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dc.contributor.authorJiang, Zhifeng
dc.contributor.authorWan, Weiming
dc.contributor.authorLi, Huaming
dc.contributor.authorYuan, Shouqi
dc.contributor.authorZhao, Huijun
dc.contributor.authorWong, Po Keung
dc.date.accessioned2019-07-05T12:32:46Z
dc.date.available2019-07-05T12:32:46Z
dc.date.issued2018
dc.identifier.issn0935-9648
dc.identifier.doi10.1002/adma.201706108
dc.identifier.urihttp://hdl.handle.net/10072/378958
dc.description.abstractThe challenge in the artificial photosynthesis of fossil resources from CO2 by utilizing solar energy is to achieve stable photocatalysts with effective CO2 adsorption capacity and high charge‐separation efficiency. A hierarchical direct Z‐scheme system consisting of urchin‐like hematite and carbon nitride provides an enhanced photocatalytic activity of reduction of CO2 to CO, yielding a CO evolution rate of 27.2 µmol g−1 h−1 without cocatalyst and sacrifice reagent, which is >2.2 times higher than that produced by g‐C3N4 alone (10.3 µmol g−1 h−1). The enhanced photocatalytic activity of the Z‐scheme hybrid material can be ascribed to its unique characteristics to accelerate the reduction process, including: (i) 3D hierarchical structure of urchin‐like hematite and preferable basic sites which promotes the CO2 adsorption, and (ii) the unique Z‐scheme feature efficiently promotes the separation of the electron–hole pairs and enhances the reducibility of electrons in the conduction band of the g‐C3N4. The origin of such an obvious advantage of the hierarchical Z‐scheme is not only explained based on the experimental data but also investigated by modeling CO2 adsorption and CO adsorption on the three different atomic‐scale surfaces via density functional theory calculation. The study creates new opportunities for hierarchical hematite and other metal‐oxide‐based Z‐scheme system for solar fuel generation.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWiley Online
dc.publisher.placeGermany
dc.relation.ispartofchapter1706108
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto9
dc.relation.ispartofissue10
dc.relation.ispartofjournalAdvanced Materials
dc.relation.ispartofvolume30
dc.subject.fieldofresearchChemical Sciences not elsewhere classified
dc.subject.fieldofresearchPhysical Sciences
dc.subject.fieldofresearchChemical Sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode039999
dc.subject.fieldofresearchcode02
dc.subject.fieldofresearchcode03
dc.subject.fieldofresearchcode09
dc.titleA Hierarchical Z-Scheme α-Fe2O3/g-C3N4 Hybrid for Enhanced Photocatalytic CO2 Reduction
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorZhao, Huijun


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