Oxidized Carbon-Based Spacers for Pressure-Resistant Graphene Oxide Membranes.

Autor: Chernova EA; Department of Materials Science, Lomonosov Moscow State University, 1-73 Leninskiye Gory, Moscow 119991, Russia., Gurianov KE; Department of Materials Science, Lomonosov Moscow State University, 1-73 Leninskiye Gory, Moscow 119991, Russia., Petukhov DI; Department of Materials Science, Lomonosov Moscow State University, 1-73 Leninskiye Gory, Moscow 119991, Russia.; Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskiye Gory, Moscow 119991, Russia., Chumakov AP; ESRF-The European Synchrotron Radiation Facility, 71, Avenue des Martyrs, 38043 Grenoble, France., Valeev RG; Udmurt Federal Research Center of the Ural Brunch of Russian Academy of Sciences (UdmFRC of UB RAS), St. Them. Tatiana Baramzina 34, Izhevsk 426067, Russia., Brotsman VA; Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskiye Gory, Moscow 119991, Russia., Garshev AV; Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskiye Gory, Moscow 119991, Russia., Eliseev AA; Department of Materials Science, Lomonosov Moscow State University, 1-73 Leninskiye Gory, Moscow 119991, Russia.; Department of Chemistry, Lomonosov Moscow State University, 1-3 Leninskiye Gory, Moscow 119991, Russia.
Jazyk: angličtina
Zdroj: Membranes [Membranes (Basel)] 2022 Sep 26; Vol. 12 (10). Date of Electronic Publication: 2022 Sep 26.
DOI: 10.3390/membranes12100934
Abstrakt: In this study, we report the influence of carbon-based spacer-oxidized derivatives of fullerenes (fullerenols) C60(OH)26−32 and graphene oxide nanoribbons on the performance and pressure stability of graphene-oxide-based composite membranes. The impact of the intercalant shape and composition on the permeance of the selective layers for water vapors has been studied under pressure gradients. It is shown that the insertion of ball-shaped fullerenols between graphene oxide nanoflakes allows a suppression in irreversible permeance loss to 2−4.5% and reversible permeance loss to <25% (at 0.1 MPa), while retaining large H2O/N2 selectivities of up to ~30,000. The demonstrated approach opens avenues for the highly effective stabilization of GO membranes at elevated pressures for industrial-scale dehumidification.
Databáze: MEDLINE
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