A Review on Particle Size Effect in Metal-Catalyzed Heterogeneous Reactions

• 作者: Hengwei Wang Junling Lu
• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2020,（11）
• 所属期刊栏目: J&K Critical Review
• 页码范围: 1422-1444
• 页数: 23页
• 语种: 英文
• DOI: 10.1002/cjoc.202000205

摘要

Size of metal nanoparticles(NPs)plays decisive roles in metal-catalyzed heterogeneous reactions,due to the drastic variation of the geometric and elec-tronic properties of metal NPs with size.Along with the development of controlled catalyst synthesis,tremendous efforts have been devoted to under-standing the nature of the particle size effect.In particular,identification of the individual roles of size-dependent geometric and electronic effects on metal-catalyzed reactions is essential,but remains challenging since they are tightly hybridized together with particle size variation.In this review,we first discuss the fundamentals of the size-dependent geometric and electronic properties of metal NPs and their crucial roles in catalysis in general.Then we summarize the previous representative studies of the particle size effect,metal-by-metal,in heterogeneous catalysis.We highlighted the extension of particle size effect to ultrafine cluster and single-atom catalysts,the new frontiers in heterogeneous catalysis.In the followings,we further introduce the recent advances in disentangling the size-dependent geometric and electronic effects and unveiling their individual contributions to catalysis.Finally,we discuss the challenges and perspectives of investigations on the size effect in metal catalysis for the future studies.