Alginate versus Chitosan for Templating Growth and Shaping HKUST‐1 as Porous CO2‐Adsorbent Beads DOI Open Access

Yassine Khadiri,

Aïcha Anouar, Christophe Volkringer

и другие.

ChemistrySelect, Год журнала: 2025, Номер 10(5)

Опубликована: Фев. 1, 2025

Abstract This study aims at elucidating the role of polysaccharide skeleton (alginate versus chitosan) during growth and shaping HKUST‐1 as porous beads. Although two biopolymers afford an open hydrogel network, freeze‐drying step was crucial with water medium being inappropriate to preserve crystalline framework HKUST‐1. Alternatively, drying in ethanol circumvented this drawback by keeping intact structure However, a contrasting behavior observed resulting polysaccharide@HKUST‐1 beads, grown alginate underwent dramatic collapse, whereas self‐standing, microspheres could be obtained using chitosan templating route. The chitosan@HKUST‐1 cryogel displays enhanced CO 2 capture (2.67 mmol.g −1 ) compared its analogs shaped alginate, making consequently better option for structuring MOF‐based adsorbents.

Язык: Английский

Alginate versus Chitosan for Templating Growth and Shaping HKUST‐1 as Porous CO2‐Adsorbent Beads DOI Open Access

Yassine Khadiri,

Aïcha Anouar, Christophe Volkringer

и другие.

ChemistrySelect, Год журнала: 2025, Номер 10(5)

Опубликована: Фев. 1, 2025

Abstract This study aims at elucidating the role of polysaccharide skeleton (alginate versus chitosan) during growth and shaping HKUST‐1 as porous beads. Although two biopolymers afford an open hydrogel network, freeze‐drying step was crucial with water medium being inappropriate to preserve crystalline framework HKUST‐1. Alternatively, drying in ethanol circumvented this drawback by keeping intact structure However, a contrasting behavior observed resulting polysaccharide@HKUST‐1 beads, grown alginate underwent dramatic collapse, whereas self‐standing, microspheres could be obtained using chitosan templating route. The chitosan@HKUST‐1 cryogel displays enhanced CO 2 capture (2.67 mmol.g −1 ) compared its analogs shaped alginate, making consequently better option for structuring MOF‐based adsorbents.

Язык: Английский

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