Hierarchical bicontinuous porosity in metal–organic frameworks templated from functional block co-oligomer micelles

Cao, Shuai; Gody, Guillaume; Zhao, Wei; Perrier, Sébastien; Peng, Xiaoyan; Ducati, Caterina; Zhao, Dongyuan; Cheetham, Anthony K.

doi:10.1039/c3sc51336j

Cited by 128 publications

(82 citation statements)

References 31 publications

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“…2a) confirm the presence of a mesoporous structure. Hirai et al [26], Kim et al [27], and Cao et al [28] also reported the formation of hierarchical pores between aggregated nanoparticles in ZIF materials. Moreover, when the synthesis time was extended, the small ZIF nanocrystals aggregated to form large grains.…”

Section: Morphologies Of Hierarchical Porous Zif-8mentioning

confidence: 99%

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Rapid room-temperature synthesis of hierarchical porous zeolitic imidazolate frameworks with high space-time yield

Duan

Xiao

et al. 2017

Sci. China Mater.

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Hierarchical porous zeolitic imidazolate frameworks (ZIFs) have potential for adsorption, catalysis and chemical sensing applications. Ultrafast synthesis of ZIFs at room temperature and pressure is particularly desirable for large-scale industrial production. Here, we developed a green and versatile method using organic amines as supramolecular templates (organic amine-template) to rapidly synthesize hierarchical porous ZIFs (ZIF-8, ZIF-61 and ZIF-90) at room temperature and pressure. The synthesis time was reduced dramatically to within 1 min, and the resulting ZIFs had multimodal hierarchical porous structures with mesopores/ macropores interconnected with micropores. Notably, the space-time yield (STY) of hierarchical porous ZIF-8 was up to 1.29×10 4 kg m -3 d -1 , which is more than three times higher than that reported using other methods. Furthermore, the morphologies and porosities of the produced ZIFs could be readily tuned by controlling the synthesis time or type of organic amine. The organic amine played two roles in the synthesis: (1) a protonation agent to deprotonate organic ligands, facilitating the formation of ZIF crystals, and (2) an structure directing agent to direct mesopore/macropore formation. The resulting hierarchical porous ZIF-8 exhibited enhanced uptake capacities and diffusion rates for guest molecules relative to its microporous counterpart. This work provides a new direction for the green and efficient synthesis of various hierarchical porous ZIFs with high STYs for a wide range of applications.

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Section: Morphologies Of Hierarchical Porous Zif-8mentioning

confidence: 99%

“…S7, which indicates that the ZIF-8_X1 samples are phase-pure [28]. However, in the ZIF-8_X1 (X = B, C, or D) samples, a characteristic band is observed at around 3400 cm -1 , which can be attributed to the presence of residual solvent (e.g., H 2 O or methanol) in these samples [37].…”

Section: Chemical Purity and Thermal Stability Of Hierarchical Porousmentioning

confidence: 99%

Rapid room-temperature synthesis of hierarchical porous zeolitic imidazolate frameworks with high space-time yield

Duan

Xiao

et al. 2017

Sci. China Mater.

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“…76,77 In addition to the alcohols, crown ethers of hydrophobic alkyls not only could capture metal ions to effectively isolate the innerly embedded metal cations from the organic functionalities and thus to slow down the reaction rate, but also allowed the assembly between surfactants and hybrids, as well as the surrounding coordination expansion. 78,79 A great deal of progress has recently been made in the field of mesoporous metal phosphonates. Unlike mesoporous silicas and carbons, the rational synthesis of metal phosphonate hybrids with uniform mesopore channels is a burgeoning area.…”

Section: Surfactant Assistance For Uniform Mesopore Channelsmentioning

confidence: 99%

Insights into mesoporous metal phosphonate hybrid materials for catalysis

Zhu

Ren

Yuan

2015

Catal. Sci. Technol.

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“…[9][10][11] Metal-organic frameworks (MOFs) are a new class of crystalline materials with well-defined pores, large internal surface areas, and tunable chemical properties. [12][13][14][15][16][17] The porous structure creates the potential to confine MNPs in the matrix of MOF to control their growth to a nanosize region and impede particles agglomeration. [18][19][20][21][22] Moreover, as the easy functionalization and modification of the inner pore surface of MOF is possible via direct-or post-modification, [23][24] these features endow MOF supports to offer some interactions with the embedded MNPs to trigger enhanced stabilization/activity performance.…”

Section: Introductionmentioning

confidence: 99%

One-step encapsulation of Pd nanoparticles in MOFs via a temperature control program

Chen

Liu

et al. 2015

J. Mater. Chem. A

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A facile cooperative in situ metal precursor incorporation and on-site moderate reduction strategy is established for one step encapsulation of Pd nanoparticles in the pore of MOFs, which could not be achieved by a quick heating process.The control over size and location of metal nanoparticles (MNPs) within metal-organic frameworks (MOFs) is achieved in one step through a cooperative in situ incorporation of metal precursor and on-site moderate reduction process, which is operated by temperature programming control. The choice of the operation temperatures is based on the MOF assembly temperature (T1), and an elevated temperature (T2) to elicit the reducibility of DMF solvent to fabricate MNPs. Such a rational design could effectively introduce metal precursors into the pores of MOF and on-site moderately reduce the embedded metal ions to generate tiny MNPs by the penetrated DMF, which could not be achieved by a quick heating process. The proposed methodology has been successfully applied to the one-step fabrication of ultrafine Pd NPs selectively encapsulated inside the pores of UiO-67 without any external reducing agents. The obtained Pd-in-UiO-67 shows superior catalytic activity and selectivity in the hydrogenation of styrene even under room temperature and atmosphere pressure of H2.

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Hierarchical bicontinuous porosity in metal–organic frameworks templated from functional block co-oligomer micelles

Cited by 128 publications

References 31 publications

Rapid room-temperature synthesis of hierarchical porous zeolitic imidazolate frameworks with high space-time yield

Rapid room-temperature synthesis of hierarchical porous zeolitic imidazolate frameworks with high space-time yield

Insights into mesoporous metal phosphonate hybrid materials for catalysis

One-step encapsulation of Pd nanoparticles in MOFs via a temperature control program

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