Enhanced water permeation through sodium alginate membranes by incorporating graphene oxides
文献类型：期刊论文
| 作者 | Cao, KT; Jiang, ZY; Zhao, J; Zhao, CH; Gao, CY; Pan, FS; Wang, BY; Cao, XZ; Yang, J;王宝义; Cao XZ(曹兴忠)
|
| 刊名 | JOURNAL OF MEMBRANE SCIENCE
 |
| 出版日期 | 2014 |
| 卷号 | 469页码:272-283 |
| 关键词 | Graphene oxides Hybrid membrane Water channel Crystallinity Pervaporation dehydration |
| 英文摘要 | Pristine graphene oxide (pGO) and reduced graphene oxide (rGO) nanosheets with different physical and chemical structures were prepared, and blended into sodium alginate matrix to fabricate two types of hybrid membranes. Compared with pGO, rGO possessed smaller nanosheet size, more structural defects, less negative charges, less oxygen-containing groups, and more non-oxide regions. The hybrid membranes exhibited brick-and-mortar morphology, unusual crystallinity change, and increased free volume. Swelling resistance and mechanical stability of the hybrid membranes were both enhanced. Pervaporation dehydranon was conducted utilizing ethanol/water mixture as model to explore the selective water permeation through hybrid membranes. Due to synergy between permselectivity of water channels and crystallinity of polymer matrix, the hybrid membranes, particularly for rGO-filled membranes, exhibited improved separation performance with increased separation factor and an unusual change of permeation flux. When the rGO content was 1.6 wt%, optimum separation performance with a separation factor of 1566 and a permeation flux of 1699 g/(m(2)h) was achieved. The transport mechanism was investigated based on transport property comparison of the two types of membranes, revealing that more water channels with higher selectivity could be constructed and controlled by graphene oxide structure. Moreover, the hybrid membrane displayed a good long-term operation stability. (C) 2014 Elsevier B.V. All rights reserved. |
| 学科主题 | Engineering; Polymer Science |
| 收录类别 | SCI |
| WOS记录号 | WOS:000341141300027 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225117]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Cao, KT,Jiang, ZY,Zhao, J,et al. Enhanced water permeation through sodium alginate membranes by incorporating graphene oxides[J]. JOURNAL OF MEMBRANE SCIENCE,2014,469:272-283. |
| APA | Cao, KT.,Jiang, ZY.,Zhao, J.,Zhao, CH.,Gao, CY.,...&杨静.(2014).Enhanced water permeation through sodium alginate membranes by incorporating graphene oxides.JOURNAL OF MEMBRANE SCIENCE,469,272-283. |
| MLA | Cao, KT,et al."Enhanced water permeation through sodium alginate membranes by incorporating graphene oxides".JOURNAL OF MEMBRANE SCIENCE 469(2014):272-283. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。