Kohei Takijiri

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The onset potential for H2 production from neutral water (pH 7) catalyzed by a platinum(ii) porphyrin (PtP-py) modified TiO2 electrode positions very close to the standard water reduction potential (less than 50 mV). H2 production is driven by the conduction band edge potential of TiO2 at the PtP-py-modified TiO2 cathode.
A polypyridyl ruthenium sensitizer possessing pyridyl anchors (Ru-py) forms much stronger chemical linkages to TiO2 surfaces compared to the conventional carboxylate and phosphonate ones. A highly stable dye-sensitized photoelectrochemical cell for water reduction is successfully demonstrated using this technique.
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