Sustained solar hydrogen generation using a dye-sensitised NiO photocathode/BiVO4 tandem photo-electrochemical device

摘要

Solar hydrogen generation sustained for at least several hours is demonstrated using a dye-sensitised nickel(II) oxide photocathode and BiVO4 photoanode connected in a tandem configuration. H2 evolution rate is 120 nmol h−1 (\u3e80% faradaic efficiency) without electrical bias or sacrificial oxidant/reductant, at pH = 7 using visible light (\u3e420 nm).