天津工业大学学报2017，Vol.36Issue(1)：20-26,7.DOI:10.3969/j.issn.1671-024x.2017.01.004
PTFE导电微孔膜EVMD过程及其电催化应用
PTFE conductive microporous membrane EVMD process and its electro-catalytic application
摘要
Abstract
To overcome the disodvantages of lack of flexibility of traditional conductive membranes. The polytetrafluoroe-thylene (PTFE) conductive microporous membrane was prepared by vacuum filtration with a biaxial stretching PTFE membrane as the base membrane, and a mixture of carboxylated-MWCNTs/graphenes as a conductive substrate. The PTFE conductive membrane was applied to electric field assisted vacuum membrane distillation (EVMD), and the antifouling performance was investigated, also the effect of the per unit area loading mass (PUALM) of the conductive substrate on the membrane performance, including conductivity and gas flux, were investigated. Results from these experiments revealed that for a PUALM of 10 g/m2 with conductivity of (0.12± 0.01)(Ω/sq)-1 and N2 flux of (59.24 ±5 ) m3/(m2·h), the PTFE membrane not only exhibited excellent conductivity but also showed a high rate of gas flux. Results showed that during EVMD, the relative flux can be increased from 36.38%to 71.98%, the PTFE conductive membrane exhibited the best antifouling ability using an intermittent electric field. At the same time, the PTFE conductive membrane was applied to degradation of dye by electro-catalysis. And the effects of PUALM of conductive substrate and dye concentration on degradation efficiency were investigated. Also, the stability of the membrane was discussed. The research results indicated that there was a good degradation efficiency and the decalorization was up to 90%or more, and the membrane had good stability, when the membrane was recycled 6 times, decolorization rate of the dye still kept above 90%.关键词
聚四氟乙烯(PTFE)/导电微孔膜/MWCNTs/石墨烯/电场辅助减压膜蒸馏(EVMD)/电催化Key words
PTFE/conductive microporous membrane/MWCNTs/graphene/EVMD/electro-catalysis分类
轻工纺织引用本文复制引用
黄庆林,刘欢,肖长发..PTFE导电微孔膜EVMD过程及其电催化应用[J].天津工业大学学报,2017,36(1):20-26,7.基金项目
国家自然科学基金青年基金资助项目(21404079) （21404079）
