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Carbon Dioxide Electroreduction at Highly Porous Nitrogen and Sulfur Co-Doped Iron-Containing Heterogeneous Carbon Gel

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dc.abstract.enThe functionalized carbon nanostructure, nitrogen and sulfur co-doped iron-containing highly porous carbon gel (obtained via carbonization of corresponding organic gel) is considered here as a non-precious metal catalyst for the electroreduction of carbon dioxide in neutral solution (potassium bicarbonate at pH = 6.8). Various electrochemical measurements (performed in distinct modes and under different conditions) have been utilized to comment about the catalyst performance and the reaction mechanism, in particular about the reaction products and the relative contribution from hydrogen evolution. At low overpotentials, the carbon dioxide reduction is favored over the hydrogen evolution reaction. Combination of conventional (stationary) stripping-type and hydrodynamic (rotating ring-disk electrode) voltammetric approaches has been demonstrated to function as an unique electroanalytical tool here. The CO2-reduction products can be identified as adsorbates (oxidative stripping voltammetry) or monitored continuously (electrooxidation) at the Pt ring electrode. Finally, the results of both electrochemical diagnostic and parallel gas chromatographic analytical measurements are consistent with the view that, in the examined range of the potentials, CO is the main CO2-reduction product.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKulesza, Paweł
dc.contributor.authorJanuszewska, Aneta
dc.contributor.authorDembińska, Beata
dc.contributor.authorDobrzeniecka, Anna
dc.contributor.authorKiciński, Wojciech
dc.date.accessioned2024-01-24T19:03:55Z
dc.date.available2024-01-24T19:03:55Z
dc.date.copyright2017-05-13
dc.date.issued2017
dc.description.accesstimeAT_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number7
dc.description.versionFINAL_PUBLISHED
dc.description.volume164
dc.identifier.doi10.1149/2.0721707JES
dc.identifier.issn0013-4651
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/102719
dc.identifier.weblinkhttps://iopscience.iop.org/article/10.1149/2.0721707jes/pdf
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofJournal of the Electrochemical Society
dc.relation.pagesH484-H490
dc.rightsCC-BY-NC-ND
dc.sciencecloudnosend
dc.titleCarbon Dioxide Electroreduction at Highly Porous Nitrogen and Sulfur Co-Doped Iron-Containing Heterogeneous Carbon Gel
dc.typeJournalArticle
dspace.entity.typePublication