Synergy of ferroelectric polarization and oxygen vacancy to promote CO photoreduction.

Solar-light driven CO reduction into value-added chemicals and fuels emerges as a significant approach for CO conversion. However, inefficient electron-hole separation and the complex multi-electrons transfer processes hamper the efficiency of CO photoreduction. Herein, we prepare ferroelectric BiTiNbO nanosheets and employ corona poling to strengthen their ferroelectric polarization to facilitate the bulk charge separation within BiTiNbO nanosheets.