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Shaping 90 wt% NanoMOFs into Robust Multifunctional Aerogels Using Tailored Bio-Based Nanofibrils
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology.ORCID iD: 0000-0002-2489-8439
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology. School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798 Singapore.ORCID iD: 0000-0003-4388-8970
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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. 

Place, publisher, year, edition, pages
Wiley , 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, Binders, Composites, Loading, Materials, Powder, Processes
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-326793DOI: 10.1002/adma.202204800ISI: 000840897400001PubMedID: 35906189Scopus ID: 2-s2.0-85135930335OAI: oai:DiVA.org:kth-326793DiVA, id: diva2:1756758
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QC 20230515

Available from: 2023-05-15 Created: 2023-05-15 Last updated: 2023-05-15Bibliographically approved

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Rostami, JowanBenselfelt, TobiasSellman, Farhiya AlexCiftci, Göksu CinarLarsson, Per A.Tian, WeiqianWågberg, Lars

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Rostami, JowanBenselfelt, TobiasSellman, Farhiya AlexCiftci, Göksu CinarLarsson, Per A.Tian, WeiqianWågberg, Lars
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Fibre TechnologyWallenberg Wood Science CenterFibre- and Polymer Technology
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