Ultrathin graphene oxide-based hollow fiber membranes with brush-like CO2-philic agent for highly efficient CO2 capture
Among the current CO 2 capture technologies, membrane gas separation has many inherent advantages over other conventional techniques. However, fabricating gas separation membranes with both high CO 2 permeance and high CO 2 /N 2 selectivity, especially under wet conditions, is a challenge. In this s...
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| Vydáno v: | Nature communications Ročník 8; číslo 1; s. 1 - 8 |
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| Hlavní autoři: | , , , , , , , , |
| Médium: | Journal Article |
| Jazyk: | angličtina |
| Vydáno: |
London
Nature Publishing Group UK
13.12.2017
Nature Publishing Group Nature Portfolio |
| Témata: | |
| ISSN: | 2041-1723, 2041-1723 |
| On-line přístup: | Získat plný text |
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| Shrnutí: | Among the current CO
2
capture technologies, membrane gas separation has many inherent advantages over other conventional techniques. However, fabricating gas separation membranes with both high CO
2
permeance and high CO
2
/N
2
selectivity, especially under wet conditions, is a challenge. In this study, sub-20-nm thick, layered graphene oxide (GO)-based hollow fiber membranes with grafted, brush-like CO
2
-philic agent alternating between GO layers are prepared by a facile coating process for highly efficient CO
2
/N
2
separation under wet conditions. Piperazine, as an effective CO
2
-philic agent, is introduced as a carrier-brush into the GO nanochannels with chemical bonding. The membrane exhibits excellent separation performance under simulated flue gas conditions with CO
2
permeance of 1,020 GPU and CO
2
/N
2
selectivity as high as 680, demonstrating its potential for CO
2
capture from flue gas. We expect this GO-based membrane structure combined with the facile coating process to facilitate the development of ultrathin GO-based membranes for CO
2
capture.
Membrane separation technologies show promise for CO
2
capture, but typically suffer from a trade-off between permeance and selectivity. Here, the authors produce hollow fiber membranes coated with graphene oxide and a CO
2
-philic agent that can efficiently separate CO
2
from flue gas under wet conditions. |
|---|---|
| Bibliografie: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 USDOE Office of Fossil Energy (FE) FE0026383 |
| ISSN: | 2041-1723 2041-1723 |
| DOI: | 10.1038/s41467-017-02318-1 |