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Choline chloride-formic acid mixture as a medium for the reduction of pertechnetates – electrochemical and spectroscopic studies

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cris.lastimport.scopus2024-02-12T19:41:07Z
dc.abstract.enPhysicochemical properties of the choline chloride (ChCl) and formic acid (FA) mixture (1:2 molar ratio) have been studied over a broad range of temperatures (-140°C – 60 °C). Differential scanning calorimetry has shown that the examined system remains in liquid state at very low temperatures - a glass transition is observed in the range of -125 °C to - 90 °C. The kinematic viscosity, ionic conductivity and the width of the electrochemical window determined for this system revealed its beneficial electrochemical properties. This indicates suitability of ChCl:FA electrolytes in electrochemical measurements. In this non-aqueous electrolyte, the electrochemical reduction of Tc(VII) ions has been studied for the first time. Cyclic voltammetry and chronopotentiometry experiments revealed that the electroreduction of the pertechnetates is a multi- path process which leads to formation of a Tc(IV) ionic form. X-ray absorption spectroscopy of the latter revealed its structure as a TcCl62- complex
dc.affiliationUniwersytet Warszawski
dc.contributor.authorChotkowski, Maciej
dc.contributor.authorCzerwinski, Kenneth R.
dc.contributor.authorGaona, Xavier
dc.contributor.authorDardenne, Kathy
dc.contributor.authorDiBlasi, Nicole Ann
dc.contributor.authorPołomski, Damian
dc.date.accessioned2024-01-24T19:23:59Z
dc.date.available2024-01-24T19:23:59Z
dc.date.issued2023
dc.description.financePublikacja bezkosztowa
dc.description.number3
dc.description.volume25
dc.identifier.doi10.1039/D2CP05398E
dc.identifier.issn1463-9076
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/103031
dc.identifier.weblinkhttp://pubs.rsc.org/en/content/articlepdf/2022/CP/D2CP05398E
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofPhysical Chemistry Chemical Physics
dc.relation.pages1819-1826
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleCholine chloride-formic acid mixture as a medium for the reduction of pertechnetates – electrochemical and spectroscopic studies
dc.typeJournalArticle
dspace.entity.typePublication