Regulating the surface of anion-doped TiO₂ nanorods by hydrogen annealing for superior photoelectrochemical water oxidation.

ABSTRACT: Dedications to achieve the highly efficient metal oxide semiconductor for the photoelectrochemical water splitting system have been persisted to utilize the TiO₂ as the promising photoanode material. Herein, we report notable progress for nanostructured TiO₂ photoanodes using facile sequential one-pot hydrothermal synthesis and annealing in hydrogen. A photocurrent density of 3.04 mA·cm^-2 at 1.23 V vs. reversible hydrogen electrode was achieved in TiO₂ nanorod arrays annealed in hydrogen ambient, which is approximately 4.25 times higher than that of pristine TiO₂ annealed in ambient air. 79.2% of incident photon-to-current efficiency at 380 nm wavelength demonstrates the prominence of the material at the near-UV spectral range region a

SUBMITTER: Park J 

PROVIDER: S-EPMC9296745 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature