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V2C MXene-modified g-C3N4 for enhanced visible-light photocatalytic activity
被引:27
作者:

Xu, Ruizheng
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机构: Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China

Wei, Guiyu
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机构: Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China

Xie, Zhemin
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机构: Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China

Diao, Sijie
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机构: Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China

Wen, Jianfeng
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机构: Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China

Tang, Tao
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h-index: 0
机构: Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China

Jiang, Li
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h-index: 0
机构: Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China

Li, Ming
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h-index: 0
机构:
Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China

Hu, Guanghui
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h-index: 0
机构:
Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China
机构:
[1] Guilin Univ Technol, Coll Sci, Educ Dept Guangxi Zhuang Autonomous Reg, Guilin 541004, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Photocatalyst;
Cocatalyst;
Charge transfer;
Separation efficiency;
g-C3N4;
V(2)CMXene;
CARBON NITRIDE;
CONSTRUCTION;
DEGRADATION;
NANOSHEETS;
D O I:
10.1016/j.jallcom.2023.172656
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:
Increasing the efficiency of charge transfer and separation efficiency of photogenerated carriers are still the main challenges in the field of semiconductor-based photocatalysts. Herein, we synthesized g-C3N4@V2C MXene photocatalyst by modifying g-C3N4 using V2C MXene. The prepared photocatalyst exhibited outstanding photocatalytic performance under visible light. The degradation efficiency of methyl orange by g-C3N4@V2C MXene photocatalyst was as high as 94.5%, which is 1.56 times higher than that by g-C3N4. This was attributed to the V2C MXene inhibiting the rapid recombination of photogenerated carriers and facilitating rapid transfer of photogenerated electrons (e(-)) from g-C3N4 to MXene. Moreover, g-C3N4@V2C MXene photocatalyst showed good cycling stability. The photocatalytic performance was higher than 85% after three cycles. Experiments to capture free radicals revealed that superoxide radicals (<middle dot>O-2(-)) are the main contributors to the photocatalytic activity. Thus, the proposed g-C3N4@V2C MXene photocatalyst is a promising visible-light catalyst.
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页数:10
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