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Enhanced proton conductivity of sulfonated poly(arylene ether ketone sulfone) polymers by incorporating phosphotungstic acid-ionic-liquid-functionalized metal-organic framework
Journal of Membrane Science ( IF 8.4 ) Pub Date : 2021-03-29 , DOI: 10.1016/j.memsci.2021.119304
Zhenguo Zhang , Jiahui Ren , Jingmei Xu , Lingxin Meng , Pengyun Zhao , Hao Wang , Zhe Wang

In this work, the MIL-100(Fe) was selected as blank-sample. Using one-pot method, phosphotungstic acids were encapsulated in the blank-sample to prepare HPW@MIL-100(Fe). Then, the ionic liquid ([EMIM][N(Tf)2]) was chosen to modify the HPW@MIL-100(Fe). And the phosphotungstic acid-ionic-liquid (HPW-ILs) modified MIL-100(Fe) (HPW-ILs@MIL-100(Fe)) was obtained. The final product was introduced into polymer matrixes (C-SPAEKS) to prepare hybrid membranes. The structures and morphologies of MOFs and membranes were characterized by field emission scanning electron microscope (FTSEM), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). This series of membranes exhibited increasing proton conductivities from 0.043 S cm−1 of C-SPAEKS to 0.138 S cm−1 of HPW-ILs@MOF-4 at 100 °C and 100% relative humidity. Furthermore, these hybrid membranes have enhanced mechanical properties and dimensional stabilities. Obviously, the HPW-ILs@MIL-100(Fe) had a beneficial function on improving the performance of PEMs and showed great potential in PEMs applications.



中文翻译:

通过引入磷钨酸-离子-液体-官能化的金属-有机骨架,提高了磺化聚(亚芳基醚酮砜)聚合物的质子传导性

在这项工作中,MIL-100(Fe)被选作空白样品。使用一锅法,将磷钨酸封装在空白样品中以制备HPW @ MIL-100(Fe)。然后,选择离子液体([EMIM] [N(Tf)2 ])对HPW @ MIL-100(Fe)进行改性。并获得了磷钨酸-离子液体(HPW-ILs)改性的MIL-100(Fe)(HPW-ILs @ MIL-100(Fe))。将最终产品引入聚合物基质(C-SPAEKS)中以制备杂化膜。通过场发射扫描电子显微镜(FTSEM),傅立叶变换红外光谱(FTIR)和X射线衍射(XRD)表征了MOF和膜的结构和形态。该系列膜的质子电导率从C-SPAEKS的0.043 S cm -1增加到0.138 S cm -1在100°C和100%相对湿度下的HPW-ILs @ MOF-4的浓度。此外,这些杂化膜具有增强的机械性能和尺寸稳定性。显然,HPW-ILs @ MIL-100(Fe)对改善PEM的性能具有有益的作用,并在PEM应用中显示出巨大的潜力。

更新日期:2021-04-08
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