Red-Light-Driven Hydrogen Production by TiO2-based PhotoanodeModified with Novel Ru Photosensitizer having Picolinatederivatives

摘要

Efficient solar water splitting has a potential to realize clean and sustainable energy societybecause it is one of the most ideal methodologies to produce hydrogen fuel from water andsunlight.In this regard,extensive studies on the development of molecular-basedphotoelectrochemical cells (PECs) for solar water splitting have been carried out.Wepreviously reported that polypyridyl ruthenium(II) dye having pyridine anchors (Ru) showedthe excellent adsorptivity to surface of TiO2 even in aqueous media.Moreover,Ru remains onTiO2 surface during photolysis using the PEC which is consisted TiO2 photoanode modifiedRu (FTO/TiO2/Ru) and Pt cathode.However,FTO/TiO2/Ru can absorb the visible light innarrow region,600 nm or less.