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Photoelectrochemical Reduction of CO 2 at Poly(4‐Vinylpyridine)‐Stabilized Copper(I) Oxide Semiconductor: Feasibility of Interfacial Decoration with Palladium Cocatalyst

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cris.lastimport.scopus2024-02-12T20:27:47Z
dc.abstract.enPoly(4-vinylpyridine)-modified copper(I) oxide photocathodes, bare or decorated with palladium nanoparticles, can be used for the visible-light-driven selective reduction of CO2, mostly to methanol and carbon monoxide (in the absence of Pd cocatalyst) or formic acid and carbon monoxide (in the presence of Pd cocatalyst). The photocathode materials, which are composed of hierarchically deposited (onto transparent fluorine-doped conducting glass electrode) Cu2O (inner layer) and poly(4-vinylpyridine) (P4VP) polyelectrolyte film (outer-layer), with or without dispersed Pd nanoparticles, have been fabricated and examined using electrochemical methodology, atomic force microscopy, and various spectroscopic techniques, including the Raman approach. While the physicochemical characteristics of Cu2O, including the oxide identity and its semiconducting properties, are not largely affected by the interfacial modification with P4VP, the photostability of the hybrid photocathode is significantly improved. The P4VP-modified Cu2O exhibits reasonable durability during photoelectrochemical reduction of CO2 upon illumination with sunlight in semi-neutral medium (Na2SO4). While Cu2O can be identified using Raman spectroscopy as the sole bulk component of the semiconducting film, the XPS data imply that the Cu2O surface is likely to be partially reduced during prolonged operation. Introduction of palladium cocatalyst seems to improve distribution (collection and transport) of photoelectrons at the photoelectrochemical interface and affects the CO2-electroreduction mechanism.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorSzaniawska, Ewelina
dc.contributor.authorRajeshwar, Krishnan
dc.contributor.authorGorzkowski, Maciej
dc.contributor.authorWadas, Anna
dc.contributor.authorSeta-Wiaderek, Ewelina
dc.contributor.authorRutkowska, Iwona
dc.contributor.authorLewera, Adam
dc.contributor.authorKulesza, Paweł
dc.contributor.authorJurczakowski, Rafał
dc.date.accessioned2024-01-25T16:36:30Z
dc.date.available2024-01-25T16:36:30Z
dc.date.issued2021
dc.description.financePublikacja bezkosztowa
dc.description.number6
dc.description.volume5
dc.identifier.doi10.1002/SOLR.202000705
dc.identifier.issn2367-198X
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/115830
dc.identifier.weblinkhttps://onlinelibrary.wiley.com/doi/pdf/10.1002/solr.202000705
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofSolar RRL
dc.relation.pages2000705
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enactivation
dc.subject.enCO2 reduction
dc.subject.encuprous oxide p-type semiconductors
dc.subject.enpalladium catalysts
dc.subject.enphotoelectrochemistry
dc.subject.enpoly(4-vinylpyridine) films
dc.subject.enstabilization
dc.titlePhotoelectrochemical Reduction of CO 2 at Poly(4‐Vinylpyridine)‐Stabilized Copper(I) Oxide Semiconductor: Feasibility of Interfacial Decoration with Palladium Cocatalyst
dc.typeJournalArticle
dspace.entity.typePublication