Abstract Ionic liquid 1-butyl-3-methylimidazoluim tetrafluoroborate (BMIM+BF4−) was used for preparation of composite membranes containing ZnO nanoparticles. A poly(ethylene oxide) (PEO) composite membrane was used for CO2/N2 separation. The high selectivity of ZnO/BMIM+BF4− membrane was already studied. It was found that when ZnO nanoparticles were dispersed with an ionic liquid (BMIM+BF4−), the permeance of CO2 was significantly enhanced to 101 GPU, compared to the neat ionic liquid BMIM+BF4− membrane to show 17.0 GPU. However, the previously studied ZnO/BMIM+BF4− composites separation membrane was the liquid state membrane. In the case of liquid-state membrane, the liquid could be easily penetrated into the membrane support over time. Thus, since the thickness of the membrane becomes thicker, the separation performance of the membrane would be reduced. In order to overcome these problems, the solid-state membranes were required. Therefore, in this study the separation performance of CO2 and N2 by adding ZnO/BMIM+BF4− composites into poly(ethylene oxide) as polymer matrix.

中文翻译：

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由聚（环氧乙烷）/离子液体/ZnO组成的用于CO2分离的纳米复合膜

摘要 离子液体1-丁基-3-甲基咪唑啉四氟硼酸盐(BMIM+BF4-)用于制备含ZnO纳米颗粒的复合膜。聚（环氧乙烷）（PEO）复合膜用于 CO2/N2 分离。已经研究了 ZnO/BMIM+BF4− 膜的高选择性。结果表明，当 ZnO 纳米颗粒用离子液体 (BMIM+BF4-) 分散时，CO2 的渗透性显着提高到 101 GPU，与纯离子液体BMIM+BF4-膜相比，显示为 17.0 GPU。然而，之前研究的ZnO/BMIM+BF4−复合材料分离膜是液态膜。在液态膜的情况下，随着时间的推移，液体很容易渗透到膜支撑中。因此，由于膜的厚度变厚，膜的分离性能会降低。为了克服这些问题，需要固态膜。因此，在本研究中，通过将 ZnO/BMIM+BF4− 复合材料添加到作为聚合物基质的聚（环氧乙烷）中来研究 CO2 和 N2 的分离性能。