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高等学校化学研究 ›› 2019, Vol. 35 ›› Issue (4): 662-666.doi: 10.1007/s40242-019-9023-7

• Articles • 上一篇    下一篇

In-situ Reduction Synthesis of Bi/BiOI Heterostructure Films with High Photoelectrochemical Activity

LIU Yanfei, CHU Yu, DU Zhuoyang, SUN Yan, CAO Feng   

  1. Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, P. R. China
  • 收稿日期:2019-01-23 修回日期:2019-04-24 出版日期:2019-08-01 发布日期:2019-08-01
  • 通讯作者: CAO Feng E-mail:caof@atm.neu.edu.cn
  • 基金资助:
    Supported by the University Student Innovation Training Program of China(No.03040022118001).

In-situ Reduction Synthesis of Bi/BiOI Heterostructure Films with High Photoelectrochemical Activity

LIU Yanfei, CHU Yu, DU Zhuoyang, SUN Yan, CAO Feng   

  1. Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, P. R. China
  • Received:2019-01-23 Revised:2019-04-24 Online:2019-08-01 Published:2019-08-01
  • Contact: CAO Feng E-mail:caof@atm.neu.edu.cn
  • Supported by:
    Supported by the University Student Innovation Training Program of China(No.03040022118001).

摘要: The Bi/BiOI heterostructure films grew perpendicular to the FTO substrates were synthesized in-situ through an electrochemical deposition and hydrogen reduction method. The metallic Bi nanoparticles were decorated onto the surface of BiOI nanosheets via an in-situ reduction, induced 6.3 times improvement of photocurrent density, compared to the pristine BiOI at 1.23 V vs. reversible hydrogen electrode(RHE). The enhancement of photoelectrochemical performance was attributed not only to the efficient separation of charge resulted from surface plasmon resonance effect, but also to the fast charge transfer at the interface due to the in-situ reduction of the films. This work provided a simple and facile strategy to in-situ construct heterostructure films, and showed an effective method to improve the photoelectrochemical activity of Bi-based semiconductors.

关键词: Photoelectrochemical, BiOI film, In-situ reduction, Surface plasmon resonance

Abstract: The Bi/BiOI heterostructure films grew perpendicular to the FTO substrates were synthesized in-situ through an electrochemical deposition and hydrogen reduction method. The metallic Bi nanoparticles were decorated onto the surface of BiOI nanosheets via an in-situ reduction, induced 6.3 times improvement of photocurrent density, compared to the pristine BiOI at 1.23 V vs. reversible hydrogen electrode(RHE). The enhancement of photoelectrochemical performance was attributed not only to the efficient separation of charge resulted from surface plasmon resonance effect, but also to the fast charge transfer at the interface due to the in-situ reduction of the films. This work provided a simple and facile strategy to in-situ construct heterostructure films, and showed an effective method to improve the photoelectrochemical activity of Bi-based semiconductors.

Key words: Photoelectrochemical, BiOI film, In-situ reduction, Surface plasmon resonance