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Comparative Studies of g-C3N4 and C3N3S3 Organic Semiconductors—Synthesis, Properties, and Application in the Catalytic Oxygen Reduction

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cris.lastimport.scopus2024-02-12T19:39:44Z
dc.abstract.enExfoliated g-C3N4 is a well-known semiconductor utilized in heterogenous photocatalysis and water splitting. An improvement in light harvesting and separation of photogenerated charge carriers may be obtained by polymer doping with sulfur. In this work, we incorporate sulfur into the polymer chain by chemical polymerization of trithiocyanuric acid (C3N3S3H3) to obtain C3N3S3. The XRD measurements and TEM images indicated that C3N3S3, in contrast to g-C3N4, does not exist in the form of a graphitic structure and is not exfoliated into thin lamellas. However, both polymers have similar optical properties and positions of the conduction and valence bands. The comparative studies of electrochemical oxygen reduction and hydrogen evolution indicated that the overpotentials for the two processes were smaller for C3N3S3 than for g-C3N4. The RDE experiments in the oxygen-saturated solutions of 0.1 M NaOH have shown that O2 is electrochemically reduced via the serial pathway with two electrons involved in the first step. The spectroscopic experiments using NBT demonstrated that both polymers reveal high activity in the photocatalytic reduction of oxygen to superoxide anion radical by the photogenerated electrons.
dc.affiliationUniwersytet Warszawski
dc.affiliation.departmentWydział Chemii
dc.affiliation.otherZakład Chemii Fizycznej i Radiochemii
dc.contributor.authorWierzyńska, Ewelina
dc.contributor.authorPisarek, Marcin
dc.contributor.authorŁęcki, Tomasz
dc.contributor.authorSkompska, Magdalena
dc.date.accessioned2024-01-24T19:50:40Z
dc.date.available2024-01-24T19:50:40Z
dc.date.copyright2023-03-08
dc.date.issued2023
dc.description.accesstimeAT_PUBLICATION
dc.description.additionalThis article belongs to the Special Issue Catalytic Nanomaterials: Energy and Environment
dc.description.financeNie dotyczy
dc.description.number6
dc.description.versionFINAL_PUBLISHED
dc.description.volume28
dc.identifier.bibliographicCitationWierzyńska, E.; Pisarek, M.; Łęcki, T.; Skompska, M. Comparative Studies of g-C3N4 and C3N3S3 Organic Semiconductors—Synthesis, Properties, and Application in the Catalytic Oxygen Reduction. Molecules 2023, 28, 2469. https://doi.org/10.3390/molecules28062469
dc.identifier.doi10.3390/MOLECULES28062469
dc.identifier.issn1420-3049
dc.identifier.orcid0000-0003-3401-5246
dc.identifier.orcid0000-0002-7424-5954
dc.identifier.orcid0000-0002-7242-7068
dc.identifier.orcid0000-0002-0711-7207
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/103359
dc.identifier.weblinkhttps://www.mdpi.com/1420-3049/28/6/2469/pdf
dc.languageen
dc.pbn.affiliationchemical sciences
dc.relation.ispartofMolecules
dc.relation.pages2469
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.subject.eng-C3N4
dc.subject.enC3N3S3
dc.subject.enband diagrams
dc.subject.enoxygen reduction
dc.titleComparative Studies of g-C3N4 and C3N3S3 Organic Semiconductors—Synthesis, Properties, and Application in the Catalytic Oxygen Reduction
dc.typeJournalArticle
dspace.entity.typePublication