Cyclodextrin-based supramolecular low melting mixtures: efficient absorbents for volatile organic compounds abatement - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Environmental Science and Pollution Research Année : 2022

Cyclodextrin-based supramolecular low melting mixtures: efficient absorbents for volatile organic compounds abatement

Résumé

Cyclodextrins (CDs) and deep eutectic solvents (DESs) are emerging absorbent materials for the removal of volatile organic compounds (VOCs). In this study, we have used combination of modified CDs and levulinic acid to form four DESs analogs, referred to as supramolecular low-melting mixtures (LMMs), to study their absorption characteristics towards five VOCs, namely acetaldehyde, butanone, dichloromethane, thiophene, and toluene. The supramolecular LMMs showed up to 250-fold reduction in the vapor-liquid partition coefficients compared to water. The overall absorption capacity found to be synergistic and seemed to be dictated by the hydrophobicity of the VOCs. Toluene and dichloromethane were absorbed at 99 and 95% by the supramolecular LMMs, respectively, even at higher concentrations, with a linear relationship between the concentration and absorption capacity. The LMMs also retained their absorption capacities even after five absorption/desorption cycles.

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hal-04242270 , version 1 (14-10-2023)

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Somenath Panda, Sophie Fourmentin. Cyclodextrin-based supramolecular low melting mixtures: efficient absorbents for volatile organic compounds abatement. Environmental Science and Pollution Research, 2022, 29 (1), pp.264-270. ⟨10.1007/s11356-021-16279-y⟩. ⟨hal-04242270⟩
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