Fig. 3. An action spectrum of water splitting over Rh0.5Cr1.5O3(0.2 wt%)/AgTaO3 and a diffuse reflectance spectrum of AgTaO3 prepared by a solid state reaction at 1273 K for 15 h without excess Ag. Rh0.5Cr1.5O3 was loaded by an impregnation method at 623 K for 1 h. Photocatalyst: 0.3 g, reactant solution: distilled water (120 mL), cell: top-irradiation cell with a Pyrex window, light source: 300 W Xe-arc lamp with band-pass filters.
