Morphology‐Dependent Catalysis of CeO 2 ‐Based Nanocrystal Model Catalysts

Comprehensive Summary Recent progress in colloidal synthesis has realized the preparations of uniform nanocrystal (NC) model catalysts with rich and well‐controlled morphologies that were employed to explore structure‐activity relationships of powder catalysts, similar to single‐crystal‐based model catalysts under ultrahigh vacuum conditions but can work at the same conditions as powder catalysts without the “materials gap” and “pressure gap”. In this perspective, the CeO 2 ‐based NC model catalysts with various morphologies are included and their relevant progresses are critically reviewed. The detailed descriptions of morphology‐controlled synthesis and characterizations of uniform CeO 2 NCs, and morphology‐dependent catalysis of CeO 2 ‐based NC model catalysts containing pure CeO 2 NCs, CeO 2 ‐supported oxide catalysts, and CeO 2 ‐supported metal catalysts, provide us a comprehensive cognition in CeO 2 ‐involved catalytic reactions and also open up a new approach for the fundamental studies of complex heterogeneous catalysis. Finally, a concept of oxide‐based NC model catalysts and outlook of oxide NCs acting not only as model catalysts for the fundamental study but also as the support in tailoring structures and optimizing performance of oxide‐involved catalysts are discussed.