Chernova Ekaterina A, Gurianov Konstantin E, Petukhov Dmitrii I, Chumakov Andrei P, Valeev Rishat G, Brotsman Victor A, Garshev Alexey V, Eliseev Andrei A
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.
Membranes (Basel). 2022 Sep 26;12(10):934. doi: 10.3390/membranes12100934.
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.
在本研究中，我们报告了富勒烯（富勒醇）C60(OH)26−32的碳基间隔氧化衍生物和氧化石墨烯纳米带对氧化石墨烯基复合膜性能和压力稳定性的影响。在压力梯度下研究了插层剂形状和组成对水蒸气选择性层渗透率的影响。结果表明，在氧化石墨烯纳米片之间插入球形富勒醇可将不可逆渗透率损失抑制至2−4.5%，可逆渗透率损失抑制至<25%（在0.1 MPa下），同时保持高达约30,000的大H2O/N2选择性。所展示的方法为在高压下高效稳定氧化石墨烯膜以用于工业规模除湿开辟了道路。
