Citation: Meijuan Chen, Liyun Zhao, Xianjin Shi, Wei Wang, Yu Huang, Lijuan Fu, Lijun Ma. Synthesis of carbon quantum dots decorating Bi₂MoO₆ microspherical heterostructure and its efficient photocatalytic degradation of antibiotic norfloxacin[J]. Chinese Chemical Letters, ;2024, 35(8): 109336. doi: 10.1016/j.cclet.2023.109336 shu

Synthesis of carbon quantum dots decorating Bi₂MoO₆ microspherical heterostructure and its efficient photocatalytic degradation of antibiotic norfloxacin

Meijuan Chen ^{a, *,} ,
Liyun Zhao ^a ,
Xianjin Shi ^b ,
Wei Wang ^b ,
Yu Huang ^b ,
Lijuan Fu ^a ,
Lijun Ma ^a

a.
School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
b.
Key Lab of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China

chenmeijuan@xjtu.edu.cn

Received Date: 31 August 2023
Revised Date: 13 November 2023
Accepted Date: 22 November 2023
Available Online: 30 November 2023

Figures(4)

In this study, three-dimensional microspherical CQDs/Bi₂MoO₆ heterostructures were synthesized using a simple alcohol-thermal method. It was found that the CQDs/Bi₂MoO₆ had a large specific surface area of 56.0 m²/g, and the introduction of CQDs extended the light absorption spectrum from 480 nm to 496 nm. When utilizing the synthesized CQDs/Bi₂MoO₆ composite for photocatalytic degradation of antibiotic norfloxacin in a water environment, complete decay of norfloxacin and effective removal of total organic carbon (TOC) were achieved within 30 min. Through the optimization of material synthesis and experimental conditions, the optimal CQDs loading amount was determined as 200 µL, the optimal CQDs/Bi₂MoO₆ dosage was 0.8 g/L. Moreover, the CQDs/Bi₂MoO₆ worked well under a wide pH range of 4.4–10.8. The coexistence of HCO₃⁻ enhanced the norfloxacin decay, while the presence of Cl⁻, NO₃⁻, and SO₄²⁻ slightly retarded it. The synthesized CQDs/Bi₂MoO₆ had the great potential in removing and mineralizing norfloxacin in real aquatic environments.
- Bi₂MoO₆,
- CQDs,
- Heterojunction,
- Norfloxacin,
- Photocatalysis
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沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis of carbon quantum dots decorating Bi2MoO6 microspherical heterostructure and its efficient photocatalytic degradation of antibiotic norfloxacin

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通讯作者: 陈斌, bchen63@163.com

Synthesis of carbon quantum dots decorating Bi₂MoO₆ microspherical heterostructure and its efficient photocatalytic degradation of antibiotic norfloxacin