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Título
F,O,S-codoped graphitic carbon nitride as an efficient photocatalyst for the synthesis of benzoxazoles and benzimidazoles
Autor
Año del Documento
2023
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
Catalysts, 2023, Vol. 13, Nº. 2, 385
Resumo
Graphitic carbon nitride (g-C3N4) is a metal-free heterogeneous catalyst that has attracted attention because of its good chemical stability, cost-effectiveness, and environmental friendliness. In the work presented herein, F,O,S-codoped carbon nitride was synthesized by heating a mixture of melamine cyanurate and trifluoromethanesulfonic acid at 550 °C for 50 min. The obtained product was characterized by transmission electron microscopy, infrared spectroscopy, X-ray powder diffraction, CHNS elemental analysis, total combustion-ion chromatography, X-ray photoelectron spectroscopy, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, and UV-Vis spectroscopy. Results point to an F,O,S-codoped g-C3N4. The material was applied as a photocatalyst for the formation of benzoxazoles and benzimidazoles by condensation–aromatization of 2-aminophenol or 1,2-phenylenediamine with suitable aldehydes (viz. benzaldehyde, 4-chlorobenzaldehyde, 2-naphthaldehyde, 2-hydroxybenzaldehyde, and 2-methoxybenzaldehyde), obtaining yields of up to 90% in 15 min under visible light irradiation, with good selectivity and reusability. Thus, the reported findings suggest that this F,O,S-codoped g-C3N4 may hold promise as a metal-free photocatalyst for the rapid synthesis of 2-arylbenzoxazoles and 2-arylbenzimidazoles.
Materias (normalizadas)
Photocatalysis
Asymmetric synthesis
Catalysis
Graphitic carbon nitride
Carbon composites
Carbono - Compuestos
Grafito
Spectroscopy
Infrared spectroscopy
Chemistry
Physical chemistry
Analytical chemistry
Materias Unesco
2210.01 Catálisis
2210 Química Física
2301 Química Analítica
2209.21 Espectroscopia
2301.08 Espectroscopia de Infrarrojos
ISSN
2073-4344
Revisión por pares
SI
Nota
Esta investigación ha sido financiada en parte por la Junta de Castilla y León a través de las ayudas de apoyo al grupo de investigación GIR-TADRUS
Version del Editor
Propietario de los Derechos
© 2023 The authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
Aparece en las colecciones
Arquivos deste item
Exceto quando indicado o contrário, a licença deste item é descrito como Atribución 4.0 Internacional