High performance of PES-GNs MMMs for gas separation and selectivity

Mohamed, Alaa; Yousef, Samy; Tonkonogovas, Andrius; Makarevičius, Vidas; Stankevičius, Arūnas

doi:10.1016/j.arabjc.2021.103565

Cited by 35 publications

(6 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure S1(a) shows FTIR spectra of active layers of PES membrane (M0) and PES/UiO‐66‐(COOH) 2 membranes (M1–M5). For all membranes, the peaks at 664 and 702 cm −1 were found to be related to CH bending vibrations 48‐50 . The peak at 872 cm −1 corresponds to the CC anti‐symmetric ring stretching of epoxides 51 .…”

Section: Resultsmentioning

confidence: 91%

“…For all membranes, the peaks at 664 and 702 cm −1 were found to be related to C H bending vibrations. [48][49][50] The peak at 872 cm −1 corresponds to the C C anti-symmetric ring stretching of epoxides. 51 In addition, the corresponding peak at 1012 cm −1 was related to the symmetric O S O stretching vibrations of sulfone groups.…”

Section: Membrane Morphologymentioning

confidence: 99%

See 1 more Smart Citation

Preparation and performance of UiO‐66‐(COOH)₂‐based mixed matrix membranes for efficient separation of Sr²⁺ ions from aqueous solutions

Chen

Zeng

et al. 2023

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND: Developing new materials for separating Sr 2+ ions from aqueous solutions is significant. Metal-organic frameworks are regarded as excellent adsorption materials due to their high specific surface area and abundant adsorption sites. In this work, a novel UiO-66-(COOH) 2 -based mixed matrix membrane (MMM) was prepared by combining UiO-66-(COOH) 2 with polyethersulfone (PES) for separating Sr 2+ . RESULTS: The MMMs were characterized using scanning electron microscopy, Fourier transform infrared spectroscopy and water contact angle and water flux measurements. Various contents (0-2.5 wt%) of UiO-66-(COOH) 2 were blended into PES membranes. The results showed that incorporating UiO-66-(COOH) 2 significantly increased membrane porosity and water flux, and reduced contact angle. The membrane (M4) that contained 2.0 wt% UiO-66-(COOH) 2 exhibited an excellent morphology and the highest Sr 2+ uptake capacity (111.9 ∼g cm −2 ). Adsorption kinetics and isotherms showed that the nature of the adsorption of the membrane towards Sr 2+ was chemisorption, homogeneous and monolayer. Compared with the adsorption capacity of UiO-66-(COOH) 2 towards Sr 2+ in adsorption packed column, these values of M4 decreased by about 75% during membrane filtration. The rejection performance of MMMs increased with increasing UiO-66-(COOH) 2 content. Breakthrough curves of MMMs were not correlated with flow rate in the range of 10-180 mL h −1 . The presence of Ca 2+ and Mg 2+ ions did not obviously affect the separation of Sr 2+ , but Pb 2+ had a significant influence. Furthermore, after five adsorption-desorption experiments, the regeneration remained at about 95% of initial values. CONCLUSIONS: The MMMs showed good adsorption capacity for Sr 2+ and exhibited favorable reusability and stability.

show abstract

Section: Resultsmentioning

confidence: 91%

Section: Membrane Morphologymentioning

confidence: 99%

Preparation and performance of UiO‐66‐(COOH)₂‐based mixed matrix membranes for efficient separation of Sr²⁺ ions from aqueous solutions

Chen

Zeng

et al. 2023

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…According to the literature, the permeabilities of gases are based on the kinetic diameter of gas molecules, as demonstrated in this experiment where H 2 had the maximum permeability with 30.3 barrer, followed by N 2 (9.54), CO 2 (0.70), and CH 4 (0.32). Mohamed et al [29] focused on the effect of pressure on the permeability of pure gases (H 2 , CO 2 , N 2 , and CH 4 ) at 1-6 bar at 20 • C. The permeability of all gases increased at higher pressure due to the increased driving force for the rapid transport of gases across the membranes. As the pressure increased, the macromolecular segments moved closer to one another.…”

Section: Polymeric Membranesmentioning

confidence: 99%

“…-high flexibility and mechanical strength [29] MOF -High CO 2 adsorption capacities -Great mechanical flexibility and structure tunability -Synthesized easily and rapidly at a low cost [53] Carbon Nanotubes -Excellent mechanical strength -Inherent smoothness of MWCNTs, which allows rapid transport of gases [63] Alumina -Economical and easily obtainable -Toxic-free substance with a high degree of resistance [37]…”

Section: Zeolitementioning

confidence: 99%

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

et al. 2022

View full text Add to dashboard Cite

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.

show abstract

“…Eliminating carbon dioxide (CO 2 ) from natural gas can fulfill CH 4 product criteria, reduce greenhouse gas emissions, boost the calorific value of natural gas burning, and lessen equipment and pipeline corrosion. , Compared with traditional CO 2 separation processes, polymer membrane separation has shown considerable application potential because of its lower operation and maintenance costs, lower energy consumption, smaller size, and higher flexibility. Polymer membranes have been widely explored in gas separation fields, including air separation, gas thickening, and carbon dioxide capture; − however, the trade-off between permeability and selectivity for gas separation has limited their use. Strategies for producing mixed matrix membranes (MMMs) have been proposed to address these issues and further the development of polymer membranes. − …”

Section: Introductionmentioning

confidence: 99%

Building CO₂ Transport Channels in Mixed Matrix Membranes Using SiO₂ Nanosheets

Hou,

Hu,

Ren

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

With the use of the polyether−polyamide block copolymer (Pebax) as a polymer membrane matrix, two-dimensional silicon dioxide (SiO 2 ) nanosheets were obtained through the acid treatment of vermiculite and applied as fillers to prepare mixed matrix membranes (MMMs) with different filler amounts. Building transport channels for CO 2 transfer in the membranes and enhancing the separation performance of CO 2 /CH 4 are feasible owing to the structure of the SiO 2 nanosheets and their propensity for horizontal alignment in the MMMs. The investigation of the characteristics and gas separation capabilities of Pebax−SiO 2 MMMs revealed that the combination of SiO 2 nanosheets considerably improved the separation effect of the MMM S in the CO 2 / CH 4 system. The Pebax−SiO 2 MMMs demonstrated an excellent CO 2 separation efficiency with a CO 2 permeation coefficient of 313.24 barrer and a CO 2 /CH 4 selectivity of 31.26 at the filling quantity of 1.0 wt %.

show abstract

High performance of PES-GNs MMMs for gas separation and selectivity

Cited by 35 publications

References 69 publications

Preparation and performance of UiO‐66‐(COOH)₂‐based mixed matrix membranes for efficient separation of Sr²⁺ ions from aqueous solutions

Preparation and performance of UiO‐66‐(COOH)₂‐based mixed matrix membranes for efficient separation of Sr²⁺ ions from aqueous solutions

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

Building CO₂ Transport Channels in Mixed Matrix Membranes Using SiO₂ Nanosheets

Contact Info

Product

Resources

About

High performance of PES-GNs MMMs for gas separation and selectivity

Cited by 35 publications

References 69 publications

Preparation and performance of UiO‐66‐(COOH)2‐based mixed matrix membranes for efficient separation of Sr2+ ions from aqueous solutions

Preparation and performance of UiO‐66‐(COOH)2‐based mixed matrix membranes for efficient separation of Sr2+ ions from aqueous solutions

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

Building CO2 Transport Channels in Mixed Matrix Membranes Using SiO2 Nanosheets

Contact Info

Product

Resources

About

Preparation and performance of UiO‐66‐(COOH)₂‐based mixed matrix membranes for efficient separation of Sr²⁺ ions from aqueous solutions

Preparation and performance of UiO‐66‐(COOH)₂‐based mixed matrix membranes for efficient separation of Sr²⁺ ions from aqueous solutions

Building CO₂ Transport Channels in Mixed Matrix Membranes Using SiO₂ Nanosheets