Thickness-dependent facet junction control of layered BiOIO₃ single crystals for highly efficient CO₂ photoreduction

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dc.contributor.authorChen, F.
dc.contributor.authorHuang, H.
dc.contributor.authorYe, L.
dc.contributor.authorZhang, T.
dc.contributor.authorZhang, Y.
dc.contributor.authorHan, X.
dc.contributor.authorMa, T.
dc.date.issued2018
dc.description.abstractThin layer fabrication and crystal facet engineering favor the prompt charge transfer from bulk to the surface of a material and spatial charge separation among different facets, tremendously benefitting photocatalytic activity. However, the thickness and surface facet composition are considered as two entwined characteristics of layered materials with well‐defined and tunable shapes, which possess great promise to achieve the simultaneous manipulation of charge transfer and spatial separation. Herein, it is demonstrated that one solution for the aforementioned issue by controllably regulating the surface {010}/{100} facet junctions of a layered thickness‐tunable bismuth‐based material, BiOIO₃. The attenuation in thickness of BiOIO₃ nanoplates shortens the diffusion pathway of charge carriers, and more importantly the tuning of nanolayer thickness renders the ratio variation of the top {010} facet to the lateral {100} facet, which dominates the spatial separation of photogenerated electrons and holes. As a result, the highest CO evolution rate from CO₂ reduction over BiOIO₃ nanoplates with the optimal thickness and ratio of exposed facets reaches 5.42 µmol g⁻¹ h⁻¹, over 300% that of the bulk counterpart (1.77 µmol g⁻¹ h⁻¹). This work paves a new way for governing charge movement behaviors on the basis of the synergistic engineering of layer structure and exposing facets.
dc.description.statementofresponsibilityFang Chen, Hongwei Huang, Liqun Ye, Tierui Zhang, Yihe Zhang, Xiaopeng Han and Tianyi Ma
dc.identifier.citationAdvanced Functional Materials, 2018; 28(46):1804284-1-1804284-11
dc.identifier.doi10.1002/adfm.201804284
dc.identifier.issn1616-301X
dc.identifier.issn1616-3028
dc.identifier.urihttp://hdl.handle.net/2440/117893
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/arc/DE150101306
dc.relation.granthttp://purl.org/au-research/grants/arc/LP160100927
dc.rights© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
dc.source.urihttps://doi.org/10.1002/adfm.201804284
dc.subjectBismuth-based materials; charge separation; CO₂ reduction; photocatalysis
dc.titleThickness-dependent facet junction control of layered BiOIO₃ single crystals for highly efficient CO₂ photoreduction
dc.title.alternativeThickness-dependent facet junction control of layered BiOIO3 single crystals for highly efficient CO2 photoreduction
dc.typeJournal article
pubs.publication-statusPublished

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