摘要
通过将2-磺酸基对苯二甲酸单钠和L-组氨酸接枝到MOF-808的金属节点上合成了MOF-808-SBDC和MOF-808-His两种材料,随后将其作为填料分别掺入到SPEEK基质中,制备了一系列复合膜S/808-SBDC-X和S/808-His-X(X表示SPEEK基质中填料的含量)。采用扫描电子显微镜(SEM)和热重分析仪(TGA)对复合膜进行了表征,并测试了复合膜的氧化稳定性和机械稳定性等性能。结果显示MOF-808-SBDC和MOF-808-His在SPEEK基质中分散均匀,填料的引入可以有效地改善复合膜的氧化稳定性和机械稳定性,并使其具有良好的热稳定性。通过对质子电导率的研究发现,在70℃、100%RH下,复合膜S/808-SBDC-1.5表现出最佳的质子电导率(166.14 mS/cm),与原始SPEEK相比提高了64%。
MOF-808-SBDC and MOF-808-His were synthesized by grafting 2-sulfoterephthalic acid monosodium salt and L-histidine onto metal nodes of MOF-808,and then incorporated into SPEEK matrix as fillers to prepare a series of composite membranes S/808-SBDC-X and S/808-His-X(X indicates the content of fillers in the SPEEK matrix).The composite membranes were characterized by scanning electron microscopy(SEM)and thermogravimetric analyzer(TGA),and the oxidation stability and mechanical stability of the composite membrane were tested.The results show that MOF-808-SBDC and MOF-808-His have good compatibility with SPEEK matrix.The addition of filler can effectively improve the oxidation stability and mechanical stability of the composite membrane,and make it have good thermal stability.It was found that the composite membrane S/808-SBDC-1.5 showed the best proton conductivity(166.14 mS/cm)at 70℃and 100%RH,which increased by 64%compared with the original SPEEK.
作者
朱颖
周倩
牟雨婷
王贵雯
张晓灿
ZHU Ying;ZHOU Qian;MU Yuting;WANG Guiwen;ZHANG Xiaocan(Beijing Key Laboratory of Optical Detection Technology for Oil and Gas,College of Science,China University of Petroleum(Beijing),Beijing 102249,China)
出处
《功能材料》
北大核心
2025年第8期8112-8121,共10页
Journal of Functional Materials
基金
国家自然科学基金(22105225)
1158工程重质油全国重点实验室开放课题(SKLHOP2024115806)。
关键词
质子交换膜
磺化聚醚醚酮
金属有机框架
质子电导率
质子传导
proton exchange membrane
sulfonated polyether ether ketone
metal-organic framework
proton conductivity
proton conduction
