首页|Enhancing CO2 transport with plasma-functionalized ionic liquid membranes
Enhancing CO2 transport with plasma-functionalized ionic liquid membranes
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The ionic liquid(IL)l-butyl-3-methylimidazolium tetrafluoroborate treated with radiofrequency plasma is proposed for functionalization and immobilization on polyethersulfone supports to form supported ionic liquid membranes for CO2 separation.The effects of treatment time and transmembrane pressure difference on CO2 permeance were evaluated.The best gas permeation performance was obtained with a treatment time of 10 min and the transmembrane pressure difference was 0.25 MPa.Characterization of the materials by Fourier transform infrared spectroscopy,x-ray photoelectron spectroscopy and nuclear magnetic resonance spectroscopy demonstrates that the IL is grafted with carboxyl groups and deprotonated through plasma treatment.A preliminary mechanism for the plasma treatment and facilitated transport of CO2 has been proposed on this basis.
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP),Institute of Environmental Science,Fudan University,Shanghai 200433,People's Republic of China
National Key R&D Program of China 4 Intergovernmental International Scientific and Technological Innovation Cooperation'
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