Journal ArticleDOI
Imparting functionality to a metal–organic framework material by controlled nanoparticle encapsulation
Guang Lu,Shaozhou Li,Zhen Guo,Omar K. Farha,Brad G. Hauser,Xiaoying Qi,Yi Wang,Xin Wang,Sanyang Han,Xiaogang Liu,Xiaogang Liu,Joseph S. DuChene,Hua Zhang,Qichun Zhang,Xiaodong Chen,Jan Ma,Say Chye Joachim Loo,Wei David Wei,Yanhui Yang,Joseph T. Hupp,Fengwei Huo +20 more
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TLDR
A controlled encapsulation strategy is reported that enables surfactant-capped nanostructured objects of various sizes, shapes and compositions to be enshrouded by a zeolitic imidazolate framework (ZIF-8).Abstract:
Microporous metal–organic frameworks (MOFs) that display permanent porosity show great promise for a myriad of purposes. The potential applications of MOFs can be developed further and extended by encapsulating various functional species (for example, nanoparticles) within the frameworks. However, despite increasing numbers of reports of nanoparticle/MOF composites, simultaneously to control the size, composition, dispersed nature, spatial distribution and confinement of the incorporated nanoparticles within MOF matrices remains a significant challenge. Here, we report a controlled encapsulation strategy that enables surfactant-capped nanostructured objects of various sizes, shapes and compositions to be enshrouded by a zeolitic imidazolate framework (ZIF-8). The incorporated nanoparticles are well dispersed and fully confined within the ZIF-8 crystals. This strategy also allows the controlled incorporation of multiple nanoparticles within each ZIF-8 crystallite. The as-prepared nanoparticle/ZIF-8 composites exhibit active (catalytic, magnetic and optical) properties that derive from the nanoparticles as well as molecular sieving and orientation effects that originate from the framework material.read more
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Metal–organic framework composites
Qi-Long Zhu,Qiang Xu +1 more
TL;DR: This review provides an overview of the significant advances in the development of diverse MOF composites reported till now with special emphases on the synergistic effects and applications of the composites.
Journal ArticleDOI
Multifunctional metal–organic framework catalysts: synergistic catalysis and tandem reactions
TL;DR: In this review, the applications of MOFs with multiple active sites in synergistic organic catalysis, photocatalysis and tandem reactions are discussed and proposed mechanisms are presented in detail.
Journal ArticleDOI
Enhancing solar cell efficiency: the search for luminescent materials as spectral converters
TL;DR: This review will survey recent progress in the development of spectral converters, with a particular emphasis on lanthanide-based upconversion, quantum-cutting and down-shifting materials, for PV applications, and present technical challenges that arise in developing cost-effective high-performance solar cells based on these luminescent materials.
Journal ArticleDOI
Metal–organic frameworks meet metal nanoparticles: synergistic effect for enhanced catalysis
TL;DR: An overview of significant progress in the development of MNP/MOF composites, including various preparation strategies and characterization methods as well as catalytic applications is provided, with special emphasis on synergistic effects between the two components that result in an enhanced performance in heterogeneous catalysis.
Journal ArticleDOI
Metal–organic frameworks and their derived nanostructures for electrochemical energy storage and conversion
TL;DR: In this article, a review of the recent progress in fabricating metal-organic frameworks (MOFs) and MOF-derived nanostructures for electrochemical applications is presented.
References
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Reticular synthesis and the design of new materials
Omar M. Yaghi,Michael O'Keeffe,Nathan W. Ockwig,Hee K. Chae,Hee K. Chae,Mohamed Eddaoudi,Jaheon Kim +6 more
TL;DR: This work has shown that highly porous frameworks held together by strong metal–oxygen–carbon bonds and with exceptionally large surface area and capacity for gas storage have been prepared and their pore metrics systematically varied and functionalized.
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Controlled nucleation for the regulation of the particle size in monodisperse gold suspensions
TL;DR: In this article, a series of monodisperse suspensions of the same chemical composition but of rather different particle sizes was used to study particle size dependent phenomena, such as Brownian motion, light scattering, sedimentation and electrophoresis of small particles.
Journal ArticleDOI
Selective gas adsorption and separation in metal–organic frameworks
TL;DR: This critical review starts with a brief introduction to gas separation and purification based on selective adsorption, followed by a review of gas selective adsorbents in rigid and flexible MOFs, and primary relationships between adsorptive properties and framework features are analyzed.
Journal ArticleDOI
Metal–organic framework materials as catalysts
JeongYong Lee,Omar K. Farha,John M. Roberts,Karl A. Scheidt,SonBinh T. Nguyen,Joseph T. Hupp +5 more
TL;DR: A critical review of the emerging field of MOF-based catalysis is presented and examples of catalysis by homogeneous catalysts incorporated as framework struts or cavity modifiers are presented.
Journal ArticleDOI
Shape-Controlled Synthesis of Gold and Silver Nanoparticles
Yugang Sun,Younan Xia +1 more
TL;DR: Monodisperse samples of silver nanocubes were synthesized in large quantities by reducing silver nitrate with ethylene glycol in the presence of poly(vinyl pyrrolidone) (PVP), characterized by a slightly truncated shape bounded by {100, {110}, and {111} facets.