αsingle bondAg2WO4 under microwave, electron beam and femtosecond laser irradiations: Unveiling the relationship between morphology and photoluminescence emissions
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Otros documentos de la autoría: Teixeira, Mayara Mondego; Santos, Lílian Cruz; Mora Tello, Ana Cristina; Almeida, Priscila Barros; Soares da Silva, Jussara; Laier, Letícia; Gracia, Lourdes; Daldin Teodoro, Marcio; da Silva, Luís Fernando; 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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INVESTIGACIONMetadatos
Título
αsingle bondAg2WO4 under microwave, electron beam and femtosecond laser irradiations: Unveiling the relationship between morphology and photoluminescence emissionsAutoría
Fecha de publicación
2022-01-29Editor
ElsevierISSN
0925-8388Cita bibliográfica
TEIXEIRA, Mayara Mondego, et al. αAg2WO4 under microwave, electron beam and femtosecond laser irradiations: Unveiling the relationship between morphology and photoluminescence emissions. Journal of Alloys and Compounds, 2022, p. 163840.Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
In this study, the α-Ag2WO4 samples were successfully synthesized combined two methods, co-precipitation and microwave-assisted hydrothermal. Later, two different irradiation processes: electron beam and femtosecond ... [+]
In this study, the α-Ag2WO4 samples were successfully synthesized combined two methods, co-precipitation and microwave-assisted hydrothermal. Later, two different irradiation processes: electron beam and femtosecond laser are applied. Unit cell changes were shown by X-ray measurements and Rietveld analysis and compared with the results obtained for first-principle calculations. The formation of oxygen vacancies on the surface of the particles after the irradiation process was revealed by XPS measurements. Electron beam and femtosecond laser irradiations were found to cause expansion of the unit cell, form oxygen vacancies on the surface, change the angle and distance between Osingle bondAg and Osingle bondW bonds, and modify the particle morphology to rod-, cube- and sphere-like. The XANES measurements confirm that the local order of the W atoms is maintained along the different irradiation processes. Based on the theoretical analysis of surfaces investigation and Wulff construction, the contribution of (010) and (101) surfaces at the emission centers in 550 and 733 nm associated with the PL spectrum of α–Ag2WO4, was established. [-]
Publicado en
Journal of Alloys and Compounds. Volume 903, 15 May 2022, 163840.Datos relacionados
https://ars.els-cdn.com/content/image/1-s2.0-S0925838822002316-mmc1.docxEntidad financiadora
Brazilian research financing institution | Conselho Nacional de Desenvolvimento Científico e Tecnológico - (CNPq) Brazil | Fundação de Amparo à Pesquisa do Estado de São Paulo - (FAPESP) Brazil | Universitat Jaume I | Ministerio de Ciencia, Innovación y Universidades (Spain) | LNLS
Código del proyecto o subvención
001 | CDMF, Proc.2013/07296–2 | UJI-B2019-30 | GC2018- 094417-B-I00 | XAFS2–20180338
Derechos de acceso
0925-8388/© 2022 Elsevier B.V. All rights reserved.
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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