Nanoparticle Exsolution on Perovskite Oxides:Insights into Mechanism,Characteristics and Novel Strategies  

作　　者：Yo Han Kim Hyeongwon Jeong Bo‑Ram Won Hyejin Jeon Chan‑ho Park Dayoung Park Yeeun Kim Somi Lee Jae‑ha Myung 

机构地区：[1]Department of Materials Science and Engineering,Incheon National University,Incheon 22012,Republic of Korea

出　　处：《Nano-Micro Letters》2024年第2期312-346,共35页纳微快报（英文版）

基　　金：This study was supported by the National Research Foundation of Korea(NRF-2021R1C1C1010233);funded by the Korean government(MSIT);This research was also supported by the Korea Institute of Energy Technology Evaluation and Planning(KETEP)Grant(No.G032542411);funded by the Korea Ministry of Trade,Industry,and Energy(MOTIE).

摘　　要：Supported nanoparticles have attracted considerable attention as a promising catalyst for achieving unique properties in numerous applications,including fuel cells,chemical conversion,and batteries.Nanocatalysts demonstrate high activity by expanding the number of active sites,but they also intensify deactivation issues,such as agglomeration and poisoning,simultaneously.Exsolution for bottomup synthesis of supported nanoparticles has emerged as a breakthrough technique to overcome limitations associated with conventional nanomaterials.Nanoparticles are uniformly exsolved from perovskite oxide supports and socketed into the oxide support by a one-step reduction process.Their uniformity and stability,resulting from the socketed structure,play a crucial role in the development of novel nanocatalysts.Recently,tremendous research efforts have been dedicated to further controlling exsolution particles.To effectively address exsolution at a more precise level,understanding the underlying mechanism is essential.This review presents a comprehensive overview of the exsolution mechanism,with a focus on its driving force,processes,properties,and synergetic strategies,as well as new pathways for optimizing nanocatalysts in diverse applications.

关 键 词：Supported nanoparticle EXSOLUTION In situ growth MECHANISM Perovskite oxide CATALYST 

分 类 号：O643.36[理学—物理化学] TB383.1[理学—化学]