Abstract Graphene oxide (GO) and graphene membranes were fabricated by dip-coating a GO dispersion on a specially designed 8YSZ mesoporous membrane. With the use of a reductive thermal treatment at 750 °C, it was possible to obtain a graphene membrane with permselectivities of 215, 80 and 170, for the gas pairs He/N2, H2/CO2 and H2/N2, respectively, and the H2 permeance reached ∼ 7·10−8 mol m−2 s−1 Pa−1. High H2O permeance and selectivity was achieved by processing a GO membrane in air at 300 °C. In pervaporation with H2O/IPA mixtures (5% H2O), the resulting membrane selectively separated H2O (separation factor > 800) and a flux of 4–8 kg m−2 h−1 was achieved at 70 °C.

中文翻译：

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具有 He、H 2 和 H 2 O 分子筛特性的新型石墨烯基膜

摘要 通过在专门设计的 8YSZ 介孔膜上浸涂 GO 分散体制备氧化石墨烯 (GO) 和石墨烯膜。通过在 750 °C 下使用还原热处理，可以获得对气体对 He/N2、H2/CO2 和 H2/N2 分别具有 215、80 和 170 的渗透选择性的石墨烯膜，并且H2 渗透率达到 ∼ 7·10−8 mol m−2 s−1 Pa−1。通过在 300 °C 的空气中处理 GO 膜，实现了高 H2O 渗透性和选择性。在使用 H2O/IPA 混合物（5% H2O）进行渗透蒸发时，所得膜选择性地分离了 H2O（分离因子 > 800），并且在 70 °C 下实现了 4–8 kg m-2 h-1 的通量。