We report the effect of graphene oxide (GO) on a facilitated CO2 transport membrane consisting of copper nanoparticles (CuNP) prepared in situ in ionic liquids (IL), such as 1-hexyl-3-methylimidazolium nitrate (HmimNO3) and 1-methyl-3-octylimidazolium tetrafluoroborate (MoimBF4). The highly smooth surface of the GO was characterized by atomic force microscopy, and the interactions between the GO and the IL were investigated by Fourier transform-Raman spectroscopy. With GO, the fabricated HmimNO3/CuNP/GO and MoimBF4/CuNP/GO composite membranes showed CO2/N2 separations of 8.7 and 30.7, respectively, with enhanced CO2 gas permeance compared to IL/CuNP composite membrane without GO. This implies that graphene oxide can be used as an effective additive in nanocomposite membranes for enhanced CO2 permeance.
Bibliographical noteFunding Information:
This work was supported by an Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean Government Ministry of Trade, Industry and Energy ( 20122010100040 ). This work was also supported by the Basic Science Research Program ( 2013021962 ) and Korea CCS R&D Center through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning. Y.S. Kang also acknowledges the Basic Science Research Program through the National Research Foundation of Korea (NRF) grant funded by the Ministry of Science, ICT and Future Planning for the Center for Next Generation Dye-sensitized Solar Cells (No. 2011-0001055).
All Science Journal Classification (ASJC) codes
- Environmental Chemistry
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering