Evaporation-Induced Reticular Growth of UiO-66_NH<sub>2</sub> in Chitosan Films: Adsorption of Iodine
Nisrine Hammi, Mohamed Boundor, Shuo Chen, Nelly Couzon, Abdelkrim El Kadib, Anthony Ferri, Frédérique Pourpoint, Thierry Loiseau, Christophe Volkringer, Sébastien Royer, Jérémy Dhainaut
Abstract
Metal–organic frameworks (MOFs) combined with polymers as hybrid materials offer numerous advantages such as enhanced performances through synergistic effects at their interface. The primary challenge in developing polymer/MOF hybrid matrix films is ensuring optimal dispersion and strong adhesion of crystalline MOFs to the polymer without aggregation, weak interaction, or phase separation. In this study, hierarchically porous UiO-66_NH 2 /chitosan (ZrCSx- f ) films were designed by crystallizing UiO-66_NH 2 within a chitosan (CS) skeleton. The resulting ZrCSx- f films displayed remarkable homogeneity with high loadings of UiO-66_NH 2 crystals, up to 45 wt %, coupled to a high adsorption capacity of iodine in gas phase, up to 317 mg.g –1 .