Functionally graded membranes from nanoporous covalent organic frameworks for highly selective water permeation
文献类型：期刊论文
| 作者 | Pan, FS; Cheng, XX; Xu, Z; Shi, BB; Yao, ZQ; Wu, H; Yang, H ; Jiang, ZY; Liu, GH; Cao, XZ
|
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2018 |
| 卷号 | 6期号:2页码:583-591 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c7ta09596a |
| 文献子类 | Article |
| 英文摘要 | Natural materials are often arranged in intricate gradient architectures to implement specific functionalities. Implanting such an exquisite prototype into synthetic membranes remains a grand challenge in real-world applications. In this study, functionally graded membranes are fabricated through a surface segregation method using 2D nanoporous COF TpHZ and poly(ether sulfone) as composite building blocks. During the membrane formation, the COF nanosheets can spontaneously migrate from the membrane bulk to the membrane surface to form a gradient distribution, which can be varied by manipulating the COF addition content and phase inversion temperature. The highest COF content on the membrane surface can be up to 50.90 vol%. Due to the formation of a graded structure, the membranes are endowed with remarkably increased hydrophilicity and free volume characteristics. Accordingly, the optimized membrane exhibits a permeation flux of 2.48 kg m(-2) hr(-1) and a high separation factor of 1430, and remains robust during a stability test for 320 h, and is one of the most efficient mixed matrix membranes for water/ethanol separation. The separation factor is two orders of magnitude more than that of existing commercial membranes. The concept of functionally graded membranes can be applicable to the development of a broad range of high-performance materials. |
| 电子版国际标准刊号 | 2050-7496 |
| WOS关键词 | MIXED-MATRIX MEMBRANES ; PERVAPORATION DEHYDRATION ; COMPOSITE MEMBRANES ; HYBRID MEMBRANE ; SEPARATION ; PERFORMANCE ; ULTRATHIN ; LAYER ; NANOMATERIALS ; CONSTRUCTION |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000419188300030 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285516]  |
| 专题 | 高能物理研究所_实验物理中心 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Pan, FS,Cheng, XX,Xu, Z,et al. Functionally graded membranes from nanoporous covalent organic frameworks for highly selective water permeation[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(2):583-591. |
| APA | Pan, FS.,Cheng, XX.,Xu, Z.,Shi, BB.,Yao, ZQ.,...&曹兴忠.(2018).Functionally graded membranes from nanoporous covalent organic frameworks for highly selective water permeation.JOURNAL OF MATERIALS CHEMISTRY A,6(2),583-591. |
| MLA | Pan, FS,et al."Functionally graded membranes from nanoporous covalent organic frameworks for highly selective water permeation".JOURNAL OF MATERIALS CHEMISTRY A 6.2(2018):583-591. |
入库方式： OAI收割
来源：高能物理研究所
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