Graphene oxide membranes on ceramic hollow fibers - Microstructural stability and nanofiltration performance
Graphene oxide membranes on ceramic hollow fibers - Microstructural stability and nanofiltration performance
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DOI：
10.1016/j.memsci.2015.03.001
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发表时间：
2015-06-15
影响因子：
9.5
通讯作者：
Li, K.
中科院分区：
文献类型：
--
作者：
Aba, Nor Farah Diana;Chong, Jeng Yi;Li, K.
氧化石墨烯（GO）膜在液体过滤中表现出巨大的潜力。以真实的应用为目的，中空纤维形状的GO膜由于在模块水平上的高效率和易于组装的特征而特别令人感兴趣。我们在这里报告，陶瓷中空纤维基板上的GO膜在干燥状态下是不稳定的，主要是由于干燥相关的收缩。并且我们证明，这些GO中空纤维膜可以通过在膜的初始受控形成之后保持它们湿润来稳定。GO中空纤维膜显示出比大多数商业膜更高的丙酮和甲醇渗透通量，并且拒绝大于300 Da的分子，显示出在使用增值有机溶剂纳滤过程中的巨大潜力。(C)2015 Elsevier B.V.版权所有。
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.