Mixed matrix membranes incorporated with reduced graphene oxide (rGO) and zeolitic imidazole framework-8 (ZIF-8) nanofillers for gas separation
| Autor: | Rosyiela Azwa Roslan, Najihah Jamil, Ahmad Fauzi Ismail, Nur Hashimah Alias, Munawar Zaman Shahruddin, Woei Jye Lau, Nur Hidayati Othman |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Oxide 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Inorganic Chemistry chemistry.chemical_compound law Materials Chemistry Imidazole Gas separation Physical and Theoretical Chemistry Fourier transform infrared spectroscopy Graphene 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Electronic Optical and Magnetic Materials Membrane chemistry Chemical engineering Ceramics and Composites Polyether block amide 0210 nano-technology Selectivity |
| Zdroj: | Journal of Solid State Chemistry. 270:419-427 |
| ISSN: | 0022-4596 |
| Popis: | Mixed matrix membranes (MMMs) were successfully fabricated by incorporating reduced graphene oxide (rGO) and zeolitic imidazole framework-8 (ZIF-8) nanofillers into the polyethersulfone (PES) matrix. The synthesized nanofillers were characterized using XRD, FTIR, TGA and BET before being embedded into PES-based membranes. Their effects on the membrane morphology and gas separation performances at various operating pressure were studied. It was found that the addition of nanofillers led to a significant enhancement in gas permeabilities, particularly when a combination of rGO-ZIF-8 nanofillers was used. However, the CO2 and CH4 permeabilities for 2.0rGO-ZIF-8 MMMs were observed to decrease with increasing operating pressure. This work suggests that the formation of interface voids and membrane defects in the MMMs might lead to the high gas permeabilities and low gas selectivity. The membranes were then coated with polyether block amide (PEBAX) and the O2/N2 and CO2/CH4 selectivities were observed to improve significantly. |
| Databáze: | OpenAIRE |
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