Citation: Qiang-Yong Tang, Rui Huo, Lang-Ying Ou, Xiu-Li Luo, Yan-Ran Lv, Yue-Hua Xu. One-pot synthesis of peony-like Bi₂S₃/BiVO₄(040) with high photocatalytic activity for glyphosate degradation under visible light irradiation[J]. Chinese Journal of Catalysis, ;2019, 40(4): 580-589. doi: S1872-2067(19)63296-1 shu

One-pot synthesis of peony-like Bi₂S₃/BiVO₄(040) with high photocatalytic activity for glyphosate degradation under visible light irradiation

College of Materials and Energy, South China Agricultural University, Guangzhou 510642, Guangdong, China

Received Date: 14 November 2018
Revised Date: 7 January 2019

In this work, samples consisting of BiVO₄ with exposed (040) facets coupled with Bi₂S₃ (Bi₂S₃/BiVO₄) were prepared through a one-pot hydrothermal method, using ethylenediaminetetraacetic acid as directing agent and L-cysteine as sulfur source and soft template. X-ray diffraction, field emission scanning electron microscopy, and high-resolution transmission electron microscopy measurements indicated that the Bi₂S₃ content had a significant influence on the growth of (040) and (121) facets as well as on the morphology of the Bi₂S₃/BiVO₄ samples. When the Bi₂S₃ content reached 1 mmol, the Bi₂S₃/BiVO₄ samples exhibited a peony-like morphology. The results of transient photocurrent tests and electrochemical impedance spectroscopy measurements confirmed that a more effective charge separation and a faster interfacial charge transfer occurred in Bi₂S₃/BiVO₄ than BiVO₄. The enhanced photocatalytic activity of the Bi₂S₃/BiVO₄ samples could be attributed to the improved absorption capability in the visible light region and the enhanced electron-hole pair separation efficiency due to the formation of the Bi₂S₃/BiVO₄ heterostructure. In addition, the Bi₂S₃/BiVO₄ samples showed relative stability and reusability. The simple method presented in this work could be used to fabricate composite photocatalysts with high activity for different applications, such as photocatalytic degradation of organic pollutants, photocatalytic splitting of water, and photocatalytic reduction of carbon dioxide.
- BiVO₄(040),
- Bi₂S₃/BiVO₄(040),
- Heterostructure,
- Photocatalytic,
- Glyphosate
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

One-pot synthesis of peony-like Bi2S3/BiVO4(040) with high photocatalytic activity for glyphosate degradation under visible light irradiation

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通讯作者: 陈斌, bchen63@163.com

One-pot synthesis of peony-like Bi₂S₃/BiVO₄(040) with high photocatalytic activity for glyphosate degradation under visible light irradiation