Self-supported MOF/cellulose-nanocrystals materials designed from ultrafiltration - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Soft Matter Année : 2023

Self-supported MOF/cellulose-nanocrystals materials designed from ultrafiltration

Résumé

Metal–organic-frameworks (MOFs) are promising materials for addressing critical issues such as petrochemical separation, water purification, energy storage and drug delivery. Their large-scale deployment, however, is hampered by a limited processability due to their powdery nature. Recently, the hybridization of MOFs with biopolymers has emerged as a greener, biocompatible strategy to shape MOFs composites into more processable membranes, films, and porous materials. In this work, cellulose nanocrystals (CNCs) were used in combination with ZIF-8 (a widely used synthetic zeolite) to produce hybrid composites through ultrafiltration. Results showed that small quantities of CNCs (1 to 20 CNC:ZIF-8 volume ratio) were sufficient to form a self-supported, dense deposit with high ZIF-8 loadings. Compared to classical MOF in situ growth strategies, this approach allowed the tuning of the composition of the final nanocomposite by controlling the nature and quantities of particles in the suspension. The fabrication of the deposit was strongly dependent on the physiochemical properties of the suspension, which were fully characterized with a set of complementary techniques, including in situ SAXS. This technique was employed to investigate the filtration process, which exhibited a homogeneous deposition of ZIF-8 particles mediated by CNC self-assembly. Finally, the available pore volume and integrity of the internal porosity of ZIF-8 were characterized by water porosimetry, demonstrating that the presence of CNCs did not alter the properties of the supported ZIF-8.
Fichier principal
Vignette du fichier
DOC-20231020-WA0005..pdf (3.36 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04304711 , version 1 (24-11-2023)

Identifiants

Citer

Lorenzo Metilli, Héloïse Ugo, William Chèvremont, Cyril Picard, Frédéric Pignon. Self-supported MOF/cellulose-nanocrystals materials designed from ultrafiltration. Soft Matter, 2023, 19 (42), pp.8228-8239. ⟨10.1039/D3SM00798G⟩. ⟨hal-04304711⟩
9 Consultations
3 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More