Abstract
Grafting of a bio-sourced exopolysaccharide (EPS) using a disulfide ethyl moiety with two ammonium ends as interface on Na + -exchanged montmorillonite (NaMt) turned out to be a “green” route to produce an OH-enriched organoclay with improved affinity towards CO 2 and moisture. Characterization through X-ray diffraction, infrared spectroscopy and thermogravimetric analysis revealed an organized structure with an increased basal spacing that facilitates the diffusion of CO 2 and water molecules and thermal stability up to 190 °C. Measurements through thermal programmed desorption (TPD) showed that at least 16 CO 2 molecules are adsorbed per OH group incorporated via HO:CO 2 interactions between CO 2 molecules and both EPS, and adsorbed water molecules. Adsorbed CO 2 can be completely released below 190 °C. This opens promising prospects for designing respiratory devices that support vegetal-derived moieties that can capture non-stoichiometric amounts of CO 2 in CO 2 -rich gas mixtures and enclosures with non-thermal regeneration.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
