fig9

Figure 9. PEC properties of WO₃/Mo-doped BiVO₄ photoanodes under visible light irradiation. (A) Photocurrent response under 454 nm irradiation and (B) IPCE action spectra in aqueous 0.1 M NaPi solution at 1.2 V vs. RHE. (C) Photocurrent in the vapor-fed PEC water splitting using WO₃/Mo-BiVO₄ photoanode at an applied voltage of 1.2 V (light source: blue LED, wavelength: 454 nm, and irradiance: 6.5 mW cm^-2). Schematics of (D) the vapor-fed PEC system under visible light irradiation and (E) PEC water splitting with applied voltage, depicted as ΔE. Figures (A-D) were reproduced with permission from ref.^[28], Copyright 2020, American Chemical Society.