Atomic-Scale Defected HfS₂ Nanosheets: A Novel Platform Enhancing Photocatalysis

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dc.contributor.authorTalebian-Kiakalaieh, A.
dc.contributor.authorHashem, E.M.
dc.contributor.authorGuo, M.
dc.contributor.authorXia, B.
dc.contributor.authorRan, J.
dc.contributor.authorQiao, S.Z.
dc.date.issued2023
dc.description.abstractRecently, novel 2D materials with fascinating characteristics are extensively applied to design/fabricate high-activity and cost-effective photocatalysts for solar-driven fuels/chemicals generation. Among these 2D materials, HfS2 nanosheets (NSs) exhibit excellent features of large surface area, short bulk-to-surface distance, alterable band structures, and vast catalytic sites. Despite these features, no realistic experimental works on HfS2-based materials are reported in photocatalysis field. Moreover, it is interesting but challenging to realize atomic-scale engineering of compositions/structures for novel 2D materials and to relate these atomic-scale characteristics with the element/space/time-resolved charge kinetics of 2D materials-based photocatalysts. Herein, for the first time, atomic-scale defected HfS2 NSs are designed/synthesized. The as-synthesized HfS2 NSs are combined with various photocatalysts to acquire novel HfS2-TiO2, HfS2-CdS, HfS2-ZnIn2S4, and HfS2-C3N4 composites, respectively. Among them, HfS2-CdS exhibits the highest rate (5971 μmol g−1 h−1) on hydrogen (H2) evolution in triethanolamine aqueous solution, together with obviously-enhanced rates on H2 (2419 μmol g−1 h−1) and benzaldehyde (5.11 mmol g−1 h−1) evolution in benzyl alcohol aqueous solution. Various state-of-art characterizations reveal the element/space/time-resolved electron/hole kinetics in HfS2-CdS composites, disclosing that these atomic-scale S vacancies temporarily trapping electrons to facilitate spatiotemporal electron–hole separation/transfer. This work paves avenues to atomic-scale design/synthesis of new 2D-materials-based photocatalysts for sunlight utilization.
dc.description.statementofresponsibilityAmin Talebian-Kiakalaieh, Elhussein M. Hashem, Meijun Guo, Bingquan Xia, Jingrun Ran, and Shi-Zhang Qiao
dc.identifier.citationAdvanced Materials Technologies, 2023; 8(24):2301213-1-2301213-10
dc.identifier.doi10.1002/admt.202301213
dc.identifier.issn2365-709X
dc.identifier.issn2365-709X
dc.identifier.orcidHashem, E.M. [0000-0001-7656-2358]
dc.identifier.orcidGuo, M. [0000-0002-7974-5165]
dc.identifier.orcidXia, B. [0000-0003-0909-7788]
dc.identifier.orcidQiao, S.Z. [0000-0002-1220-1761] [0000-0002-4568-8422]
dc.identifier.urihttps://hdl.handle.net/2440/140305
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/arc/FL170100154
dc.relation.granthttp://purl.org/au-research/grants/arc/DE200100629
dc.relation.granthttp://purl.org/au-research/grants/arc/DP22102596
dc.relation.granthttp://purl.org/au-research/grants/arc/FT230100192
dc.relation.granthttp://purl.org/au-research/grants/arc/LP210301397
dc.relation.granthttp://purl.org/au-research/grants/arc/CE230100032
dc.rights© 2023 The Authors. Advanced Materials Technologies published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
dc.source.urihttp://dx.doi.org/10.1002/admt.202301213
dc.subjectcost-effective photocatalysts; solar-driven fuels
dc.titleAtomic-Scale Defected HfS₂ Nanosheets: A Novel Platform Enhancing Photocatalysis
dc.title.alternativeAtomic-Scale Defected HfS2 Nanosheets: A Novel Platform Enhancing Photocatalysis
dc.typeJournal article
pubs.publication-statusPublished

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