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. 2018 Dec 12;6:601. doi: 10.3389/fchem.2018.00601

Figure 6.

Figure 6

Definition of a photocathode based on nanostructured NiO for the selective photoelectrochemical reduction of CO2 to CO. The photocathode is sensitized by a di-nuclear complex of Ru and Re having the dual function of absorbing visible light and transferring electrons to CO2. Reproduced with permission from Takeda and Ishitani (2010).