Using In situ Transmission Electron Microscopy to Study Strong Metal‐Support Interactions in Heterogeneous Catalysis

• Published in: Angewandte Chemie Vol. 136; no. 42
• Main Authors: Dai, Jie, Sun, Yifei, Liu, Zhewei, Zhang, Yiyuan, Duan, Sibin, Wang, Rongming
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 14.10.2024
• Subjects: Catalysis; Catalysts; Catalytic activity; Chemical activity; Chemical reactions; Design optimization; dynamic characterization; Dynamic structural analysis; heterogeneous catalysis; in situ TEM; Metals; Nanoparticles; strong metal-support interaction; Structural design; Structural engineering; Transmission electron microscopy
• ISSN: 0044-8249; 1521-3757
• DOI: 10.1002/ange.202409673

Precisely controlling the microstructure of supported metal catalysts and regulating metal‐support interactions at the atomic level are essential for achieving highly efficient heterogeneous catalysts. Strong metal‐support interaction (SMSI) not only stabilizes metal nanoparticles and improves their resistance to sintering but also modulates the electrical interaction between metal species and the support, optimizing the catalytic activity and selectivity. Therefore, understating the formation mechanism of SMSI and its dynamic evolution during the chemical reaction at the atomic scale is crucial for guiding the structural design and performance optimization of supported metal catalysts. Recent advancements in in situ transmission electron microscopy (TEM) have shed new light on these complex phenomena, providing deeper insights into the SMSI dynamics. Here, the research progress of in situ TEM investigation on SMSI in heterogeneous catalysis is systematically reviewed, focusing on the formation dynamics, structural evolution during the catalytic reactions, and regulation methods of SMSI. The significant advantages of in situ TEM technologies for SMSI research are also highlighted. Moreover, the challenges and probable development paths of in situ TEM studies on the SMSI are also provided. Strong metal‐support interaction (SMSI) is currently a prominent subject of study in the field of heterogeneous catalysis. Comprehending the atomic‐scale dynamics of SMSI is crucial for directing the design and optimization of heterogeneous catalysts. This article reviews the latest advancements in in situ transmission electron microscopy (TEM) research on SMSI. It also offers a concise overview of the obstacles and potential solutions for future progress in this emerging domain.