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Title: The influence of cations intercalated in graphene oxide membranes in tuning H₂/CO₂ separation performance
Authors: Chuah, Chong Yang
Nie, Lina
Lee, Jong-Min
Bae, Tae-Hyun
Keywords: Engineering::Chemical engineering
Issue Date: 2020
Source: Chuah, C. Y., Nie, L., Lee, J. & Bae, T. (2020). The influence of cations intercalated in graphene oxide membranes in tuning H₂/CO₂ separation performance. Separation and Purification Technology, 246, 116933-.
Journal: Separation and Purification Technology
Abstract: Graphene oxide (GO) laminate membranes of controlled interlayer spacing were synthesized for the investigation in H2/CO2 separation. The interlayer distance of GO flakes was tuned by crosslinking and intercalation of La3+ or Co2+ cations between GO layers. Investigation via field-emission scanning electron microscope showed that a continuous selective layer was present in the GO-La3+, GO-Co2+ and GO membranes. Gas permeation results revealed that the GO-La3+ membrane had better H2 permeability and H2/CO2 selectivity than the other membranes, due to an increase in d-spacing between the GO layers and restricted defect formation in the GO laminate membranes. In addition, the H2/CO2 separation performance of GO-La3+ membrane was found to be close to the upper bound limit of conventional polymer membranes established in 2008.
ISSN: 1383-5866
DOI: 10.1016/j.seppur.2020.116933
Rights: © 2020 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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