Artículo
Hydrazine modified g-C3N4 with enhanced photocatalytic activity for degradation of indigo carmine
Valencia, Karen; Hernández Gordillo, Agileo; Mendez Galvan, Melissa
; Morett, Diego; Rodil, Sandra E.
Fecha de publicación:
11/2022
Editorial:
Elsevier
Revista:
Materials Science In Semiconductor Processing
ISSN:
1369-8001
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Polymeric graphitic carbon nitride (g-C3N4) was obtained from urea and modified by heat polymerization at 550 °C in the presence of hydrazine as a modifier agent. The influence of in-situ generated NH3 by hydrazine decomposition at different contents (0.5, 1, 1.5, and 2 mL) on the physicochemical properties and surface properties (water contact angle and point of zero charge) of the g-C3N4 were investigated. The modified g-C3N4 were analyzed by X-ray diffraction, scanning electron microscopy, diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, photoluminescence, Fourier Transform Infrared, water contact angle, surface area, and the point of zero charge. The in-situ generated NH3 induced an evolution from nano-flakes to lamellar plate morphology depending on stacked interplanar. The influence of surface properties on the photocatalytic response of the unmodified and modified g-C3N4 was tested in the photodegradation of indigo carmine dye at pH = 3.5 and 6.5 solutions under blue LEDs light. The photostability of the samples was tested after 4 cycles of reaction. The properties (surface area (SA); water contact angle (WCA), and optical gap) influence the photocatalytic response, which was summarized in a single parameter defined as SA/(WCA*gap). The maximum value of this product match with results obtained for the most active photocatalyst (U-Hz1).
Palabras clave:
G-C3N4
,
INDIGO CARMINE
,
PHOTOCATALYSIS
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Identificadores
Colecciones
Articulos(IBBEA)
Articulos de INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Articulos de INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Citación
Valencia, Karen; Hernández Gordillo, Agileo; Mendez Galvan, Melissa; Morett, Diego; Rodil, Sandra E.; Hydrazine modified g-C3N4 with enhanced photocatalytic activity for degradation of indigo carmine; Elsevier; Materials Science In Semiconductor Processing; 150; 11-2022; 1-14
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