Highly symmetrical, 24-faceted, concave BiVO4 polyhedron bounded by multiple high-index facets for prominent photocatalytic O2 evolution under visible light

Jianqiang Hu; Huichao He; Liang Li; Xin Zhou; Zhaosheng Li; Qing Shen; Congping Wu; Adullah M. Asiri; Yong Zhou; Zhigang Zou

doi:10.1039/C9CC01366K

Highly symmetrical, 24-faceted, concave BiVO₄ polyhedron bounded by multiple high-index facets for prominent photocatalytic O₂ evolution under visible light†

Jianqiang Hu,^a Huichao He,^b Liang Li,^a Xin Zhou,*^c Zhaosheng Li,

*^ade Qing Shen,

^f Congping Wu,^ag Adullah M. Asiri,

^h Yong Zhou

*^adg and Zhigang Zou^adeg

Author affiliations

* Corresponding authors

^a National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing 210093, P. R. China
E-mail: zhouyong1999@nju.edu.cn

^b State Key Laboratory of Environmental Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, P. R. China

^c College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning 116622, P. R. China
E-mail: zhouxin@dlu.edu.cn

^d Key Laboratory for Nano Technology, Nanjing University, Nanjing 210093, China

^e College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, P. R. China
E-mail: zsli@nju.edu.cn

^f Faculty of Informatics and Engineering, the University of Electro-Communications, Tokyo 182-8585, Japan

^g Kunshan Sunlaite New Energy Co., Ltd, Kunshan Innovation Institute of Nanjing University, Kunshan, Jiangsu 215347, P. R. China

^h Center of Excellence for Advanced Materials Research, Chemistry of Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia

Abstract

A highly symmetrical, 24-faceted, concave BiVO₄ polyhedron was fabricated, bounded by multiple high-index {012}, {210}, {115}, and {511} facets, exhibiting impressive photocatalytic O₂ evolution for water oxidation in the absence of any cocatalysts, more than two orders of magnitude higher than that of the bulk materials. The corresponding apparent quantum yield (AQY) of O₂ evolution was measured as high as 30.7% under 420 nm light irradiation, a new record AQY for BiVO₄. The high-index facets are not only energetically favorable for water dissociation, but also exhibit an obvious reduction in the overpotential (0.7–1.0 V) for the oxygen evolution reaction.

Chemical Communications

Highly symmetrical, 24-faceted, concave BiVO₄ polyhedron bounded by multiple high-index facets for prominent photocatalytic O₂ evolution under visible light†

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Highly symmetrical, 24-faceted, concave BiVO₄ polyhedron bounded by multiple high-index facets for prominent photocatalytic O₂ evolution under visible light

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