Macroscopic Spontaneous Polarization and Surface Oxygen Vacancies Collaboratively Boosting CO 2 Photoreduction on BiOIO 3 Single Crystals

Abstract Prompt recombination of photogenerated electrons and holes in bulk and on the surface of photocatalysts harshly impedes the photocatalytic efficiency. However, the simultaneous manipulation of photocharges in the two locations is challenging. Herein, the synchronous promotion of bulk and surface separation of photoinduced charges for prominent CO 2 photoreduction by coupling macroscopic spontaneous polarization and surface oxygen vacancies (OVs) of BiOIO 3 single crystals is reported. The oriented growth of BiOIO 3 single‐crystal nanostrips along the [001] direction, ensuing substantial well‐aligned IO 3 polar units, renders a large enhancement for the macroscopic polarization electric field, which is…

• NN
  National Natural Science Foundation of China

  Awards: 51972288, 51672258
• FR
  Fundamental Research Funds for Central Universities of the Central South University

  Award: 2652018287