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AuthorGong, Ruihaodc.contributor.author
AuthorMitoraj, Dariuszdc.contributor.author
AuthorLeiter, Robertdc.contributor.author
AuthorMundszinger, Manueldc.contributor.author
AuthorMengele, Alexander K.dc.contributor.author
AuthorKrivtsov, Igordc.contributor.author
AuthorBiskupek, Johannesdc.contributor.author
AuthorKaiser, Utedc.contributor.author
AuthorBeránek, Radimdc.contributor.author
AuthorRau, Svendc.contributor.author
Date of accession2021-08-18T13:45:54Zdc.date.accessioned
Available in OPARU since2021-08-18T13:45:54Zdc.date.available
Date of first publication2021-08-18dc.date.issued
AbstractArrays of single crystal TiO2 rutile nanorods (RNRs) appear highly promising as electroncollecting substrates in hybrid photoanodes as the RNRs offer direct charge carriers transport pathways, contrary to the conventional electrodes prepared from TiO2 powders that suffer from the numerous charge traps at the grain boundaries. However, the specific surface area of the nanorods is highly limited by their smooth morphology, which might be detrimental in view of utilizing the RNR as a substrate for immobilizing other functional materials. In this study, we developed a novel anatase-wrapped RNR (ARNR) material fabricated by a facile seed layer-free hydrothermal method. The ARNR comprises polycrystalline anatase nanoparticles formed on the surface of RNR, resulting in a large surface area that provides more deposition sites compared to the bare nanorods. Herein, we functionalize ARNR and RNR electrodes with polymeric carbon nitride (CNx) coupled with a CoO(OH)x cocatalyst for dioxygen evolution. The anatase wrapping of the rutile nanorod scaffold is found to be crucial for effective deposition of CNx and for improved photoanode operation in visible light-driven (λ > 420 nm) oxygen evolution, yielding a significant enhancement of photocurrent (by the factor of ∼3.7 at 1.23 V vs. RHE) and faradaic efficiency of oxygen evolution (by the factor of ∼2) as compared to photoanodes without anatase interlayer. This study thus highlights the importance of careful interfacial engineering in constructing photoelectrocatalytic systems for solar energy conversion and paves the way for the use of ARNR-based electron collectors in further hybrid and composite photochemical architectures for solar fuel production.dc.description.abstract
Languageendc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseCC BY 4.0 Internationaldc.rights
Link to license texthttps://creativecommons.org/licenses/by/4.0/dc.rights.uri
KeywordAnatase-wrapped rutile nanorodsdc.subject
KeywordElectron collectordc.subject
KeywordHybrid, photoanodedc.subject
KeywordVisible lightdc.subject
KeywordOxygen evolutiondc.subject
Dewey Decimal GroupDDC 540 / Chemistry & allied sciencesdc.subject.ddc
LCSHPhotosynthetic oxygen evolutiondc.subject.lcsh
TitleAnatase-wrapped rutile nanorods as an effective electron collector in hybrid photoanodes for vsible light-driven oxygen evolutiondc.title
Resource typeWissenschaftlicher Artikeldc.type
VersionpublishedVersiondc.description.version
DOIhttp://dx.doi.org/10.18725/OPARU-38572dc.identifier.doi
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-oparu-38648-2dc.identifier.urn
GNDLight Fidelitydc.subject.gnd
FacultyFakultät für Naturwissenschaftenuulm.affiliationGeneral
InstitutionInstitut für Anorganische Chemie I (Materialien und Katalyse)uulm.affiliationSpecific
InstitutionInstitut für Elektrochemieuulm.affiliationSpecific
InstitutionZE Elektronenmikroskopieuulm.affiliationSpecific
Peer reviewjauulm.peerReview
DCMI TypeTextuulm.typeDCMI
CategoryPublikationenuulm.category
DOI of original publication10.3389/fchem.2021.709903dc.relation1.doi
Source - Title of sourceFrontiers in Chemistrysource.title
Source - Place of publicationFrontiers Mediasource.publisher
Source - Volume9source.volume
Source - Year2021source.year
Source - Article number709903source.articleNumber
Source - eISSN2296-2646source.identifier.eissn
FundingTRR 234: Lichtgetriebene molekulare Katalysatoren in hierarchisch strukturierten Materialien: Synthese und mechanistische Studien / DFG [364549901]uulm.funding
FundingVector Stiftunguulm.funding
Bibliographyuulmuulm.bibliographie
Is Supplemented Byhttps://www.frontiersin.org/articles/10.3389/fchem.2021.709903/full#supplementary-materialdc.relation.isSupplementedBy


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