693.932 PEOPLE
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Neagu, Dragos
University of St Andrews
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2024Squeezing Out Nanoparticles from Perovskites: Controlling Exsolution with Pressurecitations
- 2024Renewable syngas & hydrogen synthesis via steam reforming of glycerol over ceria-mediated exsolved metal nano catalystscitations
- 2023Renewable syngas & hydrogen synthesis via steam reforming of glycerol over ceria-mediated exsolved metal nano catalystscitations
- 2022Ni-doped A-site excess SrTiO3 thin films modified with Au nanoparticles by a thermodynamically-driven restructuring for plasmonic activitycitations
- 2022Ni-doped A-site excess SrTiO3 thin films modified with Au nanoparticles by a thermodynamically-driven restructuring for plasmonic activity ; ENEngelskEnglishNi-doped A-site excess SrTiO3 thin films modified with Au nanoparticles by a thermodynamically-driven restructuring for plasmonic activitycitations
- 2021Exsolution of catalytically active iridium nanoparticles from strontium titanatecitations
- 2021Stability and activity controls of Cu nanoparticles for high-performance solid oxide fuel cellscitations
- 2021Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisationcitations
- 2020Exsolution of catalytically active iridium nanoparticles from strontium titanatecitations
- 2020Endogenous nanoparticles strain perovskite host lattice providing oxygen capacity and driving oxygen exchange and CH4 conversion to syngascitations
- 2020Symmetrical Exsolution of Rh Nanoparticles in Solid Oxide Cells for Efficient Syngas Production from Greenhouse Gasescitations
- 2020Low temperature methane conversion with perovskite-supported exo/endo-particlescitations
- 2019In situ observation of nanoparticle exsolution from Perovskite oxides:from atomic scale mechanistic insight to nanostructure tailoringcitations
- 2019In situ observation of nanoparticle exsolution from perovskite oxidescitations
- 2019Towards efficient use of noble metalscitations
- 2018Sulfur-tolerant, exsolved Fe–Ni alloy nanoparticles for CO oxidationcitations
- 2018Spinel-based coatings for metal supported solid oxide fuel cellscitations
- 2017Demonstration of chemistry at a point through restructuring and catalytic activation at anchored nanoparticlescitations
- 2017Spinel-based coatings for metal supported solid oxide fuel cellscitations
- 2017Spinel-based coatings for metal supported solid oxide fuel cellscitations
- 2016Evidence and model for strain-driven release of metal nano-catalysts from perovskites during exsolutioncitations
- 2016Evolution of the electrochemical interface in high-temperature fuel cells and electrolyserscitations
- 2016Evolution of the electrochemical interface in high-temperature fuel cells and electrolyserscitations
- 2015Evidence and model for strain-driven release of metal nano-catalysts from perovskites during exsolutioncitations
- 2015Nano-socketed nickel particles with enhanced coking resistance grown in situ by redox exsolutioncitations
- 2014Calculation of a standard reformed biogas composition and testing on SOFC anode powderscitations
- 2013Step-change in high temperature steam electrolysis performance of perovskite oxide cathodes with exsolution of B-site dopantscitations
- 2013Calculation of a standard reformed biogas composition and testing on SOFC anode powderscitations
- 2013Perovskite Defect Chemistry as Exemplified by Strontium Titanatecitations
- 2013In situ growth of nanoparticles through control of non-stoichiometrycitations
- 2010Structure and Properties of La 0.4 Sr 0.4 TiO 3 Ceramics for Use as Anode Materials in Solid Oxide Fuel Cellscitations
- 2010Mecanism de creştere şi proprietǎţi ale filmelor subţiri de YBa2Cu3O7-αdepuse prin ablaţie laser PE (001) SrTiO3
- 2010Structure and properties of La0.4Sr0.4TiO3 Ceramics for use as anode materials in solid oxide fuel cellscitations
- 2010Synthesis of ceria-based ceramics by combustion technique
Places of action
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article
Evidence and model for strain-driven release of metal nano-catalysts from perovskites during exsolution
Abstract
The evolution of the surface morphology during exsolution of Ni from the perovskite, La 0.4 Sr 0.4 Ti 0.97 Ni 0.03 O 3-δ , under reducing conditions was determined using atomic force microscopy (AFM). The exsolution process was found to initially induce the formation of a 20-30 nm deep pit on the oxide surface followed by the emergence of a Ni particle at the bottom of the pit. Continued emergence of the particle results in it nearly filling the pit producing a unique structure in which the Ni particle is socketed into the oxide surface. We also show that this morphological evolution can be explained using a simple energy-based model that accounts for the interplay between the surface free energy and the strain energy induced by the included metal nucleate. The unique socketed structure results in strong anchorage between the exsolved particles and the oxide host lattice which imparts both high thermal stability and unique catalytic activity.