Graphene oxide-containing chitosan@HKUST-1 beads with increased chemical stability for CO<sub>2</sub> capture - Université de Lille
Article Dans Une Revue Materials Today Sustainability Année : 2024

Graphene oxide-containing chitosan@HKUST-1 beads with increased chemical stability for CO2 capture

Résumé

HKUST-1 MOF was crystallized within chitosan matrix to form xerogel beads using an in-situ growth approach. Under mild conditions, CS@HKUST-1 xerogel beads exhibit high specific surface areas (SBET) up to 923 m2 g−1. By further incorporating graphene oxide (GO) to form ternary CS-GO@HKUST-1 xerogel beads, the HKUST-1 MOF structure remained stable for up to two days in a water solution at room temperature, whereas the MOF powder and CS@HKUST-1 xerogel beads underwent significant framework collapse within a day. CO2 adsorption measurements on these xerogel beads also show promising CO2 uptakes, surpassing 2.5 mmol g−1 at 298 K and 1 bar. Moreover, these composites could be regenerated for more than 10 cycles without any loss of quantity adsorbed.
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Dates et versions

hal-04817918 , version 1 (04-12-2024)

Identifiants

Citer

Yassine Khadiri, Alexandre Legrand, Christophe Volkringer, A. Anouar, Sebastien Royer, et al.. Graphene oxide-containing chitosan@HKUST-1 beads with increased chemical stability for CO2 capture. Materials Today Sustainability, 2024, Mater. Today Sustain., 28, ⟨10.1016/j.mtsust.2024.100998⟩. ⟨hal-04817918⟩
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