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Mixed matrix membranes incorporated with reduced graphene oxide (rGO) and zeolitic imidazole framework-8 (ZIF-8) nanofillers for gas separation

Jamil, Najihah and Othman, Nur Hidayati and Alias, Nur Hashimah and Shahruddin, Munawar Zaman and Roslan, Rosyiela Azwa and Lau, Woei Jye and Ismail, Ahmad Fauzi (2019) Mixed matrix membranes incorporated with reduced graphene oxide (rGO) and zeolitic imidazole framework-8 (ZIF-8) nanofillers for gas separation. Journal of Solid State Chemistry, 270 . pp. 419-427. ISSN 0022-4596

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Official URL: http://dx.doi.org/10.1016/j.jssc.2018.11.028

Abstract

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.

Item Type:Article
Uncontrolled Keywords:gas separation, mixed matrix membrane, nanofillers, polyethersulfone
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:87788
Deposited By: Yanti Mohd Shah
Deposited On:30 Nov 2020 21:20
Last Modified:30 Nov 2020 21:20

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