Figure 4
Photochemical performances of four typical photoelectrodes. Black line: BiVO4; red line: MnOx (P.D.)/BiVO4; blue line: MnOx (imp)/BiVO4; green line: IrO2 (P.D.)/BiVO4. P.D., photo-deposition, imp, impregnation. The MnOx nanoparticles on the MnOx (P.D.)/BiVO4 are selectively deposited on the {110} facets, the MnOx particles on the MnOx (imp)/BiVO4 photoelectrodes are randomly dispersed on both {110} and {010} facets, and the IrO2 nanoparticles on the IrO2 (P.D.)/BiVO4 electrode was deposited selectively on the {010} facets. The contents of the deposited cocatalysts are all 0.1 wt %. Reaction conditions: 0.5 M Na2SO4 aqueous solution (pH=6.8). Light source, 300 W Xe lamp (λ≥420 nm), Scan rate: 10 mV s−1.
