Hollow Zn/Co Zeolitic Imidazolate Framework (ZIF) and Yolk-Shell Metal@Zn/Co ZIF Nanostructures

Metal–organic frameworks (MOFs) feature a great possibility for a broad spectrum of applications. Hollow MOF structures with tunable porosity and multifunctionality at the nanoscale with beneficial properties are desired as hosts for catalytically active species. Herein, we demonstrate the formation...

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Bibliographic Details
Published in:Chemistry : a European journal Vol. 22; no. 10; pp. 3304 - 3311
Main Authors: Rösler, Christoph, Aijaz, Arshad, Turner, Stuart, Filippousi, Maria, Shahabi, Azar, Xia, Wei, Van Tendeloo, Gustaaf, Muhler, Martin, Fischer, Roland A.
Format: Journal Article
Language:English
Published: Germany Blackwell Publishing Ltd 01.03.2016
Wiley Subscription Services, Inc
Subjects:
Chemistry
Cobalt
Crystals
Dominance
Electron microscopy
Epitaxial growth
Excavation
Metal-organic frameworks
Metals
Nanocrystals
Nanoparticles
Porosity
System effectiveness
Tomography
Transmission electron microscopy
yolk-shell nanostructures
zeolites
Zinc
nanoparticles
zeolites
yolk-shell nanostructures
metal-organic frameworks
ISSN:0947-6539, 1521-3765, 1521-3765
Online Access:Get full text
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Summary:Metal–organic frameworks (MOFs) feature a great possibility for a broad spectrum of applications. Hollow MOF structures with tunable porosity and multifunctionality at the nanoscale with beneficial properties are desired as hosts for catalytically active species. Herein, we demonstrate the formation of well‐defined hollow Zn/Co‐based zeolitic imidazolate frameworks (ZIFs) by use of epitaxial growth of Zn‐MOF (ZIF‐8) on preformed Co‐MOF (ZIF‐67) nanocrystals that involve in situ self‐sacrifice/excavation of the Co‐MOF. Moreover, any type of metal nanoparticles can be accommodated in Zn/Co‐ZIF shells to generate yolk–shell metal@ZIF structures. Transmission electron microscopy and tomography studies revealed the inclusion of these nanoparticles within hollow Zn/Co‐ZIF with dominance of the Zn‐MOF as shell. Our findings lead to a generalization of such hollow systems that are working effectively to other types of ZIFs. An easy and reproducible method to synthesize hollow Zn/Co ZIF nanostructures (see figure; NP = nanoparticle) in a two‐step protocol was developed. The strategy involves the targeted growth of a second ZIF on pre‐synthesized ZIF‐67 crystals with subsequent self‐sacrifice/excavation of ZIF‐67 to give nanocage‐like materials.
Bibliography:ArticleID:CHEM201503619
Flanders (FWO)
Deutsche Forschungsgemeinschaft
istex:F0AF1A5226E456B2C43F9031681E7DFAAD06B117
Cluster of Excellence RESOLV - No. EXC 1069
ark:/67375/WNG-BV13K6M2-H
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0947-6539
1521-3765
1521-3765
DOI:10.1002/chem.201503619