%R 10.3390/membranes11050371
%N 5
%D 2021
%J Membranes
%L scholars15745
%O cited By 6
%K Fillers; Fourier transform infrared spectroscopy; Ionic liquids; Morphology; Separation; Silica; Spectrometers, Both Fourier Transform Infrared; Carbon dioxide separation; Mixed matrix membranes; Operating pressure; Organic membranes; Physical adsorption; Surface-modified; X ray photoelectron spectrometers, Carbon dioxide
%X This study focuses on the effect of modified silica fillers by EMINTf2 N via physical adsorption on the CO2 separation performance of a mixed matrix membrane (MMM). The IL-modified silica was successfully synthesized as the presence of fluorine element was observed in both Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectrometer (XPS) analyses. The prepared MMMs with different loadings of the IL-modified silica were then compared with an unmodified silica counterpart and neat membrane. The morphology of IL-modified MMMs was observed to have insignificant changes, while polymer chains of were found to be slightly more flexible compared to their counterpart. At 2 bar of operating pressure, a significant increase in performance was observed with the incorporation of 3 wt% Sil-IL fillers compared to that of pure polycarbonate (PC). The permeability increased from 353 to 1151 Barrer while the CO2 /CH4 selectivity increased from 20 to 76. The aforementioned increment also exceeded the Robeson upper bound. This indicates that the incorporation of fillers surface-modified with ionic liquid in an organic membrane is worth exploring for CO2 separation. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
%I MDPI AG
%V 11
%A S.N.A. Shafie
%A N.A.H. Md Nordin
%A M.R. Bilad
%A N. Misdan
%A N. Sazali
%A Z.A. Putra
%A M.D.H. Wirzal
%A A. Idris
%A J. Jaafar
%A Z. Man
%T emimtf2n-modified silica as filler in mixed matrix membrane for carbon dioxide separation