Abstract Hybrid materials based on carbon nanotubes (CNTs) and polymers have shown attractive properties and potential applications. However, the poor quality and aggregation of CNTs are challenging during the preparation of hybrid materials. To address these issues, we fabricated the vertically aligned (VA) CNT (open-end) hybrid membrane with annealing treatment, which significantly improves the phenol separation performance, single gas permeability of CO2 and N2, and binary CO2/N2 mixture separation performance. The free volume provided by the orderly CNT channels and their atomically smooth walls contribute to the markedly increased diffusion rate and permeability of the membrane. The density functional theory (DFT) calculations indicate that the small molecules in the membrane preferentially transport along the internal channels of CNTs. Furthermore, this membrane also has excellent conductivity and resistance stability after 50 cycles of tensile deformation. For the first time, it reveals that this unique structured CNTs membrane can be applied in environmental, gas separation, and electronics fields with superior performance.

中文翻译：

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具有优异分离性能和导电性的碳纳米管阵列混合膜

摘要 基于碳纳米管 (CNT) 和聚合物的混合材料已显示出有吸引力的特性和潜在的应用。然而，在制备混合材料的过程中，碳纳米管的质量差和聚集是一个挑战。为了解决这些问题，我们制造了经过退火处理的垂直排列 (VA) CNT（开口端）混合膜，显着提高了苯酚分离性能、CO2 和 N2 的单一气体渗透率以及二元 CO2/N2 混合物的分离性能。有序的 CNT 通道及其原子光滑壁提供的自由体积有助于显着增加膜的扩散速率和渗透性。密度泛函理论 (DFT) 计算表明，膜中的小分子优先沿 CNT 的内部通道传输。此外，该膜在拉伸变形 50 次循环后还具有优异的导电性和电阻稳定性。首次揭示了这种独特结构的碳纳米管膜可以以优异的性能应用于环境、气体分离和电子领域。