Catechol–TiO2 hybrids for photocatalytic H2 production and photocathode assembly

Abstract

Visible-light driven H₂ evolution in water is achieved using catechol-photosensitised TiO₂ nanoparticles with a molecular nickel catalyst. Layer-by-layer immobilisation of catechol–TiO₂ onto tin-doped indium oxide electrodes generates photocathodic currents in the presence of an electron acceptor. This approach represents a new strategy for controlling photocurrent direction in dye-sensitised photoelectrochemical applications.