Poly(vinyl alcohol)-graphene oxide nanohybrid "pore-filling" membrane for pervaporation of toluenein-heptane mixtures

被引：93
作者：
Wang, Naixin [1 ]
Ji, Shulan [1 ]
Li, Jie [1 ]
Zhang, Rong [1 ]
Zhang, Guojun [1 ]
机构：
[1] Beijing Univ Technol, Coll Environm & Energy Engn, Ctr Membrane Technol, Beijing 100124, Peoples R China
来源：
JOURNAL OF MEMBRANE SCIENCE | 2014年 / 455卷
关键词：
Dynamic pressure-driven assembly; Nanohybrid "pore-filling" membrane; Toluene/n-heptane separation; Graphene oxide; POLYELECTROLYTE MULTILAYER MEMBRANES; BENZENE/CYCLOHEXANE; SEPARATION; OXIDATION; GRAPHENE; SORPTION;
D O I：
10.1016/j.memsci.2013.12.023
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The stability of the membrane for pervaporation separation of aromatic/aliphatic mixtures is critical for industrial applications. To improve the stability of the membrane, a "pore-filling" membrane was prepared by dynamic pressure-driven assembly of a poly(vinyl alcohol)-graphene oxide (OVA-GO) nanohybricl layer onto an asymmetric polyaci:ylonitrile ultrafiltration membrane. The results of the swelling experiment suggest that the pore-filling structure could effectively reduce swelling of the nanohybricl membrane. Assembly of the nanohybricl membrane by molecular-level dispersion of GO in OVA led to enhanced affinity of the membrane to aromatic compounds and thus improved performance in the pervaporation of toluene/ii-heptane mixtures. Moreover, the dynamic assembly process could easily be used to adjust the separation performance by controlling the pressure, filtration time, polymer, and GO concentration. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：113 / 120
页数：8
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