In order to assess the dynamics of photogenerated charge carriers, transient photocurrent measurements of pristine BiVO4, Mo-BiVO4 and Mo-BiVO4/CoPOM photoanodes were carried out at a moderate bias potential of +0.74 V vs. RHE under chopped AM 1.5G (1 sun) illumination (Fig. ). On the timescale of this experiment (~minutes), the photocurrent response indicates an excellent short-term stability.