Enhanced Gas Adsorption in HKUST-1@Chitosan Aerogels, Cryogels, and Xerogels : An Evaluation Study - Université de Lille Accéder directement au contenu
Article Dans Une Revue ACS Applied Materials & Interfaces Année : 2023

Enhanced Gas Adsorption in HKUST-1@Chitosan Aerogels, Cryogels, and Xerogels : An Evaluation Study

Résumé

This study investigates the use of chitosan hydrogel microspheres as a template for growing an extended network of MOF-type HKUST-1. Different drying methods (supercritical CO2, freeze-drying, and vacuum drying) were used to generate three-dimensional polysaccharide nanofibrils embedding MOF nanoclusters. The resulting HKUST-1@Chitosan beads exhibit uniform and stable loadings of HKUST-1 and were used for the adsorption of CO2, CH4, Xe, and Kr. The maximum adsorption capacity of CO2 was found to be 1.98 mmol·g–1 at 298 K and 1 bar, which is significantly higher than those of most MOF-based composite materials. Based on Henry’s constants, thus-prepared HKUST-1@CS beads also exhibit fair selectivity for CO2 over CH4 and Xe over Kr, making them promising candidates for capture and separation applications.
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Dates et versions

hal-04279250 , version 1 (10-11-2023)

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Nisrine Hammi, Mickaele Bonneau, Abdelkrim El Kadib, Susumu Kitagawa, Thierry Loiseau, et al.. Enhanced Gas Adsorption in HKUST-1@Chitosan Aerogels, Cryogels, and Xerogels : An Evaluation Study. ACS Applied Materials & Interfaces, 2023, ACS Applied Materials & Interfaces, ⟨10.1021/acsami.3c10408⟩. ⟨hal-04279250⟩
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