| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Spray-assisted layer-by-layer self-assembly of polyelectrolytes/graphene oxide nanofilms for enhanced CO2/N2 selectivity |
| 초록 |
CO2 gas is the main contributor to global warming and separation of CO2 from mixed gas is of interest due to increasing environmental concerns. Among the various separation method, membrane-based separation method has advantages in low cost and simple operation. Here, we introduce layer-by-layer assembled multilayered graphene oxide membrane for CO2/N2 selectivity. The thickness and internal structure of polyelectrolytes/graphene films were precisely controlled by adjusting electrostatic interaction. The polyelectrolytes layers supported the selective graphene oxide layer as a matrix layer and facilitated CO2 transportation by reversible interaction. Moreover, aligned a few nanometer thick graphene oxide layers provide selective pathway for CO2 molecules. The separation performance was influenced by the thickness of graphene oxide layers. The maximum CO2/N2 selectivity was 15.3 and permeances of CO2 and N2 were 1175.0 GPU and 76.6 GPU respectively. |
| 저자 |
허지웅, 홍진기
|
| 소속 |
중앙대 |
| 키워드 |
Layer-by-layer; Graphene oxide; CO2; Membrane
|
| E-Mail |
|
