Exsolution on perovskite oxides: morphology and anchorage of nanoparticles
Perovskites are very promising materials for a wide range of applications (such as catalysis, solid oxide fuel cells...) due to beneficial general properties ( e.g. stability at high temperatures) and tunability - doping both A- and B-site cations opens the path to a materials design approach that a...
Saved in:
Published in | Chemical communications (Cambridge, England) Vol. 59; no. 27; pp. 3948 - 3956 |
---|---|
Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
England
Royal Society of Chemistry
30.03.2023
The Royal Society of Chemistry |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Perovskites are very promising materials for a wide range of applications (such as catalysis, solid oxide fuel cells...) due to beneficial general properties (
e.g.
stability at high temperatures) and tunability - doping both A- and B-site cations opens the path to a materials design approach that allows specific properties to be finely tuned towards applications. A major asset of perovskites is the ability to form nanoparticles on the surface under certain conditions in a process called "exsolution". Exsolution leads to the decoration of the material's surface with finely dispersed nanoparticles (which can be metallic or oxidic - depending on the experimental conditions) made from B-site cations of the perovskite lattice (here, doping comes into play, as B-site doping allows control over the constitution of the nanoparticles). In fact, the ability to undergo exsolution is one of the main reasons that perovskites are currently a hot topic of intensive research in catalysis and related fields. Exsolution on perovskites has been heavily researched in the last couple of years: various potential catalysts have been tested with different reactions, the oxide backbone materials and the exsolved nanoparticles have been investigated with a multitude of different methods, and the effect of different exsolution parameters on the resulting nanoparticles has been studied. Despite all this, to our knowledge no comprehensive effort was made so far to evaluate these studies with respect to the effect that the exsolution conditions have on anchorage and morphology of the nanoparticles. Therefore, this highlight aims to provide an overview of nanoparticles exsolved from oxide-based perovskites with a focus on the conditions leading to nanoparticle exsolution.
In this work, we summarize the current state of research regarding the morphology of exsolved nanoparticles on perovskite oxides. |
---|---|
Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-3 content type line 23 ObjectType-Review-1 These authors contributed equally. Shared first authors. |
ISSN: | 1359-7345 1364-548X |
DOI: | 10.1039/d3cc00456b |