A robust hollow metal–organic framework with enhanced diffusion for size selective catalysis

Wu, Chunhui; Zhao, Xiaowen; Wang, Dongxu; Si, Xiaomeng; Li, Tao

doi:10.1039/d2sc02838g

Cited by 18 publications

(10 citation statements)

References 67 publications

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“…The low temperature slows down the nucleation, resulting in the oriented growth of MOFs to the octahedral morphology. In contrast, the high temperature speeds up the nucleation, leading to the rapid and unoriented growth of MOFs to the spherical morphology with lower surface energy. , Moreover, the pore architecture of the resultant HPUiO(Ce) is intimately related to the synthetic temperature. In our reaction system, P123 and F127 would comicellize with the merit of their same hydrophobic blocks .…”

Section: Resultsmentioning

confidence: 99%

Temperature-Controlled Synthesis of Trimodal Hierarchically Porous MOFs with Variable Core–Shell Configurations

Chen,

Li,

Yang

et al. 2024

Chem. Mater.

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Despite that multi-modal hierarchically porous metal–organic frameworks (MOFs) are highly desirable due to their capability for the spatial organization of different host reaction, their facile synthesis templated by a single surfactant system is still challenging. Herein, we developed a temperature-controlled strategy to synthesize trimodal hierarchically porous Ce-based UiO-66-type MOFs (THPUiO(Ce)) with tailorable core–shell configurations by using nanoemulsions as soft templates. The hierarchical pore sizes and structures of cores and shells are controllable by facilely manipulating two-step temperatures and the components of the nanoemulsion. For a given nanoemulsion system, when the initial synthetic temperature is higher than the second one, the resultant THPUiO(Ce) is composed of dendritic channels (30–50 nm) in cores and smaller cage-like mesopores (15–20 nm) in shells. Reversely, when the initial synthetic temperature is lower than the second one, the smaller mesopores (around 15 nm) are located in cores surrounded by large pore channels. Similarly, trimodal hierarchically porous bimetallic THPUiO(Ce/Zr) can also be constructed upon extending this temperature-controlled approach, in which the molar ratio of the Zr content could be tuned up to 48%. In virtue of the inhomogeneous nature of THPUiO(Ce), the hollow Ce-based MOFs with mesopores distributed on 60 nm thickness shells can be achieved after the acid treatment of THPUiO(Ce). This facile assembly approach is expected to set a guideline for the construction of hierarchically porous MOFs for potential multicompartmental related applications.

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Section: Resultsmentioning

confidence: 99%

Temperature-Controlled Synthesis of Trimodal Hierarchically Porous MOFs with Variable Core–Shell Configurations

Chen,

Li,

Yang

et al. 2024

Chem. Mater.

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“…Rattle-type nanohybrids with multiple nanoparticles as the cores inside a hollow shell have attracted signicant attention among the complex hollow nanoarchitecture owing to their various advantages, including quicker mass transfer than that of their solid counterparts, appealing architectures, and tunable chemical and physical properties. [62][63][64][65][66][67][68] An early example of rattle-type NPNS@MOF nanohybrids was reported by Wang et al, in which the "ship-around-the-bottle" approach was employed through self-assembly of the Pd precursor and ZIF-8 with the help of a PS template to construct the rattle-type Pd-NPNS@MOF nanostructures (Fig. 11).…”

Section: Rattle-type Npns@mof Nanohybridsmentioning

confidence: 99%

Recent strategies for constructing hierarchical multicomponent nanoparticles/metal–organic framework hybrids and their applications

et al. 2023

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“…[30] Although most frequent supports present no intrinsic activity (metal oxides, polymers), [31,32] synergistic catalytic properties could be obtained by using active solid supports. In this line, metal organic frameworks (MOFs), composed of inorganic nodes bridged by organic linkers, [33] offer broad possibilities: i) their great structural/compositional diversity is favorable for numerous catalytic routes, [1,33,34] ii) their exceptional porosity might provide a confinement effect, wear protection and/or selectivity, [35] and iii) the vast collection of MOFs allows selecting environmentally friendly and biosafe material.…”

Section: Introductionmentioning

confidence: 99%

AuNP/MIL‐88B‐NH₂ Nanocomposite for the Valorization of Nitroarene by Green Catalytic Hydrogenation

Lelouche,

Lemir,

Biglione

et al. 2024

Chemistry A European J

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The efficiency of a catalytic process is assessed based on conversion, yield, and time effectiveness. However, these parameters are insufficient for evaluating environmentally sustainable research. As the world is urged to shift towards green catalysis, additional factors such as reaction media, raw material availability, sustainability, waste minimization and catalyst biosafety, need to be considered to accurately determine the efficacy and sustainability of the process. By combining the high porosity and versatility of metal organic frameworks (MOFs) and the activity of gold nanoparticles (AuNPs), efficient, cyclable and biosafe composite catalysts can be achieved. Thus, a composite based on AuNPs and the nanometric flexible porous iron(III) aminoterephthalate MIL‐88B‐NH2 was successfully synthesized and fully characterized. This nanocomposite was tested as catalyst in the reduction of nitroarenes, which were identified as anthropogenic water pollutants, reaching cyclable high conversion rates at short times for different nitroarenes. Both synthesis and catalytic reactions were performed using green conditions, and even further tested in a time‐optimizing one‐pot synthesis and catalysis experiment. The sustainability and environmental impact of the catalytic conditions were assessed by green metrics.

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A robust hollow metal–organic framework with enhanced diffusion for size selective catalysis

Abstract: Single crystalline (SC) hollow metal-organic frameworks (MOFs) are excellent host materials for molecular and nanoparticle catalysts. However, due to synthetic challenges, chemically robust SC hollow MOFs are rare. This work...

Cited by 18 publications

References 67 publications

Temperature-Controlled Synthesis of Trimodal Hierarchically Porous MOFs with Variable Core–Shell Configurations

Temperature-Controlled Synthesis of Trimodal Hierarchically Porous MOFs with Variable Core–Shell Configurations

Recent strategies for constructing hierarchical multicomponent nanoparticles/metal–organic framework hybrids and their applications

AuNP/MIL‐88B‐NH₂ Nanocomposite for the Valorization of Nitroarene by Green Catalytic Hydrogenation

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A robust hollow metal–organic framework with enhanced diffusion for size selective catalysis

Abstract: Single crystalline (SC) hollow metal-organic frameworks (MOFs) are excellent host materials for molecular and nanoparticle catalysts. However, due to synthetic challenges, chemically robust SC hollow MOFs are rare. This work...

Cited by 18 publications

References 67 publications

Temperature-Controlled Synthesis of Trimodal Hierarchically Porous MOFs with Variable Core–Shell Configurations

Temperature-Controlled Synthesis of Trimodal Hierarchically Porous MOFs with Variable Core–Shell Configurations

Recent strategies for constructing hierarchical multicomponent nanoparticles/metal–organic framework hybrids and their applications

AuNP/MIL‐88B‐NH2 Nanocomposite for the Valorization of Nitroarene by Green Catalytic Hydrogenation

Contact Info

Product

Resources

About

AuNP/MIL‐88B‐NH₂ Nanocomposite for the Valorization of Nitroarene by Green Catalytic Hydrogenation