Visible light-driven water oxidation using a covalently-linked molecular catalyst-sensitizer dyad assembled on a TiO₂ electrode.

ABSTRACT: The combination of porphyrin as a sensitizer and a ruthenium complex as a water oxidation catalyst (WOC) is promising to exploit highly efficient molecular artificial photosynthetic systems. A covalently-linked ruthenium-based WOC-zinc porphyrin (ZnP) sensitizer dyad was assembled on a TiO₂ electrode for visible-light driven water oxidation. The water oxidation activity was found to be improved in comparison to the reference systems with the simple combination of the individual WOC and ZnP as well as with ZnP solely, demonstrating the advantage of the covalent linking approach over the non-covalent one. More importantly, via vectorial multi-step electron transfer triggered by visible light, the dye-sensitized photoelectrochemical cell (DSPEC) achieved a broader PEC respon

SUBMITTER: Yamamoto M 

PROVIDER: S-EPMC5975926 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature