Metal-organic frameworks (MOFs) have been widely investigated for their porosity and functional diversity. Inspired by the flexible designability of MOFs, UiO-66-NH₂/CNT with moniliform nanostructure was designed and synthesized successfully. [email protected]₂/CNT composite proton exchange membranes were prepared by loaded UiO-66-NH₂/CNT into sulfonated polyarylene ether nitrile (SPEN). Due to the addition of UiO-66-NH₂/CNT, all the properties of composite proton exchange membranes were improved. The composite membranes exhibit excellent thermal stability and dimensional stability. The tensile strength of the composite membranes was improved about twofold compared to that of recast SPEN membrane, which was contributed by the interlaced property and rigid structure of UiO-66-NH₂/CNT. Especially, the proton conductivity of the composite membranes was greatly facilitated by the additional proton acceptors and donors provided by the abundant amino groups and carboxyl groups in UiO-66-NH₂/CNT. Furthermore, the methanol permeability of [email protected]₂/CNT reduced consistently (from 6.13 to 0.96 × 10⁻⁷ cm² s⁻¹), which was much lower than that of Nafion membrane (21.36 × 10⁻⁷ cm² s⁻¹). All the results suggest that the design of multifunctional nanofillers based on the skeleton structure of MOFs could provide a new strategy to enhance the performance of PEMs.

金属有机框架（MOF）的孔隙率和功能多样性已得到广泛研究。受到MOF柔性设计的启发，成功设计并合成了具有单链纳米结构的UiO-66-NH ₂ / CNT。[受电子邮件保护] ₂ / CNT复合质子交换膜的制备方法是，将UiO-66-NH ₂ / CNT装入磺化聚亚芳基醚腈（SPEN）中。由于添加了UiO-66-NH ₂/ CNT改善了复合质子交换膜的所有性能。复合膜表现出优异的热稳定性和尺寸稳定性。复合膜的抗张强度比重铸SPEN膜的抗张强度提高了约两倍，这归因于UiO-66-NH ₂ / CNT的交错性能和刚性结构。特别是，UiO-66-NH ₂ / CNT中大量的氨基和羧基提供了额外的质子受体和供体，大大促进了复合膜的质子传导性。此外，[受电子邮件保护的] ₂ / CNT的甲醇渗透性持续降低（从6.13降至0.96×10 ^-7 cm ² s ^-1），远低于Nafion膜（21.36×10 ^-7 cm ² s ^-1）。所有结果表明，基于MOFs骨架结构的多功能纳米填料的设计可以为提高PEMs的性能提供新的策略。