Self-Assembly of Bi2Sn2O7/?-Bi2O3 S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

被引：14

作者：

Zhu, Baikang ^{[1
,2
]}

Dong, Qinbin ^{[1
]}

Huang, Jianghua ^{[1
]}

Yang, Mengmeng ^{[1
]}

Chen, Xianlei ^{[3
]}

Zhai, Chunyang ^{[1
,4
]}

Chen, Qingguo ^{[1
]}

Wang, Bohong ^{[1
]}

Tao, Hengcong ^{[1
,2
]}

Chen, Li ^{[5
]}

机构：

[1] Zhejiang Ocean Univ, Sch Petrochem Engn & Environm, Zhoushan 316022, Peoples R China

[2] Natl & Local Joint Engn Res Ctr Harbor Oil & Gas S, Zhoushan 316022, Peoples R China

[3] Zhoushan Inst Calibrat & Testing Qual & Technol Su, Zhoushan 316000, Zhejiang, Peoples R China

[4] Ningbo Univ, Sch Mat Sci & Chem Engn, Ningbo 315021, Peoples R China

[5] Chinese Peoples Liberat Army Gen Hosp, Med Ctr 1, Dept Gen Practice, Beijing 100036, Peoples R China

来源：

ACS OMEGA | 2023年 / 8卷 / 15期

基金：

中国国家自然科学基金;

关键词：

HETEROJUNCTION; COMPOSITE; RAMAN; OXIDATION; WATER; BI; PHOTODEGRADATION; NANOCOMPOSITE; MECHANISMS; NANOSHEETS;

D O I：

10.1021/acsomega.2c07899

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fabrication of S-scheme heterojunctions with enhanced redox capability offers an effective approach to address environmental remediation. In this study, high-performance Bi2Sn2O7/fi-Bi2O3 S-scheme heterojunction photocatalysts were fabricated via the in situ growth of Bi2Sn2O7 on fi-Bi2O3 microspheres. The optimized Bi2Sn2O7/fi-Bi2O3 (BSO/BO-0.4) degradation efficiency for tetracycline hydrochloride was 95.5%, which was 2.68-fold higher than that of fi-Bi2O3. This improvement originated from higher photoelectron-hole pair separation efficiency, more exposed active sites, excellent redox capacity, and efficient generation of center dot O2- and center dot OH. Additionally, Bi2Sn2O7/ fi-Bi2O3 exhibited good stability against photocatalytic degradation, and the degradation efficiency remained >89.7% after five cycles. The photocatalytic mechanism of Bi2Sn2O7/fi-Bi2O3 S-scheme heterojunctions was elucidated. In this study, we design and fabricate high-performance heterojunction photocatalysts for environmental remediation using S-scheme photocatalysts.

引用

页码：13702 / 13714

页数：13

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