Cation vacancy activating surface neighboring sites for efficient CO2photoreduction on Bi4Ti3O12nanosheets

Cationic vacancy is proved to activate surface neighboring sites for promoting the CO 2 photoreduction of Bi 4 Ti 3 O 12 nanosheets, which renders a high CO evolution rate of 15.17 μmol g −1 h −1 , ∼5 times enhancement compared with the pristine Bi 4 Ti 3 O 12 .