RT info:eu-repo/semantics/article
T1 Effects of protonation, hydroxylamination, and hydrazination of g-C3N4 on the performance of Matrimid®/g-C3N4 membranes
A1 Soto Herranz, María
A1 Sánchez Báscones, Mercedes
A1 Hernández Giménez, Antonio
A1 Calvo Díez, José Ignacio
A1 Martín Gil, Jesús
A1 Martín Ramos, Pablo
K1 Carbon nitride
K1 CO2/CH4
K1 Gas separation
K1 Matrimid® 5218
K1 Mixed matrix membrane
K1 O2/N2
K1 31 Ciencias Agrarias
K1 22 Física
AB 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.
PB MDPI
SN 2079-4991
YR 2018
FD 2018
LK https://uvadoc.uva.es/handle/10324/52385
UL https://uvadoc.uva.es/handle/10324/52385
LA eng
NO Nanomaterials, 2018, vol. 8, n. 8, p. 1010
NO Producción Científica
DS UVaDOC
RD 24-nov-2024