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Liquid- and Gas-Phase Diffusion of Ferrocene in Thin Films of Metal-Organic Frameworks

Zhou, Wencai 1; Wöll, Christof 1; Heinke, Lars 1
1 Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT)

Abstract:

The mass transfer of the guest molecules in nanoporous host materials, in particular in metal-organic frameworks (MOFs), is among the crucial features of their applications. By using thin surface-mounted MOF films in combination with a quartz crystal microbalance (QCM), the diffusion of ferrocene vapor and of ethanolic and hexanic ferrocene solution in HKUST-1 was investigated. For the first time, liquid- and gas-phase diffusion in MOFs was compared directly in the identical sample. The diffusion coefficients are in the same order of magnitude (~10$^{-16}$ m$^{2}$·s$^{-1}$), whereas the diffusion coefficient of ferrocene in the empty framework is roughly 3-times smaller than in the MOF which is filled with ethanol or n-hexane.

Abstract (englisch):

The mass transfer of the guest molecules in nanoporous host materials, in particular in metal-organic frameworks (MOFs), is among the crucial features of their applications. By using thin surface-mounted MOF films in combination with a quartz crystal microbalance (QCM), the diffusion of ferrocene vapor and of ethanolic and hexanic ferrocene solution in HKUST-1 was investigated. For the first time, liquid- and gas-phase diffusion in MOFs was compared directly in the identical sample. The diffusion coefficients are in the same order of magnitude (~10-16 m2·s-1), whereas the diffusion coefficient of ferrocene in the empty framework is roughly 3-times smaller than in the MOF which is filled with ethanol or n-hexane.


Volltext §
DOI: 10.5445/IR/1000048016
Originalveröffentlichung
DOI: 10.3390/ma8063767
Scopus
Zitationen: 33
Web of Science
Zitationen: 33
Dimensions
Zitationen: 33
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 1996-1944
urn:nbn:de:swb:90-480160
KITopen-ID: 1000048016
HGF-Programm 43.22.01 (POF III, LK 01) Functionality by Design
Erschienen in Materials
Verlag MDPI
Band 8
Heft 6
Seiten 3767-3775
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter metal-organic frameworks; diffusion; mass transfer; gas phase; liquid phase
Nachgewiesen in Dimensions
Scopus
Web of Science
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