UiO-66-NH_(2)复合磺化聚磷腈质子交换膜的制备与表征  

Preparation and Characterization of UiO-66-NH_(2)Composite Sulfonated Polyphosphazene Proton Exchange Membranes

作　　者：付凤艳 高志华 王言 王晓红 张丽 王培 刘彦彬 FU Fengyan;GAO Zhihua;WANG Yan;WANG Xiaohong;ZHANG Li;WANG Pei;LIU Yanbin(Department of Chemistry,Hengshui University,Hengshui 053000,China)

机构地区：[1]衡水学院化学系,衡水053000

出　　处：《人工晶体学报》2024年第10期1809-1814,共6页Journal of Synthetic Crystals

基　　金：河北省高等学校科学研究项目(科学技术)(ZC2024130);衡水学院校级培育基金项目(2023XJZX18,2023XJZX25);衡水学院校级课题(2023ZRZ03,2023ZRY17,2024ZRZ03);“河北省湿地保护与绿色发展协同创新中心”专项课题(2023XTCX009,2023XTCX033)。

摘　　要：金属有机框架(MOF)材料由于具有结构可调、孔隙率高、比表面积大等特点受到广泛关注。将官能团修饰的MOF引入到能够提供质子传导的离子型聚合物中,能够制备具有较高质子传导率的质子交换膜。本文将UiO-66-NH_(2)引入到磺化聚磷腈(SPFPP)中制备了复合质子交换膜,并表征了复合膜的热稳定性能、溶胀度、吸水率和质子传导率。复合膜具有较优异的热稳定性能,复合膜的溶胀度小于纯的SPFPP膜。UiO-66-NH_(2)能够提高复合膜的保水能力,因而复合膜的吸水率高于纯的SPFPP膜。这种高的保水能力可以提高膜在高湿度条件下的质子传导率,复合膜SP/UiO-66-NH_(2)-0.6的质子传导率在80℃、100%湿度条件下可达到0.179 S/cm,而在相同条件下纯的SPFPP膜的质子传导率为0.120 S/cm。Metal organic framework(MOF)materials have attracted widespread attention due to their tunable structure,high porosity,and large specific surface area.MOF modified with functional groups were introduced into ionic polymers that could provide proton conduction,which could prepare proton exchange membranes with high proton conductivity.In this paper,UiO-66-NH_(2)were introduced into sulfonated polyphosphazene(SPFPP)to prepare composite proton exchange membranes,the thermal stability,swelling degree,water uptake,and proton conductivity were characterized.Composite membranes exhibits excellent thermal stability,the swelling degree of the composite membranes are lower than that of the pure SPFPP membrane.UiO-66-NH_(2)could improve the water retention capacity of composite membranes,resulting in higher water uptakes of composite membranes than pure SPFPP membranes.This higher water retention capacity could improve the proton conductivity of the membrane under high humidity conditions.The proton conductivity of composite membranes SP/UiO-66-NH_(2)-0.6 reaches up to 0.179 S/cm under 80℃,100%RH,while the proton conductivity of pure SPFPP membranes is 0.120 S/cm under the same conditions.

关 键 词：金属有机框架材料 UiO-66-NH_(2) 磺化聚磷腈 溶胀度 吸水率 质子传导率 

分 类 号：O631[理学—高分子化学]