Fabricating Leaf-like hierarchical ZIF-67 as Intra-Mixed matrix membrane microarchitecture for efficient intensification of CO2 separation

Zhao, Qian; Lian, Shaohan; Yang, Ying; Zang, GuoLong; Song, Chunfeng

doi:10.1016/j.seppur.2022.122460

Cited by 15 publications

(15 citation statements)

References 54 publications

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“…The instability of the synthesized structure in this work, when in contact with an aqueous environment and higher temperatures (~90 °C), can be attributed to the adopted proportional ratio in the synthesis (1:8:1000) 27,36,47,50,53 . The high instantaneous concentration of Co 2+ ions and 2-MeIM resulted in rapid nucleation of ZIF-67, forming many tiny nuclei, and limiting crystal growth.…”

Section: Membrane Characterizationmentioning

confidence: 85%

“…The respective values of the specific surface area (BET) for the ZIF-67 crystals showed a high surface area of 1,852 m 2 /g for the structures dried at 25 °C and 1,678 m 2 /g for the crystals dried at 100 °C. The higher surface area exhibited by the ZIF dried at 25°C can be justified by the presence of residual solvent from the synthesis within the structure, resulting in a larger pore volume 44,[46][47][48]50 .…”

Section: Synthesis Of Zif-67 Particlesmentioning

confidence: 99%

“…The high instantaneous concentration of Co 2+ ions and 2-MeIM resulted in rapid nucleation of ZIF-67, forming many tiny nuclei, and limiting crystal growth. This led to the formation of small-sized particles with a high surface area of the nanoparticles and exposed Co-N bonds 27,36,47,50 .…”

Section: Membrane Characterizationmentioning

confidence: 99%

“…Most MOF structures are unstable in aqueous solutions and cannot be used in the preparation of PEBAX ® membranes due to their weak hydrothermal stability. The instability of ZIF-67 in water can be attributed to the specific presence of methylimidazole and Co 2+ ions 27,36,46,47,50 . Furthermore, the hydrophobic surfaces hinder the homogeneous dispersion of the fillers in water, making the fabrication of these membranes even more challenging.…”

Section: Introductionmentioning

confidence: 99%

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Influence of ZIF-67 Drying Temperatures on the Structure and Properties of PEBAX® MH-1657/ZIF-67 Mixed Matrix Membranes for Enhanced CO2/N2 Separation

Pacheco,

Zawadzki,

Eiras

2024

Mat. Res.

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This study synthesized mixed matrix membranes (MMMs) using PEBAX ® MH-1657 and ZIF-67 with varying particle concentrations (1, 3, and 5 wt%) to assess permeability and selectivity. ZIF-67 nanoparticles were prepared using the solvothermal method with methanol and characterized. Permeation tests were conducted at 10 and 15 bar using N 2 and CO 2 . The analysis revealed ZIF-67 particles with an approximate diameter of 280 nm and confirmed characteristic sodalite peaks. The ideal CO 2 /N 2 selectivity reached 67 (CO 2 permeability = 132 ± 3.5 Barrer) at 15 bar. The impact of ZIF-67 varied with pressure and composition; at 10 bar, CO 2 /N 2 selectivity decreased compared to pure PEBAX ® ; however, at 15 bar, the 1 wt% ZIF-67 membrane exhibited superior selectivity, surpassing Robeson's upper bound. The results indicate that ZIF-67 enhances the permeability and selectivity of PEBAX ® , with superior performance observed at lower concentrations.

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Section: Membrane Characterizationmentioning

confidence: 85%

Section: Synthesis Of Zif-67 Particlesmentioning

confidence: 99%

Section: Membrane Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of ZIF-67 Drying Temperatures on the Structure and Properties of PEBAX® MH-1657/ZIF-67 Mixed Matrix Membranes for Enhanced CO2/N2 Separation

Pacheco,

Zawadzki,

Eiras

2024

Mat. Res.

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“…The validity of the phase purity of the ZIF-67 precursor can be corroborated through FT-IR spectra and powder XRD (Figure S2). , After a one-step oxidation, the ZIF-67 precursor was converted to Co 3 O 4 by calcining it, under an Ar atmosphere, at 400 °C for a duration of 2 h. The XRD pattern in Figure S3 indicates that several characteristic peaks situated in 18.9, 31.3, 36.8, 44.8, 59.2, and 65.1° correspond to the (111), (220), (311), (400), (511), and (440) planes of Co 3 O 4 (JCPDS no. 42-1467) .…”

Section: Resultsmentioning

confidence: 99%

Engineering Double Sulfur-Vacancy in CoS_1.097@MoS₂ Core–Shell Heterojunctions for Hydrogen Evolution in a Wide pH Range

Yang,

Wen,

Liu

et al. 2023

Inorg. Chem.

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Heterostructured nanomaterials have arisen as electrocatalysts with great potential for hydrogen evolution reaction (HER), considering their superiority in integrating different active components but are plagued by their insufficient active site density in a wide pH range. In this report, double sulfur-vacancy-decorated CoS 1.097 @MoS 2 core−shell heterojunctions are designed, which contain a primary structure of hollow CoS 1.097 nanocubes and a secondary structure of ultrathin MoS 2 nanosheets. Taking advantage of the core−shell type heterointerfaces and double sulfur-vacancy, the CoS 1.097 @MoS 2 catalyst exhibits pH-universal HER performance, achieving the overpotentials at 10 mA cm −2 of 190, 139, and 220 mV in 0.5 M H 2 SO 4 , 1.0 M KOH, and 1.0 M PBS, respectively. Systematic theoretical results show that the double sulfur-vacancy can endow the CoS 1.097 @MoS 2 core−shell heterojunctions with promoted electron/mass transfer and enhanced reactive kinetics, thus boosting HER performance. This work clearly demonstrates an indispensable role of double sulfur-vacancy in enhancing the electrocatalytic HER performance of core−shell type heterojunctions under a wide pH operating condition.

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The advancements in mixed matrix membranes containing functionalized MOFs and 2D materials for CO2/N2 separation and CO2/CH4 separation

Li,

Kujawa,

Knozowska

et al. 2024

Carbon Capture Science & Technology

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Fabricating Leaf-like hierarchical ZIF-67 as Intra-Mixed matrix membrane microarchitecture for efficient intensification of CO2 separation

Cited by 15 publications

References 54 publications

Influence of ZIF-67 Drying Temperatures on the Structure and Properties of PEBAX® MH-1657/ZIF-67 Mixed Matrix Membranes for Enhanced CO2/N2 Separation

Influence of ZIF-67 Drying Temperatures on the Structure and Properties of PEBAX® MH-1657/ZIF-67 Mixed Matrix Membranes for Enhanced CO2/N2 Separation

Engineering Double Sulfur-Vacancy in CoS_1.097@MoS₂ Core–Shell Heterojunctions for Hydrogen Evolution in a Wide pH Range

The advancements in mixed matrix membranes containing functionalized MOFs and 2D materials for CO2/N2 separation and CO2/CH4 separation

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Fabricating Leaf-like hierarchical ZIF-67 as Intra-Mixed matrix membrane microarchitecture for efficient intensification of CO2 separation

Cited by 15 publications

References 54 publications

Influence of ZIF-67 Drying Temperatures on the Structure and Properties of PEBAX® MH-1657/ZIF-67 Mixed Matrix Membranes for Enhanced CO2/N2 Separation

Influence of ZIF-67 Drying Temperatures on the Structure and Properties of PEBAX® MH-1657/ZIF-67 Mixed Matrix Membranes for Enhanced CO2/N2 Separation

Engineering Double Sulfur-Vacancy in CoS1.097@MoS2 Core–Shell Heterojunctions for Hydrogen Evolution in a Wide pH Range

The advancements in mixed matrix membranes containing functionalized MOFs and 2D materials for CO2/N2 separation and CO2/CH4 separation

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Product

Resources

About

Engineering Double Sulfur-Vacancy in CoS_1.097@MoS₂ Core–Shell Heterojunctions for Hydrogen Evolution in a Wide pH Range