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A Review on Particle Size Effect in Metal‐Catalyzed Heterogeneous Reactions
Author(s) -
Wang Hengwei,
Lu Junling
Publication year - 2020
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.202000205
Subject(s) - catalysis , particle size , chemistry , heterogeneous catalysis , metal , metal particle , chemical physics , nanoparticle , nanotechnology , cluster size , particle (ecology) , cluster (spacecraft) , electronic structure , computational chemistry , materials science , organic chemistry , computer science , programming language , oceanography , geology
Size of metal nanoparticles (NPs) plays decisive roles in metal‐catalyzed heterogeneous reactions, due to the drastic variation of the geometric and electronic properties of metal NPs with size. Along with the development of controlled catalyst synthesis, tremendous efforts have been devoted to understanding 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.