氧化黑磷纳米片/SPEEK复合质子交换膜制备及性能  

Preparation and properties of oxidized black phosphorus nanosheets/sulfonated poly(ether ether ketone)composite membranes

作　　者：Afzal 陈婉婷 逄博 姜晓滨[1] 吴雪梅[1] 贺高红[1] Afzal;CHEN Wanting;PANG Bo;JIANG Xiaobin;WU Xuemei;HE Gaohong(State Key Laboratory of Fine Chemicals,Research and Development Center of Membrane Science and Technology,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学化工学院精细化工国家重点实验室膜科学与技术研究中心,大连116024

出　　处：《膜科学与技术》2022年第1期18-23,32,共7页Membrane Science and Technology

基　　金：国家自然科学基金(22008021,21776034,22021005);中国博士后科学基金(2020M680039);辽宁省博士科研启动基金计划项目(2021-BS-064)。

摘　　要：本文以红磷为前驱体,采用机械研磨法制备黑磷粉末,并通过液相剥离制备了氧化黑磷(OBP)纳米片.进一步,将OBP纳米片与磺化聚醚醚酮(SPEEK)聚合物共混,制备掺杂量为0~2.5%(质量分数,下同)的SPEEK/OBP复合质子交换膜.通过透射电镜表征了OBP形貌,并通过FTIR和XPS谱图确定OBP表面含有丰富的含氧官能团.这些含氧官能团可促进复合膜吸水,同时,可与SPEEK中磺酸基团形成氢键网络,促进质子传递.与纯SPEEK膜相比,SPEEK/OBP复合膜具有较高的离子交换容量、吸水率、溶胀率和质子传导率.当OBP纳米片添加量为2.0%时,SPEEK/OBP复合膜性能最优,其质子传导率在30℃时为0.026 S/cm,为纯SPEEK膜的1.73倍.Oxidized black phosphorus(OBP)nanosheet was prepared by mechanical grinding of black phosphorus powder using red phosphorus as precursor and subsequent liquid-phase exfoliation process.OBP nanosheets were further incorporated into sulfonated poly(ether ether ketone)matrix to regulate ionic channels and enhance proton transport.The obtained composite proton exchange membranes(SPEEK/OBP)with 0~2.5%(weight ratio)of OBP were prepared by a conventional solution casting method.As confirmed by FTIR and XPS spectra,OBP surface contains abundant oxygen-containing functional groups,which can promote water sorption of the composite membranes and form hydrogen bond network with sulfonic acid groups in SPEEK,facilitating proton transfer.Compared with the pristine SPEEK membrane,the SPEEK/OBP composite membrane exhibits higher ion exchange capacity(IEC),water uptake,swelling ratio and proton conductivity.With the optimal content of OBP nanosheets(2.0%),the SPEEK/OBP membrane achieves to the best performance,i.e.,its proton conductivity was 0.026 S/cm at 30℃,which is 1.73 times as high as that of the pristine SPEEK membrane.

关 键 词：质子交换膜 磺化聚醚醚酮 氧化黑磷纳米片 复合膜 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TQ425.236[化学工程]