Graphene oxide membranes on ceramic hollow fibers - Microstructural stability and nanofiltration performance

被引：142

作者：

Aba, Nor Farah Diana ^{[1
]}

Chong, Jeng Yi ^{[1
]}

Wang, Bo ^{[1
]}

Mattevi, Cecilia ^{[2
]}

Li, K. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, London SW7 2AZ, England

[2] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England

来源：

JOURNAL OF MEMBRANE SCIENCE | 2015年 / 484卷

基金：

英国工程与自然科学研究理事会;

关键词：

Graphene oxide; Membrane; Hollow fiber; Stability; Nanofiltration; THIN-FILMS; MOLECULAR SEPARATION; SOLVENT PROPERTIES; WATER; PERMEATION; TRANSPORT; FLOW; GAS; TRANSPARENT; ULTRATHIN;

D O I：

10.1016/j.memsci.2015.03.001

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Graphene oxide (GO) membranes have demonstrated great potential in liquid filtration. With the aim of real applications, GO membranes in a hollow fiber shape are of particular interest because of the highefficiency and easy-assembly features at the module level. We report here that GO membranes on ceramic hollow fiber substrates are unstable at the dry state, mainly due to the drying-related shrinkage. And we demonstrate that these GO hollow fiber membranes can be stabilized by keeping them wet after initial controlled formation of the membranes. The GO hollow fiber membranes show higher permeation fluxes of acetone and methanol than most commercial membranes, and reject molecules larger than 300 Da, showing a great potential in the use of value-added organic solvent nanofiltration processes. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：87 / 94

页数：8

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