Gradient tungsten-doped Bi₃TiNbO₉ ferroelectric photocatalysts with additional built-in electric field for efficient overall water splitting.

ABSTRACT: Bi₃TiNbO₉, a layered ferroelectric photocatalyst, exhibits great potential for overall water splitting through efficient intralayer separation of photogenerated carriers motivated by a depolarization field along the in-plane a-axis. However, the poor interlayer transport of carriers along the out-of-plane c-axis, caused by the significant potential barrier between layers, leads to a high probability of carrier recombination and consequently results in low photocatalytic activity. Here, we have developed an efficient photocatalyst consisting of Bi₃TiNbO₉ nanosheets with a gradient tungsten (W) doping along the c-axis. This results in the generation of an additional electric field along the c-axis and simultaneously enhances the magnitude of depola

SUBMITTER: Huang J 

PROVIDER: S-EPMC10692145 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature