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Selected Article
Understanding the oxidation of metal nanoparticles is crucial for various applications, especially in heterogeneous catalysis, such as catalytic oxidation reactions, where metal nanoparticles are typically dispersed on a support. However, the interaction dynamics between nanoparticles and oxygen, particularly under the influence of support materials, remain poorly understood, significantly hindering accurate comprehension and control of nanoparticle oxidation kinetics.Here, we use aberration-corrected environmental (scanning) transmission electron microscopy (E(S)TEM) to elucidate two distinct oxidation kinetics in supported nanoparticles: preferential adaptive oxidation initiated at the nanoparticle-support interface, where the support promotes oxidation, and surface oxidation, where the support inhibits oxidation.Our system calculations have been confirmed by experimental verification, indicating that interfacial epitaxial matching plays a dominant role in determining the oxidation kinetics in oxygen. It is a key indicator for developing simple interface engineering strategies to regulate adaptive and surface oxidation processes.This work highlights the diversity of oxidation behavior determined by the interface and provides a strategy to regulate the oxidation kinetics of supported nanoparticles under the same conditions.
Original link
Interface engineering to regulate oxidation dynamics of supported nanoparticles
Nature Communications ( IF 15.7 )
Pub Date : 2025-05-24
DOI: 10.1038/s41467-025-60151-3
Shiyuan Chen, Kai Zhang, Yuhui Chen, Bo Shao, Chaobin Zeng, Wentao Yuan, Hangsheng Yang, Zhong-Kang Han, Ying Jiang, Ze Zhang, Yong Wang
