In Situ Growth of Bi Nanoparticles on NaBiO3, delta-, and beta-Bi2O3 Surfaces: Electron Irradiation and Theoretical Insights
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Otros documentos de la autoría: Assis, Marcelo de; Carvalho de Oliveira, Marisa; Machado, Thales Rafael; Guerra Macedo, Nadia; Costa, João Paulo C.; Gracia, Lourdes; Andres, Juan; Longo, Elson
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
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Título
In Situ Growth of Bi Nanoparticles on NaBiO3, delta-, and beta-Bi2O3 Surfaces: Electron Irradiation and Theoretical InsightsAutoría
Fecha de publicación
2019-02-04Editor
American Chemical SocietyCita bibliográfica
In Situ Growth of Bi Nanoparticles on NaBiO3, δ-, and β-Bi2O3 Surfaces: Electron Irradiation and Theoretical Insights Marcelo Assis, Marisa Carvalho de Oliveira, Thales Rafael Machado, Nadia Guerra Macedo, João Paulo Campos Costa, Lourdes Gracia, Juan Andrés, and Elson Longo The Journal of Physical Chemistry C 2019 123 (8), 5023-5030 DOI: 10.1021/acs.jpcc.8b11566Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.acs.org/doi/abs/10.1021/acs.jpcc.8b11566Versión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
Herein, we present a combined experimental and theoretical study of the in situ growth of Bi nanoparticles on NaBiO3, δ-, and β-Bi2O3 surfaces mediated by the electron beam of a high-resolution transmission electron ... [+]
Herein, we present a combined experimental and theoretical study of the in situ growth of Bi nanoparticles on NaBiO3, δ-, and β-Bi2O3 surfaces mediated by the electron beam of a high-resolution transmission electron microscope. Density functional theory and quantum theory of atoms in molecule calculations were used to gain a deeper insight into the experimental observations and to provide an atomistic basis for understanding the formation mechanism of Bi NPs on NaBiO3, δ-, and β-Bi2O3 under electron beam irradiation. Analysis of the experimental data and electron density distributions suggests that the formation of Bi NPs can be related to the structural and electronic changes occurring within the octahedral [BiO6] clusters, and to a lesser extent, [NaO6] clusters, which serve as the constituent building blocks of NaBiO3. Our findings indicate that as a function of the number of added electrons, the formation of β-Bi2O3 takes place first followed by the subsequent appearance of metallic Bi NPs generated in the crystal by electron beam irradiation. [-]
Proyecto de investigación
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brazil (CAPES) (Finance code 001 – PNPD program) ; FAPESP (2013/07296-2, 2013/26671-9) ; CNPq (166281/2017-4) ; Generalitat Valenciana (PrometeoII/2014/022, ACOMP/2015/1202) ; Ministerio de Economia y Competitividad (project CTQ2015-65207-P) ; Universitat Jaume I (project No. UJI-B2016-25)Derechos de acceso
Copyright © 2019 American Chemical Society
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