Seed-mediated growth of MOF-encapsulated Pd@Ag core–shell nanoparticles: toward advanced room temperature nanocatalysts

Chen, Liyu; Huang, Binbin; Qiu, Xuan; Wang, Xi; Luque, Rafael; Li, Yingwei

doi:10.1039/c5sc02925b

Cited by 130 publications

(78 citation statements)

References 54 publications

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“…In this regard, developing biomimetic catalysts through connement of a catalytic species within the cavity of a porous system, mostly referred to as nanoreactors, has proved to be a very promising procedure. 1 To date, various nanoreactors including dendrimers, 2 metal organic frameworks (MOFs), 3,4 mesoporous silica, carbon nanostructures, polymers, 5-10 clays, 11 zeolites 12 etc. have been applied for embedding catalytic species.…”

Section: Introductionmentioning

confidence: 99%

Current advances in the utility of functionalized SBA mesoporous silica for developing encapsulated nanocatalysts: state of the art

Sadjadi

Heravi

2017

RSC Adv.

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The cavities of SBA mesoporous silica materials can be used as nanoreactors for embedding catalytic species such as nanoparticles, complexes and heteropolyacids etc. The encapsulated catalysts are renowned as superior catalytic systems regarding their catalytic activity, selectivity and reusability as well as suppressed leaching. An efficient method to improve the encapsulation of these catalysts, is in creating anchors for capturing catalytic species. It has been performed by functionalization of the surface of SBA mesoporous silica materials with various groups including sulfur, phosphorus and aminebased functional groups. The aim of this article is to review the recent advances (2014)(2015)(2016)(2017) in the field of the utility of functionalized SBA for developing encapsulated catalysts. In most cases the reusability of the catalyst and the leaching of the catalytic active species were discussed to disclose the role of functionalized SBA in heterogenizing and suppressing the leaching. Moreover, to show the superiority of these developed encapsulated catalysts, with a couple of examples we compared their catalytic activities with those of the conventional ones.

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Section: Introductionmentioning

confidence: 99%

Current advances in the utility of functionalized SBA mesoporous silica for developing encapsulated nanocatalysts: state of the art

Sadjadi

Heravi

2017

RSC Adv.

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“…However, to our best knowledge, the preparation of bimetallic core–shell NPs within MOFs has been rarely reported to date . In these reports, a seed‐mediated growth method has been mostly utilized ,,. For example, Xu et al.…”

Section: Methodsmentioning

confidence: 99%

Dopamine‐Directed In‐Situ and One‐Step Synthesis of Au@Ag Core–Shell Nanoparticles Immobilized to a Metal–Organic Framework for Synergistic Catalysis

Huang

et al. 2016

Chemistry An Asian Journal

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We report a facile and general approach to the formation of bimetallic core-shell Au@Ag nanoparticles (NPs) immobilized to metal-organic frameworks (MOFs) via a one-step synthetic route at room temperature. Dopamine (DA) is used as a moderate reductant, which can bind to negatively charged groups of MOFs through electrostatic interaction, and subsequently Au@Ag core-shell NPs are formed by in-situ reduction of the bimetallic Au and Ag precursors step-by-step spontaneously without pre-synthesized seeds. The as-formed Au@Ag core-shell NPs immobilized to MOFs exhibit excellent catalytic activity for the reduction of 4-nitrophenol (4-NPh) by NaBH to 4-aminophenol (4-APh) due to a synergistic effect and are highly stable as demonstrated by recycling experiments.

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“…Besides the incorporation of monometallic and alloying NPs, bimetallic core‐shell NPs have also been encapsulated in MOF pores by our group 43. In a typical synthesis of Pd@Ag‐in‐UiO‐67, Pd precursors were first incorporated into UiO‐67 using a preincorporation strategy, followed by treatment under H 2 at 200°C for 2 h to yield Pd‐in‐UiO‐67, which was subsequently dispersed in DMF.…”

Section: Decoration Of Mofs: Postsynthetic Strategymentioning

confidence: 99%

“… Schematic illustration of the fabrication of Pd@Ag‐in‐UiO67 and its catalytic application in a partial hydrogenation of phenylacetylene to styrene 43…”

Section: Decoration Of Mofs: Postsynthetic Strategymentioning

confidence: 99%

The Road to MOF-Related Functional Materials and Beyond: Desire, Design, Decoration, and Development

Chen

2016

The Chemical Record

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Metal-organic frameworks (MOFs), which are known as a class of porous coordination polymers, have proven to be of great significance to manifold applications, owing to their fascinating topology, ultrahigh porosity, enormous internal surface area, and the combination of being as rigid as inorganic materials and as flexible as organic materials . In this review, we give a concise history of the development of MOFs as functional materials prior to our entry into this area in 2006, then a summary of our road to participate in and extend the outline of the research in MOFs chemistry, as well as the challenge in further designing applicable functional materials. We describe not only the road of evolution from the past, present, and future of this chemistry, but also the road to finalize a functional material from the desire to the design, synthesis, and postmodification of a MOF. Throughout the review, we particularly emphasize the improvements in the application of MOFs as heterogeneous catalysts, such as employing MOFs as one component for the construction of composites, and their extended scope in tough catalytic reactions. Examples of applications in gas storage and separation, small molecular sensing, and our perspectives for future applications triggered by MOFs, are also introduced.

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Seed-mediated growth of MOF-encapsulated Pd@Ag core–shell nanoparticles: toward advanced room temperature nanocatalysts

Abstract: Core–shell Pd@Ag nanoparticles are formed within the pores of MOFs via a seed mediated growth strategy with activated hydrogen atoms as the reducing agent, leading to a family of bimetallic core–shell MOF nanomaterials with excelling catalytic performance in room temperature reactions.

Cited by 130 publications

References 54 publications

Current advances in the utility of functionalized SBA mesoporous silica for developing encapsulated nanocatalysts: state of the art

Current advances in the utility of functionalized SBA mesoporous silica for developing encapsulated nanocatalysts: state of the art

Dopamine‐Directed In‐Situ and One‐Step Synthesis of Au@Ag Core–Shell Nanoparticles Immobilized to a Metal–Organic Framework for Synergistic Catalysis

The Road to MOF-Related Functional Materials and Beyond: Desire, Design, Decoration, and Development

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