Yb/Bi2WO6材料的制备及水中氧氟沙星的光催化降解

IF 3.6 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL

Environmental Engineering Research Pub Date : 2024-05-09 DOI:10.4491/eer.2024.127

Bing Jia, Lieshan Wu, Jing Zhang, Jingjing Luo, Dan Liu, Yizhong Chen, Xiaowei Lu, Yalin Zeng

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引用次数: 4

摘要

本文采用一步水热法制备了镱掺杂Bi2WO66复合材料（Yb/ Bi2WO6）。研究了Yb/Bi2WO6光催化降解水中氧氟沙星的效果，并对实验条件进行了严格的控制。结果表明，在各种条件下，Yb/Bi2WO6光催化降解氧氟沙星表现出优异的性能，180 min内降解率为98.74%，循环4次后降解率为93.27%。结果表明，Yb/Bi2WO6具有良好的光催化性能和循环稳定性。表征结果表明，Yb的掺杂改变了Bi2WO6的形貌，缩小了带隙，减少了光生电子-空穴复合，增强了Yb/Bi2WO6的光催化性能。自由基猝灭实验表明，超氧自由基（O2-）在Yb/Bi2WO6光催化降解氧氟沙星中起着至关重要的作用。总之，本研究为掺杂稀土元素修饰铋基材料光催化降解抗生素提供了新的见解和理论支持。

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Preparation of Yb/Bi2WO6 material and the photocatalytic degradation of Ofloxacin in water

In this work, ytterbium (Yb) doped Bi2WO66 composite (Yb/ Bi2WO6) was prepared using a one-step hydrothermal method. The investigation focused on the photocatalytic degradation effect of Yb/Bi2WO6 on ofloxacin in water, with experimental conditions carefully controlled. The results revealed that under various conditions, Yb/Bi2WO6 exhibited excellent photocatalytic degradation performance for ofloxacin, achieving a degradation rate of 98.74% within 180 min and 93.27% after 4 cycles. These findings demonstrated that Yb/Bi2WO6 possessed good photocatalytic performance and cycling stability. The characterization results highlighted that the doping of Yb altered the morphology of Bi2WO6, narrowed the band gap, reduced photogenerated electron-hole recombination, and enhanced the photocatalytic performance of Yb/Bi2WO6. The free radical quenching experiments showed that superoxide radicals (･O2-) played a crucial role in the photocatalytic degradation of ofloxacin by Yb/Bi2WO6. Overall, this work provides new insights and theoretical support for the photocatalytic degradation of antibiotics using modified bismuth-based materials doped with rare earth elements.

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来源期刊

Environmental Engineering Research Environmental Science-Environmental Engineering

CiteScore

7.50

自引率

5.70%

发文量

期刊介绍： The Environmental Engineering Research (EER) is published quarterly by the Korean Society of Environmental Engineers (KSEE). The EER covers a broad spectrum of the science and technology of air, soil, and water management while emphasizing scientific and engineering solutions to environmental issues encountered in industrialization and urbanization. Particularly, interdisciplinary topics and multi-regional/global impacts (including eco-system and human health) of environmental pollution as well as scientific and engineering aspects of novel technologies are considered favorably. The scope of the Journal includes the following areas, but is not limited to: 1. Atmospheric Environment & Climate Change: Global and local climate change, greenhouse gas control, and air quality modeling. 2. Renewable Energy & Waste Management: Energy recovery from waste, incineration, landfill, and green energy. 3. Environmental Biotechnology & Ecology: Nano-biosensor, environmental genomics, bioenergy, and environmental eco-engineering. 4. Physical & Chemical Technology: Membrane technology and advanced oxidation. 5. Environmental System Engineering: Seawater desalination, ICA (instrument, control, and automation), and water reuse. 6. Environmental Health & Toxicology: Micropollutants, hazardous materials, ecotoxicity, and environmental risk assessment.