Bimetallic Zeolitic Imidazole Frameworks for Improved Stability and Performance of Intrusion–Extrusion Energy Applications

Amayuelas, Eder; Sharma, Sandeep Kumar; Utpalla, Pranav; Mor, Jaideep; Bartolomé, Luis; Carter, Marcus; Trump, Benjamin; Yakovenko, Andrey Andreevich; Zajdel, Pawel; Grosu, Yaroslav

doi:10.1021/acs.jpcc.3c04368

Cited by 10 publications

(3 citation statements)

References 36 publications

(70 reference statements)

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“…In our previous work, we reported the effective modulation of mechanical properties in the {ZIFs + water} system by employing different forms of Co/Zn bimetallic coordination. These results can be supported by the findings of Amayuelas et al employing different synthesis methods. Furthermore, we discussed the mechanistic aspects of water intrusion and escape from the ZIF framework through molecular dynamics simulations .…”

Section: Introductionsupporting

confidence: 80%

Water Intrusion–Extrusion in Metal Azolate Frameworks and Pressure-Induced Supramolecular Isomerism

Fang,

Jiang,

Wang

et al. 2024

Ind. Eng. Chem. Res.

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Revealing the pressure-induced structure evolution of porous materials is fundamentally important for the development of a HLS (porous heterogeneous lyophobic system). Herein, a series of metal azolate frameworks (MAFs) were synthesized via regulating template concentrations and applied in the {MAF + water} HLS to unveil structure−property relationships and understand pressure-induced structure changes. The quasi-static mechanical measurements indicate that the MAF-5 and MAF-6 samples exhibit intrusion pressures of 93.53 and 48.69 MPa, intrusion volumes of 0.14 and 0.55 mL/g, and intrusion energies of 22.54 and 27.73 J/g, respectively. After high-pressure water intrusion, the MAF-5/MAF-6 mixed composite synthesized under a template concentration of 0.38 vol % undergoes phase transfer to a new structure of MAF-32, while other samples evolve into the consistent structure of MAF-5. Rietveld refinement confirmed the distinct coordination modes between Zn and 2-ethylimidazolate in MAF-5 and MAF-6, and realized the pressureinduced positional changes of the ethyl group on the imidazole ring. The present study highlights the structural evolution of MAFs in response to high-pressure water intrusion and offers insights into the rational design of HLSs and tuning the topological structures of porous coordination polymers in potential applications.

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Section: Introductionsupporting

confidence: 80%

Water Intrusion–Extrusion in Metal Azolate Frameworks and Pressure-Induced Supramolecular Isomerism

Fang,

Jiang,

Wang

et al. 2024

Ind. Eng. Chem. Res.

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“…synthesized continuous HKUST-1 membrane with the “twin copper source” growth method, which is the first MOF membrane with gas separation performance exceeding Knudsen diffusion behavior . In recent years, MOF membranes have received widespread attention in the field of highly selective gas separation. − The incorporation of additional metal ions into the frameworks to construct mixed-metal MOFs materials is a common method for regulating the properties of MOFs. − Indeed, it has been proven that mixed-metal MOF membranes show better gas separation performance than the monometallic MOF membranes because of the introduction of the additional metal. − For instance, Jeong et al constructed the mixed-metal CoZn-ZIF-8 membrane and demonstrated significant improvement in C 3 H 6 /C 3 H 8 separation, which is attributed to the incorporation of Co into the framework that induces smaller effective aperture for the CoZn-ZIF-8 membrane due to its enhanced bond stiffness . Wang et al successfully synthesized a series of mixed-metal Zn (100‑ x ) Co x -ZIF membranes by current driven synthesis method.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Mixed-Metal ZIF-7 Membrane by the Self-Conversion of Hydroxy Double Salts for Gas Separation

Ma,

et al. 2024

Ind. Eng. Chem. Res.

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Achieving the desired separation performance in membrane-based gas separation demands intricate manipulation of molecular structures. Constructing mixed-metal metal organic framework (MOF) membranes is an effective strategy to improve the gas separation performance due to the outstanding properties of mixed-metal MOFs materials in adsorption and separation fields. Herein, we proposed a novel solvent-vapor assisted spaceconfined transformation (SAST) strategy to fabricate a dense mixed-metal ZIF-7 membrane for the separation of H 2 over CO 2 , N 2 , and CH 4 . The fabrication process includes the initial growth of hydroxy double salts (HDSs) on the tube, followed by the deposition of bIm ligand on the surface of HDSs intermediate and then the growth of the mixed-metal ZIF-7 membrane in the confined space under DMF solvent vapor. Compared to the traditional solvothermal methods, this synthesis process significantly reduces the usage of toxic organic solvents, thereby contributing to a more environmentally sustainable approach. The resulting mixed-metal ZIF-7 membrane shows outstanding gas separation performance with the H 2 /CO 2 ideal separation selectivity as high as 42.8 and the H 2 permeance of 1.89 × 10 −7 mol•m −2 •s −1 •Pa −1 . This method holds substantial potential in the production of mixed-metal MOF membrane for extensive applications in molecular sieving on a large-scale.

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“…Regrettably, only very few porous materials exhibit this nonhysteretic behavior with water or aqueous solutions: mainly zeolites, − but also some MOFs . Therefore, in order to advance HLS applications, it is crucial to develop new porous materials with high stability or strategies for tuning the intrusion–extrusion hysteresis. − …”

Section: Introductionmentioning

confidence: 99%

Partial Water Intrusion and Extrusion in Hydrophobic Nanopores for Thermomechanical Energy Dissipation

Paulo,

Bartolomé,

Bondarchuk

et al. 2024

J. Phys. Chem. C

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Forced wetting (intrusion) and spontaneous dewetting (extrusion) of hydrophobic/lyophobic nanoporous materials by water/nonwetting liquid are of great importance for a broad span of technological and natural systems such as shock-absorbers, molecular springs, separation, chromatography, ion channels, nanofluidics, and many more. In most of these cases, the process of intrusion-extrusion is not complete due to the stochastic nature of external stimuli under realistic operational conditions. However, understanding of these partial processes is limited, as most of the works are focused on an idealized complete intrusion-extrusion cycle. In this work, we show an experimental system operating under partial intrusion/extrusion conditions and present a simple model that captures its main features. We rationalize these operational conditions in terms of the pore entrance and cavity size distributions of the material, which control the range of intrusion/extrusion pressures.

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Bimetallic Zeolitic Imidazole Frameworks for Improved Stability and Performance of Intrusion–Extrusion Energy Applications

Cited by 10 publications

References 36 publications

Water Intrusion–Extrusion in Metal Azolate Frameworks and Pressure-Induced Supramolecular Isomerism

Water Intrusion–Extrusion in Metal Azolate Frameworks and Pressure-Induced Supramolecular Isomerism

Fabrication of Mixed-Metal ZIF-7 Membrane by the Self-Conversion of Hydroxy Double Salts for Gas Separation

Partial Water Intrusion and Extrusion in Hydrophobic Nanopores for Thermomechanical Energy Dissipation

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