Electrochemical oxidation of dibenzothiophene compounds on BDD electrode in acetonitrile–water medium
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Otros documentos de la autoría: Ornelas Dávila, Omar; Lacalle-Bergeron, Leticia; Ruiz Gutiérrez, P.; Dávila-Jiménez, Martín M.; Sirés Sadornil, Ignacio; Brillas, Enric; Roig-Navarro, Antoni F.; Beltran Arandes, Joaquin; Sancho, Juan V
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/33596
comunitat-uji-handle3:10234/33597
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INVESTIGACIONMetadatos
Título
Electrochemical oxidation of dibenzothiophene compounds on BDD electrode in acetonitrile–water mediumAutoría
Fecha de publicación
2019-05-23Editor
ElsevierCita bibliográfica
DÁVILA, O. Ornelas, et al. Electrochemical oxidation of dibenzothiophene compounds on BDD electrode in acetonitrile–water medium. Journal of Electroanalytical Chemistry, 2019, 847: 113172.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S1572665719304102#!Versión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
The electrochemical oxidation of dibenzothiophene and two derivatives, namely 4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene, was investigated either separately or as a mixture, on a BDD anode in a miscible ... [+]
The electrochemical oxidation of dibenzothiophene and two derivatives, namely 4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene, was investigated either separately or as a mixture, on a BDD anode in a miscible acetonitrile (87.5% v/v)–water (12.5% v/v, 0.01 M NaNO3) solution. Linear sweep voltammetry, cyclic voltammetry, chronoamperometry and bulk electrolysis under potentiostatic conditions suggested the probable occurrence of two pathways: direct electrochemical oxidation and indirect reaction with hydroxyl radicals and other reactive oxygen species formed at the BDD anode surface during water discharge. The products extracted upon electrolysis at 1.5 and 2.0 V vs. SCE were analyzed by Fourier-transform infrared spectroscopy, gas chromatography–mass spectrometry and ultra-high performance liquid chromatography coupled to electrospray ionization and quadrupole time-of-flight mass spectrometry (UHPLC-ESI-Q-TOF-MS). The main molecules identified were the corresponding sulfoxides or sulfones, depending on the applied anodic potential. Possible oxidation routes for the dibenzothiophene compounds are proposed. [-]
Proyecto de investigación
Benemérita Universidad Autónoma de Puebla, Mexico (postdoctoral grant (PRODEP) No. DSA/103.5/16/14302)Derechos de acceso
Copyright © 2019 Elsevier B.V.
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