- -

Squeezing Out Nanoparticles from Perovskites: Controlling Exsolution with Pressure

RiuNet: Repositorio Institucional de la Universidad Politécnica de Valencia

Compartir/Enviar a

Citas

Estadísticas

  • Estadisticas de Uso

Squeezing Out Nanoparticles from Perovskites: Controlling Exsolution with Pressure

Mostrar el registro sencillo del ítem

Ficheros en el ítem

dc.contributor.author López-García, Andrés es_ES
dc.contributor.author Remiro-Buenamañana, Sonia es_ES
dc.contributor.author Neagu, Dragos es_ES
dc.contributor.author Carrillo-Del Teso, Alfonso Juan es_ES
dc.contributor.author Serra Alfaro, José Manuel es_ES
dc.date.accessioned 2024-11-06T19:19:35Z
dc.date.available 2024-11-06T19:19:35Z
dc.date.issued 2024-08 es_ES
dc.identifier.issn 1613-6810 es_ES
dc.identifier.uri http://hdl.handle.net/10251/211454
dc.description.abstract [EN] Nanoparticle exsolution has emerged as a versatile method to functionalize oxides with robust metallic nanoparticles for catalytic and energy applications. By modifying certain external parameters during thermal reduction (temperature, time, reducing gas), some morphological and/or compositional properties of the exsolved nanoparticles can be tuned. Here, it is shown how the application of high pressure (<100 bar H2) enables the control of the exsolution of ternary FeCoNi alloyed nanoparticles from a double perovskite. H2 pressure affects the lattice expansion and the nanoparticle characteristics (size, population, and composition). The composition of the alloyed nanoparticles could be controlled, showing a reversal of the expected thermodynamic trend at 10 and 50 bar, where Fe becomes the main component instead of Ni. In addition, pressure drastically lowers the exsolution temperature to 300 degrees C, resulting in unprecedented highly-dispersed and small-sized nanoparticles with a similar composition to those obtained at 600 degrees C and 10 bar. The mechanisms behind the effects of pressure on exsolution are discussed, involving kinetic, surface thermodynamics, and lattice-strain factors. A volcano-like trend of the exsolution extent suggests that competing pressure-dependent mechanisms govern the process. Pressure emerges as a new design tool for metallic nanoparticle exsolution enabling novel nanocatalysts and surface-functionalized materials. es_ES
dc.description.sponsorship The project that gave rise to these results received the support of a fellowship from the "la Caixa" Foundation (ID 100010434). The fellowship code is LCF/BQ/PI20/11760015. Financial support by the Spanish Ministry of Science and Innovation (PID2022-139663OB-I00 and CEX2021-001230-S grant funded by MCIN/AEI/10.13039/501100011033) and by Generalitat Valenciana (CIPROM/2022/10) is gratefully acknowledged. The authors thank the support of the Electronic Microscopy Service of the Universitat Politecnica de Valencia. es_ES
dc.language Inglés es_ES
dc.publisher John Wiley & Sons es_ES
dc.relation.ispartof Small es_ES
dc.rights Reconocimiento - No comercial (by-nc) es_ES
dc.subject Double perovskites es_ES
dc.subject Exsolution es_ES
dc.subject Metallic nanoparticles es_ES
dc.subject Pressure es_ES
dc.subject Ternary alloys es_ES
dc.title Squeezing Out Nanoparticles from Perovskites: Controlling Exsolution with Pressure es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1002/smll.202403544 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-139663OB-I00/ES/DESCARBONIZACION DE LA INDUSTRIA DE PROCESOS MEDIANTE LA CATALISIS INTENSIFICADA POR INTEGRACION DE TECNOLOGIAS FACILITADORAS ESENCIALES/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//CIPROM%2F2022%2F10/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/Fundació Bancària Caixa d'Estalvis i Pensions de Barcelona//100010434/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/Fundació Bancària Caixa d'Estalvis i Pensions de Barcelona//LCF%2FBQ%2FPI20%2F11760015/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/AEI//CEX2021-001230-S/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.description.bibliographicCitation López-García, A.; Remiro-Buenamañana, S.; Neagu, D.; Carrillo-Del Teso, AJ.; Serra Alfaro, JM. (2024). Squeezing Out Nanoparticles from Perovskites: Controlling Exsolution with Pressure. Small. https://doi.org/10.1002/smll.202403544 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1002/smll.202403544 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.identifier.pmid 39180444 es_ES
dc.relation.pasarela S\527113 es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Agencia Estatal de Investigación es_ES
dc.contributor.funder Fundació Bancària Caixa d'Estalvis i Pensions de Barcelona es_ES


Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem