Synthesis of Dual Z-Scheme CuBi2O4/Bi2Sn2O7/Sn3O4 Photocatalysts with Enhanced Photocatalytic Performance for the Degradation of Tetracycline under Visible Light Irradiation

被引：11
作者：
Xu, Jingjing [1 ]
Zhu, Yanlin [1 ]
Liu, Zeyu [1 ]
Teng, Xueyu [1 ]
Gao, Haiqing [1 ]
Zhao, Yaxin [1 ]
Chen, Mindong [1 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equipm, Jiangsu Engn Technol Res Ctr Environm Cleaning Mat, Sch Environm Sci & Engn,Jiangsu Key Lab Atmospher, Nanjing 210044, Peoples R China
来源：
CATALYSTS | 2023年 / 13卷 / 07期
关键词：
dual Z-scheme; photocatalysis; tetracycline; visible light; G-C3N4; NANOSHEETS; HETEROJUNCTION; NANOPARTICLES; CONSTRUCTION;
D O I：
10.3390/catal13071028
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The dual Z-scheme heterojunction CuBi2O4/Bi2Sn2O7/Sn3O4(CBS) was successfully constructed through in situ growth methods, and its photocatalytic performance was evaluated via degradation of tetracycline hydrochloride under visible light. Out of all samples, CBS-2 exhibited the highest photocatalytic activity, with an apparent rate constant of 2.34, 20.16, and 44.17 times that of Bi2Sn2O7, CuBi2O4, and Sn3O4, respectively. Even after four cycles, the photocatalytic efficiency remained above 85%. The improvement can be attributed to the construction of the Z-scheme heterojunction, which effectively promotes the separation and migration of photogenerated carriers. The possible photocatalytic degradation mechanism of dual Z-scheme heterojunction CBS was deduced based on the theory of free radical capture and energy band.
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页数：14
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