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Enhanced CO 2 transport through rod‐shaped Al 2 O 3 nanoparticles for ionic liquid composite membranes
Author(s) -
Jeon Hyunsik,
Kang Sang Wook
Publication year - 2019
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.25135
Subject(s) - polysulfone , materials science , ionic liquid , thermogravimetric analysis , permeance , membrane , scanning electron microscope , composite number , transmission electron microscopy , tetrafluoroborate , raman spectroscopy , nanoparticle , chemical engineering , selectivity , ionic bonding , composite material , nanotechnology , polymer , ion , organic chemistry , chemistry , permeation , biochemistry , physics , optics , engineering , catalysis
Highly selective composite membranes were prepared using 1‐butyl‐3‐methyl imidazolium tetrafluoroborate (BMIM + BF 4 − ) and rod‐shaped aluminum oxide onto polysulfone support. The BMIM + BF 4 − / rod‐shaped Al 2 O 3 composite membrane with 50‐nm nanoparticles (NPs) showed a CO 2 permeance of 39.3 GPU and a CO 2 /N 2 selectivity of 43.7. Rod‐like 50‐nm NPs in ionic liquids showed better performance than spherical 13‐nm NPs in membranes using the same weight ratio and same support. These results indicate that the shape of the NPs has a greater effect on CO 2 transport than the size of the NPs. The chemical and physical properties of this composite membrane were characterized by transmission electron microscopy, scanning electron microscopy, Raman spectroscopy, and thermogravimetric analysis. POLYM. COMPOS., 40:2954–2958, 2019. © 2018 Society of Plastics Engineers