|
个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 精细化工全国重点实验室主任，教育部智能材料化工前沿科学中心执行主任，大连理工大学膜科学与技术研究开发中心主任
性别：女
毕业院校：中国科学院大连化物所
学位：博士
所在单位：化工学院
学科：化学工程. 膜科学与技术. 生物医学工程
联系方式：hgaohong@dlut.edu.cn
电子邮箱：hgaohong@dlut.edu.cn
Hybrid anion exchange membrane of hydroxyl-modified polysulfone incorporating guanidinium-functionalized graphene oxide
点击次数：
论文类型：期刊论文
发表时间：2017-11-01
发表刊物：IONICS
收录刊物：SCIE、EI、Scopus
卷号：23
期号：11
页面范围：3085-3096
ISSN号：0947-7047
关键字：Anion exchange membrane; Graphene oxide; Guanidinium
摘要：Incorporating nanofillers is an effective method to balance conductivity and mechanical strength of anion exchange membranes (AEMs). In this work, a series of AEMs were prepared via embedding guanidinium-functionalized graphene oxide (GGO) into un-quaternized, diethanolamine-modified polysulfone (HPSf). The improved hydrophilicity of HPSf allows for better compatibility between GGO and polymer and also gives higher water uptake, which is beneficial for facilitating ion transport and alleviating hydroxide attack. AEM of HPSf embedding an optimized amount of GGO (0.88 mmol g(-1)) exhibits the highest conductivity of 11 mS cm(-1) at 30 A degrees C, which is 38% higher than that of pristine PSf-GGO membrane. It also possesses excellent anti-swelling stability (9% swelling ratio at 60 A degrees C). When treated with 1 M NaOH at 60 A degrees C for 120 h, HPSf-GGO-25% experienced a conductivity decay by 25%. Our work provides a route to fabrication of hybrid AEMs with improved interface properties and well-balanced conductivity and robustness.