Silica-based hierarchical porous Janus microcapsules: construction and support of Au nano-particle catalyst inside

Kong, Xiangming; Wu, Changcheng; Feng, Lei; Qu, Jiao; Liu, Pange; Wang, Xiaomei; Zhang, Xu

doi:10.1039/c7cc03077k

Cited by 37 publications

(25 citation statements)

References 29 publications

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“…[10] Theo penmouthed structures could be beneficial for mass diffusion and full exposure of the inner surfaces,could greatly improve the performance of microcapsules.N evertheless,o nly af ew examples have been reported in which open-mouthed microcapsules are constructed through ah ard-template method to date. [11][12][13] Moreover,t he main drawbacks of this method are the multiple time-consuming steps and harsh conditions for the template-removing.T herefore,the development of facile and novel synthetic procedure to construct monodisperse microcapsules with open-mouthed structures is still ag reat challenge.…”

Section: Metal-organic Framework Based Microcapsulesmentioning

confidence: 99%

Metal–Organic Framework Based Microcapsules

et al. 2018

Angew Chem Int Ed

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MOFs are a type of ideal crystalline material with rigid reticular structures whereas microcapsules are usually prepared from soft mater, such as polymers or supramolecules. The synthesis of MOF-based microcapsules with novel nanostructures at the molecular scale remains a great challenge. Herein, we develop a competitive coordination strategy to synthesize MOF-based microcapsules with novel bowl-like structures. During the competitive coordination process, the infinite structures of MOFs are partially broken by the competitive reagents, thus flexibility is introduced into the rigid skeletons and results in the formation of bowl-like microcapsules. Owing to the unique structure and composition of these nano-structures, the microcapsules exhibit excellent performance and stability in adsorbing and removing iodine for both vapor and solution. This work describes new opportunities in designing MOF-based microcapsules with novel structures.

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Section: Metal-organic Framework Based Microcapsulesmentioning

confidence: 99%

Metal–Organic Framework Based Microcapsules

et al. 2018

Angew Chem Int Ed

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“…The open‐mouthed structures could be beneficial for mass diffusion and full exposure of the inner surfaces, could greatly improve the performance of microcapsules. Nevertheless, only a few examples have been reported in which open‐mouthed microcapsules are constructed through a hard‐template method to date . Moreover, the main drawbacks of this method are the multiple time‐consuming steps and harsh conditions for the template‐removing.…”

Section: Figurementioning

confidence: 99%

Metal–Organic Framework Based Microcapsules

et al. 2018

Angewandte Chemie

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“…Silica hollow structures are rigidly arranged, therefore its shape is often preserved during the preparation and application steps . Besides, high surface area and large pore volume afford high loading capacity, while the mechanical stability protects the encapsulated species from environmental influences …”

Section: Introductionmentioning

confidence: 99%

“…The dimensions of the container in templated hollow structures are dependent on the size of the sacrificial core, and must be compatible with the species that will be encapsulated. Therefore, micro‐sized templates produce hollow silica spheres with inner space that is large enough to host species bigger than a few nanometers, such as enzymes or metal nanoparticles . Additionally, there is free space for admittance and mobility of substrates.…”

Section: Introductionmentioning

confidence: 99%

Magnetically Responsive Silica Hollow Spheres: Straightforward Synthesis of Accessible Micro‐Sized Containers

Deon

Andrade

Nicolodi

et al. 2018

Part & Part Syst Charact

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Silica hollow spheres are obtained as micro‐sized containers with magnetic‐field‐induced mobility. The completely empty hollow spheres are proved accessible with features of confined environment, where an unexpected structured fluorescence emission with large Stokes' shift is observed. This multifunctional system is achieved through a controllable etching of magnetite from magnetite@silica core–shell with hydrochloric acid solution, resulting in silica hollow spheres coupled with remaining magnetite@silica. The increase in the etching time leads to an increase in the proportion of hollow to magnetite‐occupied spheres, and the obtained hollow spheres are completely empty. The remaining magnetite particles have their crystalline structure preserved and even the material with higher proportion of hollow spheres presents high saturation magnetization, which grants response from the whole system induced by a magnetic field. The accessibility of the hollow structure is successfully observed by steady‐state fluorescence spectroscopy using toluene as optical probe.

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Silica-based hierarchical porous Janus microcapsules: construction and support of Au nano-particle catalyst inside

Abstract: A facile and novel method was developed to fabricate silica-based hierarchical porous Janus microcapsules (HPJMs SiO) for catalysis. The resulting Au@HPJMs SiO nanocomposites showed enhanced catalysis, great stability, convenient recovery and reuse without losing catalytic efficiency.

Cited by 37 publications

References 29 publications

Metal–Organic Framework Based Microcapsules

Metal–Organic Framework Based Microcapsules

Metal–Organic Framework Based Microcapsules

Magnetically Responsive Silica Hollow Spheres: Straightforward Synthesis of Accessible Micro‐Sized Containers

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