Blend cellulose acetate butyrate/functionalised multi-walled carbon nanotubes mixed matrix membrane for enhanced CO2/N2 separation with kinetic sorption study

Lee, R.J.; Jawad, Zeinab Abbas; Chua, Han Bing; Ahmad, Abdul Latif

doi:10.1016/j.jece.2020.104212

Cited by 18 publications

(9 citation statements)

References 53 publications

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“…In fact, the amorphous structures have better affinity toward CO 2 . Based on the literature, the inverse relation of solubility coefficient with diffusivity coefficient was observed through using a functional group with high molecular weight 50 . Therefore, in the modified MMMs in this work, CO 2 solubility behavior enhanced due to the enhanced polymer chain mobility (by amorphous PPy) that can enlarge the CO 2 permeate capacity spaces and also the presence of nitrogen functional groups to facilitate transportation of CO 2 .…”

Section: Resultsmentioning

confidence: 89%

“…However, the solubility and diffusion rate are considered as important parameters for determining kinetic sorption. Besides, the condensability of gases molecules affected on solution coefficient 50 . The GO‐PPy additives into the PEBA enhance the basic properties of the membrane.…”

Section: Resultsmentioning

confidence: 99%

“…As a result, the separation performance of the modified MMMs improved due to the gas passages created by GO nanosheets. Moreover, the CO 2 solubility coefficient is the main driving force for transportation of CO 2 through the membranes 50 …”

Section: Resultsmentioning

confidence: 99%

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Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO ₂ capture

Asghari

Saadatmandi

Parnian³

2021

Int J Energy Res

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Summary Modified graphene oxide (GO) nanosheets as fillers within poly(ether‐b‐amid) (PEBA) copolymer as matrix were used for mixed matrix membranes (MMMs) fabrication to improve CO2 capture. The GO nanosheets were modified by polypyrrole (PPy) and zinc cations. The former that have conjugated N‐containing groups provided a high degree of affinity toward CO2, and the latter has facilitated the gas molecules transport through the gas channel passages. The different modified GO nanosheets were characterized by HRTEM, FT‐IR, FESEM, XRD, and XPS analyses. Also, the FT‐IR, XRD, AFM, and SEM methods were used for the structural and morphological characterizations of the prepared MMMs with 0.1 wt% of the nanofiller. Gas permeation tests for CH4, N2, and CO2 were then performed for all prepared membranes. Compared to the neat PEBA membrane, the selectivity of both CO2/CH4 and CO2/N2 for PEBA‐GO‐PPy membrane increased up to 62% and 51% and for the PEBA‐GO‐PPy‐Zn membrane increased up to 58% and 56%, respectively. Furthermore, the PEBA‐GO‐PPy‐Zn disclosed a 10% increase in permeability of CO2 than the neat membrane. For PEBA‐GO‐PPy MMM, the permeability of CO2 was 122.4 Barrer, and the selectivity of CO2/CH4 and CO2/N2 was 29.8 and 122.5, respectively. Moreover, the gas separation results for PEBA‐GO‐PPy‐Zn MMM were about 131.8 Barrer for CO2 permeability and 30.7 and 119.2 for CO2/CH4 and CO2/N2 selectivities, respectively. Besides, the CO2/N2 selectivity of PEBA‐GO‐PPy and PEBA‐GO‐PPy‐Zn overcomes the Robeson's upper bound.

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

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Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO ₂ capture

Asghari

Saadatmandi

Parnian³

2021

Int J Energy Res

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“…CO 2 permeability was 369.1 barrer with CO 2 /N 2 selectivity of 110.8 for a hybrid membrane containing 3 weight percent CNT-PEG, surpassing the CO 2 /N 2 Robeson upper limit. Lee et al [97] used the wet phase inversion approach to integrate dispersant-functionalized multiwalled carbon nanotubes (MWCNTs-F) into a polymer matrix of varied molecular weight (70,000 with 12,000, 30,000, and 65,000 Mn). CO 2 had a selectivity of 17.09 for N 2 and permeance of 341.15 for CO 2 .…”

Section: Cnt-polymer Mixed-matrix Membrane In Gas Separationmentioning

confidence: 99%

Incorporating Carbon Nanotubes in Nanocomposite Mixed-Matrix Membranes for Gas Separation: A Review

et al. 2022

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Carbon nanotube (CNT) is a prominent material for gas separation due to its inherent smoothness of walls, allowing rapid transport of gases compared to other inorganic fillers. It also possesses high mechanical strength, enabling membranes to operate at high pressure. Although it has superior properties compared to other inorganic fillers, preparation of CNTs into a polymer matrix remains challenging due to the strong van der Waals forces of CNTs, which lead to agglomeration of CNTs. To utilize the full potential of CNTs, proper dispersion of CNTs must be addressed. In this paper, methods to improve the dispersion of CNTs using functionalization methods were discussed. Fabrication techniques for CNT mixed-matrix membrane (MMM) nanocomposites and their impact on gas separation performance were compared. This paper also reviewed the applications and potential of CNT MMMs in gas separation.

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“…The results showed CO 2 permeability of 2.9 Â 10 4 Barrer and CO 2 /N 2 selectivity of 24.2. In another work, Lee and coauthors 38 investigated the functionalization of MWCNT with betacyclodextrin and its dispersion in cellulose acetate butyrate. The results showed CO 2 permeance 341.15 GPU and CO 2 / N 2 selectivity of 17.09.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric oxygen‐functionalized carbon nanotubes dispersed in polysulfone forCO₂separation

Flores

Figueiredo

2022

J of Applied Polymer Sci

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Carbon dioxide separation from flue gases is an important challenge to be faced. Membrane processes are a promising alternative to increase technical and economical constraints once the development of materials with superior characteristics are attained. Integrally asymmetric mixed matrix membranes (MMMs) were prepared by dry/wet phase inversion process of polysulfone (PSF) containing oxygen‐functionalized multiwalled carbon nanotubes (MWNT‐O). Fourier transform infrared (FTIR) spectroscopy confirmed the presence of MWNT‐O in MMMs. Thermal gravimetric analysis (TGA) showed that MMMs are stable up to 150°C. Photomicrographs from scanning electron microscopy (SEM) revealed that MMMs consist of an asymmetric structure with a skin layer supported on a sponge‐like substructure. The pore size of the support of MMMs increased with MWNT‐O content from 0.4 to 0.8 wt.% and the thickness of the dense layer decreased. However, when the content of MWNT‐O increased to 1 wt.%, the pore size decreased, and the dense layer increased. Therefore, MMMs changed CO2 separation performance. For 1 wt.% MWNT‐O loading compared to the neat polymer, CO2 permeance and CO2/N2 selectivity was increased from 1.5 to 2.7 GPU, and from 9.5 to 14.3, respectively.

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Blend cellulose acetate butyrate/functionalised multi-walled carbon nanotubes mixed matrix membrane for enhanced CO2/N2 separation with kinetic sorption study

Cited by 18 publications

References 53 publications

Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO ₂ capture

Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO ₂ capture

Incorporating Carbon Nanotubes in Nanocomposite Mixed-Matrix Membranes for Gas Separation: A Review

Asymmetric oxygen‐functionalized carbon nanotubes dispersed in polysulfone forCO₂separation

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Blend cellulose acetate butyrate/functionalised multi-walled carbon nanotubes mixed matrix membrane for enhanced CO2/N2 separation with kinetic sorption study

Cited by 18 publications

References 53 publications

Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO 2 capture

Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO 2 capture

Incorporating Carbon Nanotubes in Nanocomposite Mixed-Matrix Membranes for Gas Separation: A Review

Asymmetric oxygen‐functionalized carbon nanotubes dispersed in polysulfone forCO2separation

Contact Info

Product

Resources

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Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO ₂ capture

Polypyrrole‐aided surface decoration of graphene oxide nanosheets as fillers for poly(ether‐ b ‐amid) mixed matrix membranes to enhance CO ₂ capture

Asymmetric oxygen‐functionalized carbon nanotubes dispersed in polysulfone forCO₂separation