铅(地质)
原子单位
材料科学
类型(生物学)
比例(比率)
化学物理
纳米技术
化学
物理
地质学
地貌学
古生物学
量子力学
作者
Jarmo Fatermans,Giacomo Romolini,Thomas Altantzis,Johan Hofkens,Maarten B. J. Roeffaers,Sara Bals,Sandra Van Aert
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:14 (26): 9323-9330
被引量:2
摘要
Structural analysis of metal clusters confined in nanoporous materials is typically performed by X-ray-driven techniques. Although X-ray analysis has proved its strength in the characterization of metal clusters, it provides averaged structural information. Therefore, we here present an alternative workflow for bringing the characterization of confined metal clusters towards the local scale. This workflow is based on the combination of aberration-corrected transmission electron microscopy (TEM), TEM image simulations, and powder X-ray diffraction (XRD) with advanced statistical techniques. In this manner, we were able to characterize the clustering of Pb atoms in Linde Type A (LTA) zeolites with Pb loadings as low as 5 wt%. Moreover, individual Pb clusters could be directly detected. The proposed methodology thus enables a local-scale characterization of confined metal clusters in zeolites. This is important for further elucidation of the connection between the structure and the physicochemical properties of such systems.
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