A long-lasting TIF-4 MOF glass membrane for selective CO2 separation

Xia, Huanni; Jiang, Hua; Zhang, Yating; Song, Hao; Hu, Jian; Huang, Yun; Li, Yanshuo

doi:10.1016/j.memsci.2022.120611

Cited by 35 publications

(17 citation statements)

References 33 publications

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Section: Gas Separationmentioning

confidence: 65%

“…Similarly, a series of tetrahedral imidazolate framework-4 (TIF-4) glass membranes with different ratios of mixed linkers were prepared and tested for CO 2 /CH 4 separation. 98 The optimal membrane showed a CO 2 /CH 4 selectivity of 30, confirming its defect-free structure. Notably, this membrane also exhibited an excellent long-term stability of up to 10 months, validating its potential for industrial CO 2 separation.…”

Section: Mof Polycrystalline Membranesmentioning

confidence: 65%

“…It is well-known that some MOFs can demonstrate solid-liquidglass transition at different temperatures, which makes it possible to fabricate MOF glass membranes from defective MOF polycrystalline membranes under heating. 19,98 It is worth mentioning that grain boundary defects will be eliminated when the MOF membranes are melted at a high temperature, leading to high-quality membranes with impressive separation performance. For example, a dense and defect-free ZIF-62 glass membrane was successfully prepared by a melt-quenching treatment of a defective ZIF-62 polycrystalline membrane on a porous alumina support.…”

Section: Gas Separationmentioning

confidence: 99%

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Advances in metal–organic framework-based membranes

et al. 2022

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Section: Gas Separationmentioning

confidence: 65%

Section: Mof Polycrystalline Membranesmentioning

confidence: 65%

Section: Gas Separationmentioning

confidence: 99%

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Advances in metal–organic framework-based membranes

et al. 2022

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“…To examine the generality of CP glasses as impermeable barrier layer and protective anticorrosion coating, we further prepared porous α-Al 2 O 3 and Al-supported ZnP-HTr glass films via similar melt-quenching method (Figure S12 in the Supporting Information). The subsequent gas permeation results indicated that ZnP-HTr glass film still held excellent gas barrier ability without any signs of H 2 permeation, while electrochemical corrosion tests (Figure S13 in the Supporting Information) showed a significant decrease in corrosion resistance due to a higher conductivity of ZnP-HTr (1.4 × 10 –6 S cm –1 ) than that of ZnP-H 2 Im (3.3 × 10 –8 S cm –1 ) at low temperature. , In addition, some other recently reported CP glasses, such as ZIF-62 and TIF-4, were also processed into grain-boundary-free membranes exhibiting excellent light gas permselectivity. , Therefore, we concluded that the dense network structure and unique physicochemical properties of ZnP-H 2 Im made it a competent candidate for insulating protective coatings.…”

Section: Resultsmentioning

confidence: 83%

Melt-Quenched Glass Films of Coordination Polymers as Impermeable Barrier Layers and Protective Anticorrosion Coatings

Song

Yan

et al. 2022

Chem. Mater.

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The crystal−liquid−glass phase-transition behavior of coordination polymers (CPs) endows them with unique processing and mechanical properties to prepare functional CP glass films. However, their potential applications are still waiting to be explored. In this study, flawless [Zn(HPO 4 )(H 2 PO 4 ) 2 ](H 2 Im) 2 (abbreviated as ZnP-H 2 Im) glass films are facilely prepared through rapid hot casting coupled with melt quenching. Relying on the grain-boundary-free structure of the film and nonporous structure of the coordination network, undesired diffusion of guest molecules in ZnP-H 2 Im glass films can be effectively prohibited, which is advantageous for gas permeation and liquid leakage prevention. Gas permeation test results indicate that the barrier efficiency of the ZnP-H 2 Im glass film to gas molecules reaches 100%, while polarization curve and EIS results imply that prepared ZnP-H 2 Im glass film possesses excellent corrosion resistance in salt aqueous solution with a protection efficiency up to 99.98% for metallic substrate. Our research demonstrates that CP glasses hold great potential to serve as competent gas barrier layers and corrosion-resistant coatings.

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“…It was confirmed that the in situ melting of ZIF-62 within the polyimide matrix was very effective in reducing meso- and macroscale defects at the MOF/polymer interface, resulting in a 23.7% increase in CO 2 /N 2 selectivity. Except for the a g ZIF-62 and a g (ZIF-62) 0.2 (6FDA-DAM) 0.8 membrane, other MOF glass membranes such as M-P-dmbIm 17 and TIF-4 membranes 18 also showed outstanding CO 2 separation performance.…”

mentioning

confidence: 99%