(376u) Multilayer Composite Membranes with Superior CO2 Separation Properties
This paper deals with the fabrication and gas-transport-performance evaluation of multilayer composite membranes. These membranes were made from a porous polyacrylonitrile (PAN) substrate, GO-melamine (GO-M), an imidazolium-based ionic liquid (IL), and a polydimethylsiloxane (PDMS) coating layer. The doped GO-melamine (GO-M) nanomaterials were prepared by modifying the surfaces of GO nanosheets with melamine and then mixing the modified nanosheets with the IL. The GO-M-IL suspension was dip-coated on the PAN substrate, which was then coated with a layer of PDMS. Results from a thorough investigation of the influence of the GO concentration on the gas-transport properties and long-term stability of the multilayer membranes are presented. Compared to the membrane containing just the IL, the GO-M-IL-based membranes have better CO2/N2 and CO2/CH4 selectivities and slightly lower CO2 permeances.
- Wang, S.; Wu, Y.; Zhang, N.; He, G.; Xin, Q.; Wu, X.; Wu, H.; Cao, X.; Guiver, M. D.; Jiang, Z., A highly permeable graphene oxide membrane with fast and selective transport nanochannels for efficient carbon capture. Energy & Environmental Science 2016, 9 (10), 3107-3112.
- Shen, J.; Liu, G.; Huang, K.; Chu, Z.; Jin, W.; Xu, N., Subnanometer two-dimensional graphene oxide channels for ultrafast gas sieving. ACS nano 2016, 10 (3), 3398-3409.
- Karunakaran, M.; Villalobos, L. F.; Kumar, M.; Shevate, R.; Akhtar, F. H.; Peinemann, K.-V., Graphene oxide doped ionic liquid ultrathin composite membranes for efficient CO 2 capture. Journal of Materials Chemistry A 2017, 5 (2), 649-656.
- Zeng, S.; Zhang, X.; Bai, L.; Zhang, X.; Wang, H.; Wang, J.; Bao, D.; Li, M.; Liu, X.; Zhang, S., Ionic-liquid-based CO2 capture systems: structure, interaction and process. Chemical reviews 2017, 117 (14), 9625-9673.