- Title
- Unprecedented eighteen-faceted BiOCl with a ternary facet junction boosting cascade charge flow and photo-redox
- Creator
- Li, Min; Yu, Shixin; Huang, Hongwei; Li, Xiaowei; Feng, Yibo; Wang, Cong; Wang, Yonggang; Ma, Tianyi; Guo, Lin; Zhang, Yihe
- Relation
- Angewandte Chemie Vol. 58, Issue 28, p. 9517-9521
- Publisher Link
- http://dx.doi.org/10.1002/anie.201904921
- Publisher
- Wiley
- Resource Type
- journal article
- Date
- 2019
- Description
- Exposure of anisotropic crystal facets allows the directional transfer of photoexcited electrons (e⁻) and holes (h⁺), for spatial charge separation. High-index facets with a high density of low-coordinated atoms always serve as reactive catalytic sites. However, preparation of multi-facets or high-index facets is highly challenging for layered bismuth-based photocatalysts. Herein, we report the preparation of unprecedented eighteen-faceted BiOCl with {001} top facets and {102} and {112} oblique facets via a hydrothermal process. Compared to the conventional BiOCl square plates with {001} top facets and {110} lateral facets, the eighteen-faceted BiOCl has highly enhanced photocatalytic activity for H₂ evolution and hydroxyl radicals (·OH) production. Theoretical calculations and photodeposition results disclose that the of eighteen-faceted BiOCl has a well-matched {001}/{102}/{112} ternary facet junction, which provides a cascade path for more efficient charge flow than the binary facet junction in BiOCl square plates.
- Subject
- bismuth; facet junctions; hydrogen production; hydroxyl radicals evolution; photocatalysis
- Identifier
- http://hdl.handle.net/1959.13/1405523
- Identifier
- uon:35508
- Identifier
- ISSN:1433-7851
- Rights
- This is the peer reviewed version of above article, which has been published in final form at http://dx.doi.org/10.1002/anie.201904921. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
- Language
- eng
- Full Text
- Reviewed
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