Photoelectrochemical cells with a pyridine-anchored organic dye photoanode for efficient H2 generation by water reduction

Abstract

TiO₂ photoelectrodes modified with organic dyes with pyridine anchoring groups are prepared, which are used as photoanodes of dye-sensitized photoelectrochemical cells for efficient water reduction with high photocurrent density and stability in aqueous solutions. Vigorous H₂ generation with a production rate of around 250 μmol h⁻¹ is realized with a photoanode of an active area of 5 × 5 cm².