▎ 摘　　要

Long-term gas separation performance and stability are the predominant factors enabling successful implementation of mixed matrix membranes (MMMs) for large-scale industrial applications. This study highlights the integration of CNT and graphene into Polysulfone (PSf) matrix and studied the synergistic effect on the permeation characteristics of O-2 /N-2 pair. An electrical alignment technique has adopted for the preparation of the MMMs by solution casting method. Also, the parent counterparts, including PSf/CNT and PSf/rGO systems have prepared. FTIR, UV, and EDS established the existence of membrane-forming materials. The electron micrographs confirmed uniform dispersion of the filler phase within the PSf matrix, thereby indicating an effectual increase in the permeation characteristics. The hybrid system exhibited improved mechanical and thermal stability against other tested membranes. The prepared membranes showed excellent O-2 permeation with higher selectivity for N-2, despite the minimal difference in molecular size. The hybrid system rendered uniform permeation coefficient for 120 h; also displayed excellent hydrothermal and chemical stabilities, thus establishing commercial potential. (C) 2019 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.