Shaping 90 wt% NanoMOFs into Robust Multifunctional Aerogels Using Tailored Bio-Based NanofibrilsShow others and affiliations
2022 (English)In: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 34, no 38, article id 2204800Article in journal (Refereed) Published
Abstract [en]
Metal–organic frameworks (MOFs) are hybrid porous crystalline networks with tunable chemical and structural properties. However, their excellent potential is limited in practical applications by their hard-to-shape powder form, making it challenging to assemble MOFs into macroscopic composites with mechanical integrity. While a binder matrix enables hybrid materials, such materials have a limited MOF content and thus limited functionality. To overcome this challenge, nanoMOFs are combined with tailored same-charge high-aspect-ratio cellulose nanofibrils (CNFs) to manufacture robust, wet-stable, and multifunctional MOF-based aerogels with 90 wt% nanoMOF loading. The porous aerogel architectures show excellent potential for practical applications such as efficient water purification, CO2 and CH4 gas adsorption and separation, and fire-safe insulation. Moreover, a one-step carbonization process enables these aerogels as effective structural energy-storage electrodes. This work exhibits the unique ability of high-aspect-ratio CNFs to bind large amounts of nanoMOFs in structured materials with outstanding mechanical integrity—a quality that is preserved even after carbonization. The demonstrated process is simple and fully discloses the intrinsic potential of the nanoMOFs, resulting in synergetic properties not found in the components alone, thus paving the way for MOFs in macroscopic multifunctional composites. © 2022 The Authors.
Place, publisher, year, edition, pages
John Wiley and Sons Inc , 2022. Vol. 34, no 38, article id 2204800
Keywords [en]
aerogels, cellulose nanofibrils, flame retardancy, gas adsorption and separation, metal–organic frameworks, supercapacitors, water purification, Aspect ratio, Carbonization, Crystalline materials, Gas adsorption, Hybrid materials, Nanocellulose, Nanofibers, Supercapacitor, Bio-based, Crystalline networks, Flame-retardancy, Gas adsorption and separations, High aspect ratio, Mechanical integrity, Metalorganic frameworks (MOFs), Nano-fibrils
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-60031DOI: 10.1002/adma.202204800Scopus ID: 2-s2.0-85135930335OAI: oai:DiVA.org:ri-60031DiVA, id: diva2:1701256
Note
Funding details: 2018‐04407, 803220; Funding details: European Research Council, ERC; Funding details: Knut och Alice Wallenbergs Stiftelse; Funding details: Vetenskapsrådet, VR; Funding details: Wallenberg Wood Science Center, WWSC; Funding text 1: J.R. acknowledges VR, the Swedish Research Council, for financial support, and L.W. acknowledges the Knut and Alice Wallenberg Research Foundation, via Wallenberg Wood Science Center, for financial support. C.A. acknowledges the support of the European Research Council (ERC) under European Union's Horizon 2020 Program (Grant Agreement No. 803220, TEMPORE) and F.A. acknowledges the support from Swedish Research Council, grant no. 2018‐04407. The authors acknowledge the technical assistance of Dr. Cheng Choo Lee at the Umeå Core Facility Electron Microscopy, Umeå University and the National Microscopy Infrastructure, and Dr. Andrey Shchukarev at the XPS Platform at Department of Chemistry, Umeå University. Giuseppina Iacono and Dr. Alessandra D'Anna are also acknowledged for their contributions to the SEM imaging on cone calorimetry residues and TGA experiments and XRD experiments, respectively. The authors would also like to thank Henrik Kjellgren from Nordic Paper AB for generously donating pulp fibers and Christy Hayhoe at Proper English AB for proofreading the language of the manuscript.
2022-10-052022-10-052023-07-06Bibliographically approved