets of (a) and (b) show the plots of the (F(R)hv)2 versus photon energy (hv) for the photocatalyst.