Citation: Xu Tianxiang, Wang Jiapei, Cong Ye, Jiang Song, Zhang Qin, Zhu Hui, Li Yanjun, Li Xuanke. Ternary BiOBr/TiO₂/Ti₃C₂T_x MXene nanocomposites with heterojunction structure and improved photocatalysis performance[J]. Chinese Chemical Letters, ;2020, 31(4): 1022-1025. doi: 10.1016/j.cclet.2019.11.038 shu

Ternary BiOBr/TiO₂/Ti₃C₂T_x MXene nanocomposites with heterojunction structure and improved photocatalysis performance

Xu Tianxiang ^a,b ,
Wang Jiapei ^a,b ,
Cong Ye ^a,b,*, ,
Jiang Song ^b ,
Zhang Qin ^b ,
Zhu Hui ^b ,
Li Yanjun ^b ,
Li Xuanke ^a,*,

a.
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
b.
Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan University of Science and Technology, Wuhan 430081, China

congye@wust.edu.cn

lixuanke@wust.edu.cn

Received Date: 14 October 2019
Revised Date: 17 November 2019
Accepted Date: 21 November 2019
Available Online: 21 November 2019

Figures(4)

The rational design and construction of heterojunction structure is an effective strategy to improve the photocatalytic performance. Herein, a series of BiOBr nanosheets-immobilized TiO₂/Ti₃C₂T_x MXene hybrid materials with heterojunction structure were synthesized by a facial one-step hydrothermal method. The ternary composites show outstanding performance as photocatalysts for the degradation of rhodamine B due to the optimized synergetic effects of BiOBr, TiO₂ and Ti₃C₂T_x. The improved photocatalytic performance is remarkably attributed to the construction of a heterojunction between TiO₂ and BiOBr due to their well-matching of energy band position, which can enhance the absorption for visible light and promote the transfer of photo-generated charge carriers. Moreover, Ti₃C₂T_x acts as an electron trap to further accelerate the separation of photo-generated electrons and holes.
- MXene,
- BiOBr,
- TiO₂,
- Heterojunction,
- Photocatalytic activity
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沈阳化工大学材料科学与工程学院沈阳 110142

Ternary BiOBr/TiO2/Ti3C2Tx MXene nanocomposites with heterojunction structure and improved photocatalysis performance

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通讯作者: 陈斌, bchen63@163.com

Ternary BiOBr/TiO₂/Ti₃C₂T_x MXene nanocomposites with heterojunction structure and improved photocatalysis performance