Direct imaging of loaded metal-organic framework materials (metal@MOF-5)

Stuart Turner, Oleg I. Lebedev, Felicitas Schröder, Daniel Esken, Roland A. Fischer, Gustaaf Van Tendeloo

Research output: Contribution to journalArticlepeer-review

148 Scopus citations

Abstract

We illustrate the potential of advanced transmission electron microscopy for the characterization of a new class of soft porous materials: metal@Zn 4O(bdc)3 (metal@MOF-5; bdc = 1,4-benzenedicarboxylate). By combining several electron microscopy techniques (transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), electron diffraction (ED), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), and electron tomography) and by carefully reducing the electron dose to avoid beam damage, it is possible to simultaneously characterize the MOF-5 framework material and the loaded metal nanoparticles. We also demonstrate that electron tomography can be used to accurately determine the position and distribution of the particles within the MOF-5 framework. To demonstrate the implementation of these microscopy techniques and what kind of results can be expected, measurements on gas-phase-loaded metal-organic framework materials Ru@MOF-5 and Pd@MOF-5 are presented.

Original languageEnglish
Pages (from-to)5622-5627
Number of pages6
JournalChemistry of Materials
Volume20
Issue number17
DOIs
StatePublished - 9 Sep 2008
Externally publishedYes

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