DataVXACS NanoPaper
journal article·2019-11-26

In Situ Observation of Nanoparticle Exsolution from Perovskite Oxides: From Atomic Scale Mechanistic Insight to Nanostructure Tailoring

Dragos Neagu, Vasileios Kyriakou, Ioan-Lucian Roiban, Mimoun Aouine, Chenyang Tang, Angel Caravaca, Kalliopi Kousi, Ingeborg Schreur-Piet, Ian S. Metcalfe, Philippe Vernoux, Mauritius C. M. van de Sanden, Mihalis N. Tsampas

ACS Nano· Volume 13· Issue 11
Publisher page
Source abstract

Abstract

Understanding and controlling the formation of nanoparticles at the surface of functional oxide supports is critical for tuning activity and stability for catalytic and energy conversion applications. Here, we use a latest generation environmental transmission electron microscope to follow the exsolution of individual nanoparticles at the surface of perovskite oxides, with ultrahigh spatial and temporal resolution. Qualitative and quantitative analysis of the data reveals the atomic scale processes that underpin the formation of the socketed, strain-inducing interface that confers exsolved particles their exceptional stability and reactivity. This insight also enabled us to discover that the shape of exsolved particles can be controlled by changing the atmosphere in which exsolution is carried out, and additionally, this could also produce intriguing heterostructures consisting of metal–metal oxide coupled nanoparticles. Our results not only provide insight into the in situ formation of nanoparticles but also demonstrate the tailoring of nanostructures and nanointerfaces.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materialsCatalysis & surfaces

OpenAlex topics: Electronic and Structural Properties of Oxides · Catalytic Processes in Materials Science · Electrocatalysts for Energy Conversion

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom

Dutch Institute for Fundamental Energy Research (DIFFER), 5612 AJ Eindhoven, The Netherlands

Univ Lyon, Insa-Lyon, Université Claude Bernard Lyon I, CNRS UMR 5510, Mateis, 7 av Jean Capelle, 69621 Villeurbanne Cedex, France

Univ. Lyon, Université Claude Bernard Lyon 1, CNRS - UMR 5256, IRCELYON, 2 avenue A. Einstein, 69626 Villeurbanne, France

Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands

Department of Applied Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands

Funding

Engineering and Physical Sciences Research Council · Syngaschem · FP7 Ideas: European Research Council · Technische Universiteit Eindhoven · Nederlandse Organisatie voor Wetenschappelijk Onderzoek · METSA network

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