Facet-engineering and interface design can optimize physicochemical properties of micro/nanomaterials at atomic level making them promising applications in a variety of fields such as catalysis, gas sorption/separation and sensing, especially in photocatalysis. In this review, we summarize the recent progress of photocatalytic reactions including water splitting, carbon dioxide (CO₂) reduction, degradation and so on from the aspect of facet-engineering. The influences of low-index facets, high-index facets and mixed facets with surface heterojunction on the photocatalytic performance are highlighted, and the challenges and opportunities of the facet-engineering for photocatalysis are discussed. It is expected that this review can provide guidance for future development of facet-engineering for efficiently photocatalytic applications.

晶面工程和界面设计可以在原子水平上优化微/纳米材料的物理化学性质，使其在催化、气体吸附/分离和传感等多个领域具有广阔的应用前景，尤其是在光催化领域。在这篇综述中，我们总结了光催化反应的最新进展，包括水分解、二氧化碳（CO ₂) 从 facet-engineering 方面减少、退化等。重点介绍了低指数晶面、高指数晶面和具有表面异质结的混合晶面对光催化性能的影响，并讨论了晶面工程对光催化的挑战和机遇。预计这篇综述可以为高效光催化应用的平面工程的未来发展提供指导。