Structured Growth of Metal–Organic Framework MIL-53(Al) from Solid Aluminum Carbide Precursor

Moran, Colton M.; Joshi, Jayraj N.; Marti, Robert M.; Hayes, Sophia E.; Walton, Krista S.

doi:10.1021/jacs.8b04369

Cited by 41 publications

(30 citation statements)

References 51 publications

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“…Al 2p high resolution scan stands two peaks; the former one at 73.3 eV corresponds to the octahedral AlO 4 (OH) 2 clusters, while the later one at 73.8 eV is assigned to a produced byproduct of hydroxide or aluminum oxide. [35] In addition, two peaks are observed from the O 1s spectra, where the peak at 531.9 eV corresponds to the coordination of the Al cations with the oxygen anion of the linker, and the other one at 532.2 eV arises from the presence of OCO. [28,35] Contact angle measurements revealed a water contact angle of <2° for MIL-53(Al)-NH 2 FMMM indicating its superhydrophilicity.…”

Section: Synthesis Of Fmmmmentioning

confidence: 99%

“…[35] In addition, two peaks are observed from the O 1s spectra, where the peak at 531.9 eV corresponds to the coordination of the Al cations with the oxygen anion of the linker, and the other one at 532.2 eV arises from the presence of OCO. [28,35] Contact angle measurements revealed a water contact angle of <2° for MIL-53(Al)-NH 2 FMMM indicating its superhydrophilicity. The dynamic wetting behavior of individual membranes was visualized by a high-speed camera.…”

Section: Synthesis Of Fmmmmentioning

confidence: 99%

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Freestanding Metal Organic Framework‐Based Multifunctional Membranes Fabricated via Pseudomorphic Replication toward Liquid‐ and Gas‐Hazards Abatement

Dai

Pradeep

Zhu

et al. 2021

Adv Materials Inter

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range of appealing properties are observed on MOFs, such as high surface areas and porosity, ordered open channels, and tunable functionalities, making them attractive for applications in gas storage, [2,3] separation, [4,5] catalysis, [6,7] sensing, [8] and environmental decontamination. [9] However, their utilization in above applications is limited due to the brittle nature in powder phase. As a result, further handling and processing is required for industrial applications. As reported in literature, MOF-membrane integration is a robust strategy to extend the exceptional properties of MOFs by providing them the required structural integrity, this can be achieved by growing MOF layers on substrates [10][11][12] or by incorporating MOF crystals into mixed matrix membranes (MMMs). [13][14][15] The later approach is the most attractive scenario, because high MOF loadings can be achieved. The MMMs show marked advantages to the single component, since MOF crystals provide rich molecular sieving sites and the polymeric membrane substrates are easy to handle and process.While the MOF-based MMMs exhibit excellent priorities, there still remain limitations on the mixed-matrix approach: [14,16] i) trade-offs between MOF loadings and membrane functions. Specifically, high MOF loadings generally increase the possibility of phase separation, decreasing strength, and creating cracks, while low loadings usually result in insufficient selectivity due to the reduced number of active sites; and ii) the existence of by-pass caused by interfacial voids between polymers and MOFs would inevitably hinder the real separation performance, which leads to an unpredictable and low selectivity.In order to eliminate these concerns, we propose a robust methodology to produce substrate-free MOF membranes via a pseudomorphic replication synthesis route. Pseudomorphic replication, stemmed from the natural pseudomorphic mineral replacement phenomenon, had been initially introduced by Kitagawa and his coworkers concerning shaped and assembled synthesis of MOF structures. [17] Through the coordination-driven pseudomorphic replication of MOF conversion, precise spatial localization of MOF crystal crystallization can be achieved. [18] Additionally, it was observed that the MOF replica would retain the original physical structure, including shapes and dimensions from its parent phase. Inspired by Metal organic framework (MOF)-based adsorptive membranes are attractive materials in high flux separation and/or in abatement of hazardous materials. However, fabrication of continuous MOF membrane with ultra-high loading and anti-solvent property is a challenging task. Here, the authors report a coordination replication synthetic approach via a morphological replacement procedure that employs pre-shaped Al 2 O 3 microfiltration membrane to produce freestanding MOF multifunctional membrane (FMMMs). The authors achieve precise control of crystal size, morphology, and orientation on the FMMMs. Moreover, the intrinsic porous structure inherited from Al 2 O 3 p...

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Section: Synthesis Of Fmmmmentioning

confidence: 99%

Section: Synthesis Of Fmmmmentioning

confidence: 99%

Freestanding Metal Organic Framework‐Based Multifunctional Membranes Fabricated via Pseudomorphic Replication toward Liquid‐ and Gas‐Hazards Abatement

Dai

Pradeep

Zhu

et al. 2021

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…Similar, mild synthesis conditions (≤100 °C) have been demonstrated for other Al‐MOFs, thereby avoiding pressure build‐up. Also, synthesis methods based on extrusion, microwave‐assisted heating and starting from insoluble metal ion sources have been reported . For the further scale‐up of these MOFs, it can be desirable to move to continuous production in flow reactors as multiplying the output volume through multiple tubes in parallel enables more control compared with larger dimension batch reactors .…”

Section: Introductionmentioning

confidence: 99%

Aqueous Flow Reactor and Vapour‐Assisted Synthesis of Aluminium Dicarboxylate Metal–Organic Frameworks with Tuneable Water Sorption Properties

Stassin

Waitschat

Heidenreich

et al. 2020

Chemistry A European J

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Energy‐efficient indoors temperature and humidity control can be realised by using the reversible adsorption and desorption of water in porous materials. Stable microporous aluminium‐based metal–organic frameworks (MOFs) present promising water sorption properties for this goal. The development of synthesis routes that make use of available and affordable building blocks and avoid the use of organic solvents is crucial to advance this field. In this work, two scalable synthesis routes under mild reaction conditions were developed for aluminium‐based MOFs: (1) in aqueous solutions using a continuous‐flow reactor and (2) through the vapour‐assisted conversion of solid precursors. Fumaric acid, its methylated analogue mesaconic acid, as well as mixtures of the two were used as linkers to obtain polymorph materials with tuneable water sorption properties. The synthesis conditions determine the crystal structure and either the MIL‐53 or MIL‐68 type structure with square‐grid or kagome‐grid topology, respectively, is formed. Fine‐tuning resulted in new MOF materials thus far inaccessible through conventional synthesis routes. Furthermore, by varying the linker ratio, the water sorption properties can be continuously adjusted while retaining the sigmoidal isotherm shape advantageous for heat transformation and room climatisation applications.

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“…The fabricated hierarchically structured Ni-BDC@NiS as a synergistic electrocatalyst showed high activity toward the OER. [30] While Materials of Institute Lavoisier (MIL) structures MIL-53(X), constructed with X = Fe, Al, Co, Ni, have been used for the OER, [31][32][33][34] to the best of our knowledge, CuO@MIL-53(Cu) has not been evaluated for this electrochemical process. In the work reported here, CuO@MIL-53(Cu) was synthesized using a hydrothermal approach with 1,4-bezenedicarboxylic acid as organic precursor and copper ions, and assessed for its efficiency for the OER in alkaline medium.…”

Section: Introductionmentioning

confidence: 99%

Copper‐based metal–organic framework decorated by CuO hair‐like nanostructures: Electrocatalyst for oxygen evolution reaction

Amiri

Tofighi

Khodayari

et al. 2020

Applied Organom Chemis

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We report a Cu‐based metal–organic framework (MOF) decorated by CuO nanostructures as an efficient catalyst for the oxygen evolution reaction (OER). MIL‐53(Cu) was synthesized by a hydrothermal approach using 1,4‐bezenedicarboxylic acid as organic precursor and further annealed at 300°C to form CuO nanostructures on its surface. The produced electrocatalyst, CuO@MIL‐53(Cu), was characterized using various techniques. Under alkaline conditions, the developed electrocatalyst exhibited an overpotential of 801 and 336 mV versus RHE at 10 and 1 mA cm−2, respectively. The reproducibility of the catalytic performance was validated using several electrodes. It was confirmed that the CuO hair‐like nanostructures grown on MIL‐53(Cu) using thermal treatment exhibit high OER activity, good kinetics and durability. CuO@MIL‐53(Cu) is an economic noble‐metal‐free OER electrocatalyst. It has potential for application as anode material for sustainable energy technologies like batteries, fuel cells and water electrolysis.

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Structured Growth of Metal–Organic Framework MIL-53(Al) from Solid Aluminum Carbide Precursor

Cited by 41 publications

References 51 publications

Freestanding Metal Organic Framework‐Based Multifunctional Membranes Fabricated via Pseudomorphic Replication toward Liquid‐ and Gas‐Hazards Abatement

Freestanding Metal Organic Framework‐Based Multifunctional Membranes Fabricated via Pseudomorphic Replication toward Liquid‐ and Gas‐Hazards Abatement

Aqueous Flow Reactor and Vapour‐Assisted Synthesis of Aluminium Dicarboxylate Metal–Organic Frameworks with Tuneable Water Sorption Properties

Copper‐based metal–organic framework decorated by CuO hair‐like nanostructures: Electrocatalyst for oxygen evolution reaction

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