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Influence of the Presence of Different Alkali Cations and the Amount of Fe(CN)6 Vacancies on CO2 Adsorption on Copper Hexacyanoferrates

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cris.lastimport.scopus2024-02-12T20:28:14Z
dc.abstract.enThe CO2 adsorption on various Prussian blue analogue hexacyanoferrates was evaluated by thermogravimetric analysis. Compositions of prepared phases were verified by energy-dispersive X-ray spectroscopy, infra-red spectroscopy and powder X-ray diffraction. The influence of different alkali cations in the cubic Fm3m structures was investigated for nominal compositions A2/3Cu[Fe(CN)6]2/3 with A = vacant, Li, Na, K, Rb, Cs. The Rb and Cs compounds show the highest CO2 adsorption per unit cell, ~3.3 molecules of CO2 at 20 °C and 1 bar, while in terms of mmol/g the Na compound exhibits the highest adsorption capability, ~3.8 mmol/g at 20 °C and 1 bar. The fastest adsorption/desorption is exhibited by the A-cation free compound and the Li compound. The influence of the amount of Fe(CN)6 vacancies were assessed by determining the CO2 adsorption capabilities of Cu[Fe(CN)6]1/2 (Fm3m symmetry, nominally 50% vacancies), KCu[Fe(CN)6]3/4 (Fm3m symmetry, nominally 25% vacancies), and CsCu[Fe(CN)6] (I-4m2 symmetry, nominally 0% vacancies). Higher adsorption was, as expected, shown on compounds with higher vacancy concentrations
dc.affiliationUniwersytet Warszawski
dc.contributor.authorWardecki, Dariusz
dc.contributor.authorBodoignet, Loic
dc.contributor.authorJekabs, Grins
dc.contributor.authorSvensson, Gunnar
dc.contributor.authorThoral, Clara
dc.contributor.authorEklöf, Daniel
dc.contributor.authorEriksson, Lars
dc.date.accessioned2024-01-25T04:14:13Z
dc.date.available2024-01-25T04:14:13Z
dc.date.issued2019
dc.description.financeNie dotyczy
dc.description.volume12
dc.identifier.doi10.3390/MA12203371
dc.identifier.issn1996-1944
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/109277
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofMaterials
dc.relation.pages3371
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.encarbon dioxide
dc.subject.enadsorption
dc.subject.enthermogravimetry
dc.subject.enPrussian blue analogue
dc.titleInfluence of the Presence of Different Alkali Cations and the Amount of Fe(CN)6 Vacancies on CO2 Adsorption on Copper Hexacyanoferrates
dc.typeJournalArticle
dspace.entity.typePublication