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Open AccessArticle

Pebax® 2533/Graphene Oxide Nanocomposite Membranes for Carbon Capture

1
Department of Civil, Chemical, Environmental and Material Engineering (DICAM), University of Bologna, Via Terracini 28, 40131 Bologna, Italy
2
Department of Energy Engineering, Hanyang University, Seoul 133-791, Korea
3
Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
*
Author to whom correspondence should be addressed.
Membranes 2020, 10(8), 188; https://doi.org/10.3390/membranes10080188
Received: 23 June 2020 / Revised: 10 August 2020 / Accepted: 11 August 2020 / Published: 15 August 2020
(This article belongs to the Special Issue Membranes: 10th Anniversary)
In this work, the behavior of new GO-based mixed matrix membranes was tested in view of their use as CO2-selective membrane in post combustion carbon capture applications. In particular, the new materials were obtained by mixing of Pebax® 2533 copolymer with different types of graphene oxide (GO). Pebax® 2533 has indeed lower selectivity, but higher permeability than Pebax® 1657, which is more commonly used for membranes, and it could therefore benefit from the addition of GO, which is endowed with very high selectivity of CO2 with respect to nitrogen. The mixed matrix membranes were obtained by adding different amounts of GO, from 0.02 to 1% by weight, to the commercial block copolymers. Porous graphene oxide (PGO) and GO functionalized with polyetheramine (PEAGO) were also considered in composites produced with similar procedure, with a loading of 0.02%wt. The obtained films were then characterized by using SEM, DSC, XPS analysis and permeability experiments. In particular, permeation tests with pure CO2 and N2 at 35°C and 1 bar of upstream pressure were conducted for the different materials to evaluate their separation performance. It has been discovered that adding these GO-based nanofillers to Pebax® 2533 matrix does not improve the ideal selectivity of the material, but it allows to increase CO2 permeability when a low filler content, not higher than 0.02 wt%, is considered. Among the different types of GO, then, porous GO seems the most promising as it shows CO2 permeability in the order of 400 barrer (with an increase of about 10% with respect to the unloaded block copolymer), obtained without reducing the CO2/N2 selectivity of the materials, which remained in the order of 25. View Full-Text
Keywords: Pebax® 2533; graphene oxide; nanocomposite; gas separation membranes; carbon capture Pebax® 2533; graphene oxide; nanocomposite; gas separation membranes; carbon capture
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MDPI and ACS Style

Casadei, R.; Giacinti Baschetti, M.; Yoo, M.J.; Park, H.B.; Giorgini, L. Pebax® 2533/Graphene Oxide Nanocomposite Membranes for Carbon Capture. Membranes 2020, 10, 188. https://doi.org/10.3390/membranes10080188

AMA Style

Casadei R, Giacinti Baschetti M, Yoo MJ, Park HB, Giorgini L. Pebax® 2533/Graphene Oxide Nanocomposite Membranes for Carbon Capture. Membranes. 2020; 10(8):188. https://doi.org/10.3390/membranes10080188

Chicago/Turabian Style

Casadei, Riccardo; Giacinti Baschetti, Marco; Yoo, Myung J.; Park, Ho B.; Giorgini, Loris. 2020. "Pebax® 2533/Graphene Oxide Nanocomposite Membranes for Carbon Capture" Membranes 10, no. 8: 188. https://doi.org/10.3390/membranes10080188

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