Figure 6.

Comparison of the measured oxygen evolution employing equimolar Co amounts for RuCo₉ (blue) and Co₃O₄ (green). The experiments were performed in a KP_i (40 mM) buffer at pH 7 with [Ru(bpy)₃]²⁺ (1 mM) as photosensitizer and S₂${\text{O}}_8^{2-}$ (5 mM).