Preparation of p-n heterojunction g-C3N4/BiOBr and its photocatalytic performance under visible light

LIU You-chang; WANG Liang

Volume 46 Issue 9

Sep. 2018

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Article Navigation > Journal of Fuel Chemistry and Technology > 2018 > 46(9): 1146-1152

LIU You-chang, WANG Liang. Preparation of p-n heterojunction g-C3N4/BiOBr and its photocatalytic performance under visible light[J]. Journal of Fuel Chemistry and Technology, 2018, 46(9): 1146-1152.

Citation:

LIU You-chang, WANG Liang. Preparation of p-n heterojunction g-C₃N₄/BiOBr and its photocatalytic performance under visible light[J]. Journal of Fuel Chemistry and Technology, 2018, 46(9): 1146-1152.

LIU You-chang, WANG Liang. Preparation of p-n heterojunction g-C3N4/BiOBr and its photocatalytic performance under visible light[J]. Journal of Fuel Chemistry and Technology, 2018, 46(9): 1146-1152.

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Preparation of p-n heterojunction g-C₃N₄/BiOBr and its photocatalytic performance under visible light

LIU You-chang¹,
WANG Liang^{2
,
,}

1.
Qingdao Institute of Textile Fiber Supervision and Inspection, Qingdao 266061, China
2.
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

More Information

Corresponding author: WANG Liang, E-mail: wangliang_good@163.com
Received Date: 2018-04-02
Rev Recd Date: 2018-07-12

Available Online: 2021-01-23

Publish Date: 2018-09-10

Abstract

Abstract

g-C₃N₄ nanosheet was obtained from the precursors melamine and BiOBr nanosheets was synthesized from the raw materials Bi(NO₃)₃·5H₂O and KBr. The two-dimensional g-C₃N₄/BiOBr heterojunction was synthesized by hydrothermal method. The intimated interface and suitable crystal facets of g-C₃N₄ and BiOBr were favorable the combination of this two photocatalysts, resulting in enhancing the visible-light photocatalytic activity. The phase structure, optical absorption property as well as composition and structure of as-prepared materials were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, ultraviolet-visible diffuse reflection spectroscopy (DRS) and photoluminescence emission spectroscopy. The potential mechanisms of constructing two-dimensional g-C₃N₄/BiOBr heterojunction were revealed. The photocatalytic activity of as-synthesized photocatalysts was evaluated by photocatalytic degradation of RhB under visible light (λ>420 nm) irradiation. Results show that the as-synthesized heterojunctions can significantly enhance photocatalytic activity in comparison with pure g-C₃N₄ and BiOBr. The mechanisms of enhanced photocatalytic performance were explained.
- g-C₃N₄/BiOBr,
- heterojunction,
- degradation,
- photocatalysis

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References(22)

References

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