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Direct Synthesis of ZIF-8 on Transmission Electron Microscopy Grids Allows Structure Analysis and 3D Reconstruction

Hugenschmidt, Milena; Kutonova, Ksenia; Valadez Sánchez, Elvia P.; Moulai, Sarah; Gliemann, Hartmut; Bräse, Stefan; Wöll, Christof; Gerthsen, Dagmar

Abstract:
The first example of layer‐by‐layer growth of a metal–organic framework (MOF) directly on transmission electron microscopy (TEM) grids is described. ZIF‐8 is deposited on thin amorphous carbon films and subjected to a structure analysis by (scanning) TEM ((S)TEM). This method serves as a two‐in‐one synthesis and TEM sample‐preparation technique and allows straightforward analysis of ZIF‐8 crystallites. Artifacts resulting from sample preparation are completely avoided by this approach. The morphological properties, crystal structure, and the chemical composition of the material are investigated with high spatial resolution by a variety of methods of (analytical) electron microscopy. Furthermore, the incorporation of metallic nanoparticles in ZIF‐8 by integrating a corresponding step into the layer‐by‐layer deposition process is examined. The formation of ZIF‐8 crystals on the film proceeds as under the absence of nanoparticle‐forming synthesis steps. However, the nanoparticles rather cover the supporting amorphous carbon film than being incorporated in the ZIF‐8 material. This information cannot be obtained from standard characterization techniques but requires the application of analytical (S)TEM techniques.

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Verlagsausgabe §
DOI: 10.5445/IR/1000125347
Veröffentlicht am 28.10.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Organische Chemie (IOC)
Laboratorium für Elektronenmikroskopie (LEM)
Institut für Funktionelle Grenzflächen (IFG)
Materialwissenschaftliches Zentrum für Energiesysteme (MZE)
Institut für Biologische und Chemische Systeme (IBCS)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 0934-0866, 1521-4117, 1522-936X
KITopen-ID: 1000125347
HGF-Programm 47.02.06 (POF III, LK 01)
Zellpopul.auf Biofunk.Oberflächen IFG
Erschienen in AgBioForum
Seiten Art.-Nr.: 2000209
Vorab online veröffentlicht am 28.09.2020
Nachgewiesen in Scopus
Web of Science
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