Improved photoredox activity of the 2D Bi4Ti3O12–BiVO4–Bi4V2O10 heterostructure via the piezoelectricity-enhanced charge transfer effect

Wuyou Wang; Kai Zhu; Beibei Zhang; Xiaowei Chen; Dongqi Ma; Xuewen Wang; Rongbin Zhang; Yin Liu; Jinxin Shen; Pengyu Dong; Xinguo Xi

doi:10.1039/D2DT02346F

Improved photoredox activity of the 2D Bi₄Ti₃O₁₂–BiVO₄–Bi₄V₂O₁₀ heterostructure via the piezoelectricity-enhanced charge transfer effect†

Wuyou Wang,

‡*^a Kai Zhu,‡^ae Beibei Zhang,^a Xiaowei Chen,^b Dongqi Ma,^a Xuewen Wang,

^d Rongbin Zhang,^d Yin Liu,^e Jinxin Shen,^a Pengyu Dong

*^c and Xinguo Xi*^bc

Author affiliations

* Corresponding authors

^a School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China

^b School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China

^c Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, PR China

^d Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, the College of Chemistry, Nanchang University, Nanchang 330031, PR China

^e School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, PR China

Abstract

Introducing piezoelectric materials with the built-in electric field caused by mechanical force has been confirmed as an effective strategy to boost the separation efficiency of photoexcited charge carriers that determines the photocatalytic performance. In this study, we introduced Bi₄Ti₃O₁₂ with superior piezoelectric properties into BiVO₄–Bi₄V₂O₁₀ materials to synthesize a 2D Bi₄Ti₃O₁₂–BiVO₄–Bi₄V₂O₁₀ photocatalyst via a facile hydrothermal method. Compared with bare BiVO₄, the Bi₄Ti₃O₁₂–BiVO₄–Bi₄V₂O₁₀ piezo-photocatalytic activity towards Cr(VI) removal and oxygen evolution is boosted remarkably under both illumination and ultrasound treatments. The promoted photocatalytic activity can be ascribed to the accelerated photoexcited carrier separation efficiency driven by the polarization electric field and the synergy effect in the heterostructure. This work provides a simple and sustainable strategy for the design and development of piezo-photocatalysts with high photoredox activity capacity.

Dalton Transactions

Improved photoredox activity of the 2D Bi₄Ti₃O₁₂–BiVO₄–Bi₄V₂O₁₀ heterostructure via the piezoelectricity-enhanced charge transfer effect†

Abstract

Supplementary files

Article information

Download Citation

Permissions

Improved photoredox activity of the 2D Bi₄Ti₃O₁₂–BiVO₄–Bi₄V₂O₁₀ heterostructure via the piezoelectricity-enhanced charge transfer effect

Social activity

Search articles by author

Spotlight

Advertisements

Dalton Transactions