Tightly adhered Ta3N5 nanotube arrays as a photoanode for solar water splitting

摘要

H2 generation via solar water splitting is considered to be one of the most promissing solutions to the energy crises, which takes the advantages of the inexhaustibility, universality and environmental benignancy of solar energy. Among different semicondutor photocatalysts, Ta3N5 is thought to be an outstanding candidate, which can untilze visible-light and realize unassisted soalr water splitting owning to its proper band gap energy (～ 2.1 eV) and band structure. The theoretical photoconversion efficiency of Ta3N5 is as high as 15.9% under AM1.5 irradiation.