Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/117893
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Type: Journal article
Title: Thickness-dependent facet junction control of layered BiOIO₃ single crystals for highly efficient CO₂ photoreduction
Other Titles: Thickness-dependent facet junction control of layered BiOIO3 single crystals for highly efficient CO2 photoreduction
Author: Chen, F.
Huang, H.
Ye, L.
Zhang, T.
Zhang, Y.
Han, X.
Ma, T.
Citation: Advanced Functional Materials, 2018; 28(46):1804284-1-1804284-11
Publisher: Wiley
Issue Date: 2018
ISSN: 1616-301X
1616-3028
Statement of
Responsibility: 
Fang Chen, Hongwei Huang, Liqun Ye, Tierui Zhang, Yihe Zhang, Xiaopeng Han and Tianyi Ma
Abstract: Thin 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.
Keywords: Bismuth-based materials; charge separation; CO₂ reduction; photocatalysis
Rights: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
DOI: 10.1002/adfm.201804284
Grant ID: http://purl.org/au-research/grants/arc/DE150101306
http://purl.org/au-research/grants/arc/LP160100927
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Chemical Engineering publications

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