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Título
Supercritical CO2 encapsulation of bioactive molecules in carboxylate based MOFs
Año del Documento
2019
Editorial
Elsevier Ltd.
Descripción
Producción Científica
Documento Fuente
Journal of CO₂ Utilization 30 (2019) 38–47
Résumé
Caffeine and carvacrol were encapsulated using supercritical CO2 (sc-CO2) impregnation in MOFs, MIL-53(Al)and M g-MOF-74, at different contact times. High additive loadings were achieved, 32.1 and 34.3% for caffeine, and for carvacrol 34.4 and 30.1%, respectively. The sc-CO2 encapsulation was more effective compared to the typical liquid phase encapsulation in ethanol. In fact, the encapsulation in Mg-MOF-74 was only possible in sc-CO2, null loading was observed in the liquid ethanol phase process. The products required no purification and the excess of additives could be reused. In all the studied cases, the materials maintained their crystalline structure and MIL-53(Al) displayed its characteristic flexibility adapting its structure to the additives. The total release of caffeine an carvacrol from Mg-MOF-74 was produced after 5 h in distilled water, while in the case of MIL-53(Al) no release was observed for 10 days.
Palabras Clave
MOF
Encapsulation
Supercritical CO2
Caffeine
Carvacrol
Host-guest interactions
Revisión por pares
SI
Patrocinador
The authors acknowledge financial support from the Aragón Government (DGA, T43-17R) and the European Social Fund. Íñigo Echániz is acknowledged for his help with Raman spectrometer use. Soraya Rodríguez Rojo acknowledges Junta de Castilla y León and FEDER 2014-2020 for her postdoctoral contract under Project VA040U16.
Idioma
eng
Tipo de versión
info:eu-repo/semantics/submittedVersion
Derechos
openAccess
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