新型MIL-100(Fe)/TpPa-1 COF直接Z-scheme异质结光自fenton去除抗生素的合理设计：性能和生态毒性评估

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-01-20 DOI:10.1016/j.seppur.2025.131722

Qiang Li, Man Deng, Jun Gao, Aoxiang Liu, Xiujuan Tang, Erpeng Wang, Zhiheng Li, Huayue Zhu, Qi Wang

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引用次数: 0

摘要

光自fenton系统中光生载流子的电荷分离仍然限制了其去除有机污染物的能力。为了克服这一限制，设计并合成了一种新型的MIL-100(Fe)/TpPa-1 COF， MT2光自fenton系统，用于去除水中的盐酸四环素（TC）。结果表明，在改善电荷分离和h+、OH和O2 -的协同作用下，MT2（0.08 g L−1）在120 min内脱除了91 %的TC（20 mg L−1,100 mL）。理论计算证实了异质结内电荷动力学的改善，支持有效的光催化降解。LC-MS分析和DFT计算揭示了TC的潜在降解中间体和途径。研究发现，TC显著抑制小麦幼苗生长和叶绿素生成，而其中间体的抑制作用可以忽略不计。此外，TC的生态毒性也显著降低，对大肠杆菌和金黄色葡萄球菌的抑制区减少。因此，原位光- fenton复合材料在抗生素去除方面具有很大的实际应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Rational design of a novel MIL-100(Fe)/TpPa-1 COF direct Z-scheme heterojunction for photo-self-Fenton removal of antibiotics: Performance and ecotoxicity assessment

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Rational design of a novel MIL-100(Fe)/TpPa-1 COF direct Z-scheme heterojunction for photo-self-Fenton removal of antibiotics: Performance and ecotoxicity assessment

The charge separation of photogenerated carriers in the photo-self-Fenton system still limits its ability to remove organic contaminants. To overcome this limitation, a novel MOF/COF direct Z-scheme-based photo-self-Fenton system (MIL-100(Fe)/TpPa-1 COF, MT2) was designed and synthesized for removing tetracycline hydrochloride (TC) from water. As a result, 91 % of TC (20 mg L⁻¹, 100 mL) was removed by MT2 (0.08 g L⁻¹) within 120 min, driven by improved charge separation and the synergistic effects of h⁺, OH, and O₂^–. Theoretical calculations confirmed the improved charge dynamics within the heterojunction, supporting efficient photocatalytic degradation. LC-MS analysis and DFT calculations revealed the potential degradation intermediates and pathways of TC. TC was found to significantly inhibit wheat seedling growth and chlorophyll production, while its intermediates exhibited negligible inhibitory effects. Additionally, the ecotoxicity of TC was significantly reduced, as evidenced by the decreased inhibition zones for Escherichia coli and Staphylococcus aureus. Thus, the in-situ photo-Fenton composite shows great potential for practical applications in antibiotics removal.

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.