Interface matters: Design of an efficient α-Ag2WO4/Ag3PO4 photocatalyst
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Otros documentos de la autoría: Barrios Trench, Aline; Alvarez Roca, Roman; Teodoro , Vinícius; da Trindade, Letícia; Machado, Thales Rafael; Teixeira, Mayara Mondego; De Souza, Daniele; Pinatti, Ivo M; Simões, Alexandre; Galvão Gobato, Yara; Andres, Juan; Longo, Elson
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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
Interface matters: Design of an efficient α-Ag2WO4/Ag3PO4 photocatalystAutoría
Fecha de publicación
2022-02-10Editor
ElsevierCita bibliográfica
TRENCH, Aline B., et al. Interface matters: Design of an efficient α-Ag2WO4/Ag3PO4 photocatalyst. Materials Chemistry and Physics, 2022, vol. 280, p. 125710.Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
Heterojunction engineering of complex metal oxides is an active area of research that addresses fundamental questions in solid-state systems with broad technological applications. In this work, α-Ag2WO4/Ag3PO4 heter ... [+]
Heterojunction engineering of complex metal oxides is an active area of research that addresses fundamental questions in solid-state systems with broad technological applications. In this work, α-Ag2WO4/Ag3PO4 heterojunctions with different amounts of α-Ag2WO4 (12, 24, and 36 wt%) were synthesized by the coprecipitation method and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, UV–vis diffuse reflectance spectroscopy, and photoluminescence. The α-Ag2WO4/Ag3PO4 heterojunction containing 24% wt of α-Ag2WO4 showed the most enhanced photocatalytic activity for the degradation of Rhodamine B, being much higher than Ag3PO4 and α-Ag2WO4. Trapping experiments revealed that the holes and superoxide radical, in minor extent, were the main active species in the photocatalytic degradation. Such enhanced photocatalytic performance was explained by the surface plasmon resonance effect associated with the presence of metallic Ag at the interface and the formation of a type I heterojunction between α-Ag2WO4 and Ag3PO4 semiconductors. [-]
Publicado en
Materials Chemistry and Physics, Vol. 280, March 2022Entidad financiadora
Fundaçao de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | Universitat Jaume I | Ministerio de Ciencia, Innovación y Universidades (Spain)
Código del proyecto o subvención
2013/07296-2 | 19/23488-5 | 2019/03722-3 | 2019/25944-8 | 2019/23488-5 | Finance Code 001 | 142035/2017-3 | UJI-B2019-30 | PGC2018094417-B-I00
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