Atomic-scale detection of individual lead clusters confined in Linde Type A zeolites
Source abstract
Abstract
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.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nanocluster Synthesis and Applications · Catalytic Processes in Materials Science · Radioactive element chemistry and processing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Electron Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
NANOlab Center of Excellence, University of Antwerp, Belgium
Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
Applied Electrochemistry and Catalysis Group (ELCAT), University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
Centre for Membrane Separations, Adsorption, Catalysis, And Spectroscopy for Sustainable Solutions (cMACS), KU Leuven, Celestijnenlaan 200F, Box 2461, 3001, Leuven, Belgium
Funding
KU Leuven · Bijzonder Onderzoeksfonds · Vlaamse regering · Fonds Wetenschappelijk Onderzoek · H2020 European Research Council
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