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Título
Effects of protonation, hydroxylamination, and hydrazination of g-C3N4 on the performance of Matrimid®/g-C3N4 membranes
Autor
Año del Documento
2018
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
Nanomaterials, 2018, vol. 8, n. 8, p. 1010
Resumo
One of the challenges to continue improving polymeric membranes properties involves the development of novel chemically modified fillers, such as nitrogen-rich 2-D nanomaterials. Graphitic carbon nitride (g-C3N4) has attracted significant interest as a new class of these fillers. Protonation is known to afford it desirable functionalities to form unique architectures for various applications. In the work presented herein, doping of Matrimid® with protonated g-C3N4 to yield Matrimid®/g-C3N4 mixed matrix membranes was found to improve gas separation by enhancing the selectivity for CO2/CH4 by up to 36.9% at 0.5 wt % filler doping. With a view to further enhancing the contribution of g-C3N4 to the performance of the composite membrane, oxygen plasma and hydrazine monohydrate treatments were also assayed as alternatives to protonation. Hydroxylamination by oxygen plasma treatment increased the selectivity for CO2/CH4 by up to 52.2% (at 2 wt % doping) and that for O2/N2 by up to 26.3% (at 0.5 wt % doping). Hydrazination led to lower enhancements in CO2/CH4 separation, by up to 11.4%. This study suggests that chemically-modified g-C3N4 may hold promise as an additive for modifying the surface of Matrimid® and other membranes.
Materias Unesco
31 Ciencias Agrarias
22 Física
Palabras Clave
Carbon nitride
CO2/CH4
Gas separation
Matrimid® 5218
Mixed matrix membrane
O2/N2
ISSN
2079-4991
Revisión por pares
SI
Patrocinador
European Union (project LIFE15-ENV/ES/000284)
Ministerio de Asuntos Económicos y Transformación Digital (projects MAT2016-76413-C2-R1 and MAT2016-76413-C2-R2)
Ministerio de Asuntos Económicos y Transformación Digital (projects MAT2016-76413-C2-R1 and MAT2016-76413-C2-R2)
Version del Editor
Propietario de los Derechos
© 2018 The Authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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