Regensburg 2022 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 10: Focus Session: Single Atom Catalysis 2

O 10.1: Topical Talk

Montag, 5. September 2022, 15:00–15:30, H4

Atomically-precise design of low-nuclearity catalysts — •Sharon Mitchell and Javier Pérez-Ramírez — ETH Zurich, Zurich, Switzerland

Nanostructured catalysts incorporating supported metal atoms or small clusters of defined size and chemical composition attract considerable attention because of their potential to maximize resource efficiency. When optimally assembled, all the metal nuclei can participate in the catalytic cycle with properties tailored to deliver high specific activity and stable performance. Over the past decade, the number and diversity of reported systems have exploded as researchers attempted to control the nanostructure with increasing atomic precision. Nonetheless, spatially resolving the architecture and properties of supported low-nuclearity catalysts using existing analytical methods remains challenging. This talk will discuss approaches to prepare and characterize catalytic materials integrating low-nuclearity metal species. Topical case studies will introduce recent achievements and challenges, including the synthesis of single-atom catalyst libraries with controlled density, the precision synthesis of low-nuclearity species, tools for metal speciation analysis in electron-beam-sensitive materials, and an automated image analysis approach for atom detection and classification.