A direct Z-scheme S-Co3O4/Bi2WO6 heterostructure for enhanced photoelectrocatalytic degradation of tetracycline under visible light

被引:8
作者
Jia, Litao [1 ]
Yu, Pei [1 ]
Dong, Ying [1 ]
Xing, Yonglei [1 ]
Peng, Juan [1 ]
Ni, Gang [1 ]
Jin, Xiaoyong [1 ]
机构
[1] Ningxia Univ, State Key Lab High Efficiency Utilizat Coal & Gree, Natl Demonstrat Ctr Expt Chem Educ, Sch Chem & Chem Engn, Yinchuan 750021, Peoples R China
基金
中国科学院西部之光基金;
关键词
HETEROJUNCTION; PHOTOCATALYSIS; FABRICATION; MECHANISM; OXIDATION; REMOVAL; SYSTEM; G-C3N4; BI2WO6;
D O I
10.1039/d2nj05977k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The decomposition efficiency of refractory organic pollutants depends strongly on the characteristics of the photoanode semiconductors in the photoelectrocatalytic (PEC) process. The selection of superior materials with excellent PEC efficiency is a challenge in the practical application of PEC oxidation technology. Herein, a novel S-Co3O4/Bi2WO6 heterojunction photoanode was fabricated using a simple hydrothermal procedure. Compared with Bi2WO6 nanoflowers, the as-prepared S-Co3O4/Bi2WO6 photoanode had a large electroactive surface area, low charge transfer resistance, strong light absorption ability, and high separation efficiency for induced photogenerated electron/hole pairs (e(-)/h(+)). This relies on the fact that S doping not only controls the morphology of Co3O4 but also changes its intrinsic electronic structure to improve the interlayer polarization. Notably, the Z-scheme heterojunction formed by the combination of S-Co3O4 and Bi2WO6 not only enhances the e(-)/h(+) separation efficiency but also results in a stronger redox ability than that of pure Bi2WO6. In addition, reactive species trapping experiments and electron spin resonance tests demonstrated that the S-Co3O4/Bi2WO6 photoanode plays a dominant role in the degradation of tetracycline (TC) by O-2(-) and OH radicals. Therefore, the prepared S-Co3O4/Bi2WO6 photoanode exhibits better PEC performance than Co3O4, S-Co3O4 and Bi2WO6 in the degradation of TC. The optimized S-Co3O4/Bi2WO6 composite showed a degradation rate of 87.4% in 30 mg L-1 TC solution. This work provides a new strategy for the construction of efficient photoelectroanodes.
引用
收藏
页码:3745 / 3757
页数:13
相关论文
共 50 条
[41]   Enhanced Visible Light-Driven Photoelectrocatalytic Degradation of Paracetamol at a Ternary z-Scheme Heterojunction of Bi2WO6 with Carbon Nanoparticles and TiO2 Nanotube Arrays Electrode [J].
Mahhumane, Nondumiso ;
Cele, Leskey M. ;
Muzenda, Charles ;
Nkwachukwu, Oluchi V. ;
Koiki, Babatunde A. ;
Arotiba, Omotayo A. .
NANOMATERIALS, 2022, 12 (14)
[42]   Synthesis of 2D NiFe2O4 nanoplates/2D Bi2WO6 nanoflakes heterostructure: An enhanced Z-scheme charge transfer and separation for visible-light-driven photocatalytic degradation of toxic pollutants [J].
Koutavarapu, Ravindranadh ;
Tamtam, Mohan Rao ;
Lee, Sang-Gyenog ;
Rao, M. C. ;
Lee, Dong-Yeon ;
Shim, Jaesool .
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2021, 9 (05)
[43]   Novel Z-scheme In2S3/Bi2WO6 core-shell heterojunctions with synergistic enhanced photocatalytic degradation of tetracycline hydrochloride [J].
He, Zuming ;
Siddique, Muhammad Saboor ;
Yang, Hanpei ;
Xia, Yongmei ;
Su, Jiangbin ;
Tang, Bin ;
Wang, Lina ;
Kang, Li ;
Huang, Zhengyi .
JOURNAL OF CLEANER PRODUCTION, 2022, 339
[44]   A Z-scheme Bi2O2S/Bi2WO6 heterostructure for photocatalytic water splitting: A first-principles study [J].
Jian, Shengyong ;
Xiao, Qingquan ;
Huang, Jin ;
Ye, Jianfeng ;
Zhu, Yao ;
Xu, Linjun ;
Xie, Quan .
MATERIALS TODAY COMMUNICATIONS, 2025, 46
[45]   Rational Fabrication of Hierarchical Z-Scheme WO3/Bi2WO6 Nanotubes for Superior Photoelectrocatalytic Reaction [J].
Rong, Feng ;
Wang, Qinyu ;
Lu, Qifang ;
Yao, Linbing ;
Wei, Mingzhi .
CHEMISTRYSELECT, 2019, 4 (09) :2676-2684
[46]   Novel shungite based Bi2WO6 carbocatalyst with high photocatalytic degradation of tetracycline under visible light irradiation [J].
Simsek, Esra Bilgin ;
Balta, Zeynep ;
Demircivi, Pelin .
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2019, 380
[47]   Novel Z-scheme MoS2/Bi2WO6 heterojunction with highly enhanced photocatalytic activity under visible light irradiation [J].
Zhang, Yu ;
Ju, Peng ;
Hao, Lei ;
Zhai, Xiaofan ;
Jiang, Fenghua ;
Sun, Chengjun .
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 854
[48]   Facile construction of 3D hierarchical flower-like Ag2WO4/Bi2WO6 Z-scheme heterojunction photocatalyst with enhanced visible light photocatalytic activity [J].
Ni, Zhewei ;
Shen, Yong ;
Xu, LiHui ;
Xiang, Guanghong ;
Chen, Mingyang ;
Shen, Nan ;
Li, Kai ;
Ni, Kai .
APPLIED SURFACE SCIENCE, 2022, 576
[49]   Construction of a Bi2WO6/BiVO4 photocatalytic system for efficient visible light degradation of tetracycline drugs [J].
Zhang, Yiyao ;
Song, Hongchen ;
Han, Jintai ;
Liu, Yunchao ;
Sun, Jing ;
Shen, Tingting ;
Wang, Xikui ;
Wang, Zhen ;
Zhang, Weizhen ;
Yao, Xuerui .
RSC ADVANCES, 2023, 13 (06) :3612-3622
[50]   Z-scheme FeOOH/g-C3N4 nanosheets promoted PDS activation for efficient tetracycline degradation under visible light [J].
Li, Yongqi ;
Qu, Chao ;
Ye, Qing ;
Meng, Fanwei ;
Yang, Decai ;
Wang, Lanyang .
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2024, 12 (05)