Structure, Photoluminescence Emissions, and Photocatalytic Activity of Ag2SeO3: A Joint Experimental and Theoretical Investigation
Impacto
Scholar |
Otros documentos de la autoría: Pinatti, Ivo M; Barrios Trench, Aline; Mora Tello, Ana Cristina; Pereira, Paula; Souza, Josiane C.; Teodoro, Marcio D.; Rosa, Ieda; Andres, Juan; Longo, Elson; Simoes, Alexandre Z.
Metadatos
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INVESTIGACIONMetadatos
Título
Structure, Photoluminescence Emissions, and Photocatalytic Activity of Ag2SeO3: A Joint Experimental and Theoretical InvestigationAutoría
Fecha de publicación
2021-04-19Editor
American Chemical SocietyISSN
0020-1669Cita bibliográfica
PINATTI, Ivo M., et al. Structure, Photoluminescence Emissions, and Photocatalytic Activity of Ag2SeO3: A Joint Experimental and Theoretical Investigation. Inorganic Chemistry, 2021, 60.8: 5937-5954Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
In this paper, we report the synthesis of silver
selenite (Ag2SeO3) by different methods [sonochemistry, ultrasonic probe, coprecipitation, and microwave-assisted hydrothermal
methods]. These microcrystals presented ... [+]
In this paper, we report the synthesis of silver
selenite (Ag2SeO3) by different methods [sonochemistry, ultrasonic probe, coprecipitation, and microwave-assisted hydrothermal
methods]. These microcrystals presented a structural long-range
order as confirmed by X-ray diffraction (XRD) and Rietveld
refinements and a structural short-range order as confirmed by
Fourier transform infrared (FTIR) and Raman spectroscopies. Xray photoelectron spectroscopy (XPS) provided information about
the surface of the samples indicating that they were pure. The
microcrystals presented different morphologies and sizes due to the
synthesis method as observed by field emission scanning electron
microscopy (FE-SEM). The optical properties of these microcrystals were evaluated by ultraviolet−visible (UV−vis) spectroscopy and photoluminescence (PL) measurements. Thermal analysis
confirmed the temperature stability of the as-synthetized samples. Further trapping experiments prove that the holes and hydroxyl
radicals, to a minor extent, are responsible for the photocatalytic reactions. The experimental results are sustained by first-principles
calculations, at the density functional theory (DFT) level, to decipher the structural parameters, electronic properties of the bulk,
and surfaces of Ag2SeO3. By matching the experimental FE-SEM images and theoretical morphologies, we are capable of finding a
correlation between the morphology and photocatalytic activity, along with photodegradation of the Rhodamine B dye under UV
light, based on the different numbers of unsaturated superficial Ag and Se cations (local coordination, i.e., clusters) of each surface. [-]
Publicado en
Inorganic Chemistry. 2021, 60, 5937−5954Entidad financiadora
Brazilian research financing institution | Universitat Jaume I | Ministerio de Ciencia, Innovación y Universidades (Spain)
Código del proyecto o subvención
FAPESP; Grant Nos. 2013/07296-2, 2019/03722-3, and 2019/25944-8 | UJI-B2019-30 | PGC2018094417-B-I00
Derechos de acceso
(c) 2021 American Chemical Society
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