dc.contributor.author
Lorente, Alejandro
dc.contributor.author
Sturm, Johanna S.
dc.contributor.author
Kleoff, Merlin
dc.contributor.author
Lorenz, Fabio
dc.contributor.author
Voßnacker, Patrick
dc.contributor.author
Wagner, Olaf
dc.contributor.author
Haag, Rainer
dc.contributor.author
Riedel, Sebastian
dc.date.accessioned
2025-03-05T12:16:18Z
dc.date.available
2025-03-05T12:16:18Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/46161
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-45872
dc.description.abstract
Herein hyperbranched polyethyleneimine (hPEI) cryogels are reported for the selective and reversible adsorption of elemental chlorine. The cryogels are prepared in an aqueous solution by crosslinking with glutaraldehyde at subzero temperatures. The final macroporous composites bearing ammonium chloride groups are obtained after freeze-drying. The cryogels CG1[Cl]–CG3[Cl] adsorb chlorine with capacities of 0.22–0.26 g Cl2/g cryogel as an average over three adsorption-desorption cycles. The adsorption process is based on the reversible and selective halogen bonding of chlorides (Cl−) with chlorine (Cl2) forming the corresponding trichloride ([Cl3]−) species, indicated by Raman spectroscopy. The reversibility of chlorine adsorption is shown by applying heat and vacuum to the loaded cryogel CG1[Cl3] releasing 63% of the adsorbed chlorine within 3 h and 72% within 16 h. The unique ability to selectively adsorb chlorine in the presence of other gases is successfully employed for the selective adsorption of chlorine from a gas mixture, potentially enabling the recycling of chlorine from tail gas streams.
en
dc.format.extent
6 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
polychlorides
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften
dc.title
Polyethyleneimine-Based Cryogels Enabling the Selective and Reversible Adsorption of Chlorine
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
2414274
dcterms.bibliographicCitation.doi
10.1002/advs.202414274
dcterms.bibliographicCitation.journaltitle
Advanced Science
dcterms.bibliographicCitation.number
8
dcterms.bibliographicCitation.volume
12
dcterms.bibliographicCitation.url
https://doi.org/10.1002/advs.202414274
refubium.affiliation
Biologie, Chemie, Pharmazie
refubium.affiliation.other
Institut für Chemie und Biochemie

refubium.funding
DEAL Wiley
refubium.note.author
Die Publikation wurde aus Open Access Publikationsgeldern der Freien Universität Berlin gefördert.
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
2198-3844