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Performance Fabrics Obtained by In Situ Growth of Metal-Organic Frameworks in Electrospun Fibers

Molco, Maya; Laye, Fabrice; Samperio, Enrique; Ziv Sharabani, Shiran; Fourman, Victor; Sherman, Dov; Tsotsalas, Manuel; Wöll, Christof; Lahann, Joerg; Sitt, Amit

Abstract:
Metal–organic frameworks (MOFs) exhibit an exceptional surface area-to-volume ratio, variable pore sizes, and selective binding, and hence, there is an ongoing effort to advance their processability for broadening their utilization in different applications. In this work, we demonstrate a general scheme for fabricating freestanding MOF-embedded polymeric fibers, in which the fibers themselves act as microreactors for the in situ growth of the MOF crystals. The MOF-embedded fibers are obtained via a two-step process, in which, initially, polymer solutions containing the MOF precursors are electrospun to obtain microfibers, and then, the growth of MOF crystals is initiated and performed via antisolvent-induced crystallization. Using this approach, we demonstrate the fabrication of composite microfibers containing two types of MOFs: copper (II) benzene-1,3,5-tricarboxylic acid (HKUST-1) and zinc (II) 2-methylimidazole (ZIF-8). The MOF crystals grow from the fiber’s core toward its outer rims, leading to exposed MOF crystals that are well rooted within the polymer matrix. The MOF fibers obtained using this method can reach lengths of hundreds of meters and exhibit mechanical strength that allows arranging them into dense, flexible, and highly durable nonwoven meshes. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000131142
Veröffentlicht am 12.04.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1944-8252, 1944-8244
KITopen-ID: 1000131142
Erschienen in ACS applied materials & interfaces
Verlag American Chemical Society (ACS)
Band 13
Heft 10
Seiten 12491-12500
Nachgewiesen in Scopus
Web of Science
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