n掺杂tio2 -生物炭纳米复合材料在实际废水中光催化降解环丙沙星和磺胺甲恶唑的应用

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-09-02 DOI:10.1016/j.mseb.2025.118735

Hailu Ashebir , Saeideh Babaee , Palesa Diale , Abebe Worku , Titus Msagati , Jemal Fito Nure

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引用次数: 0

摘要

本研究旨在通过合成Prosopis Juliflora （BC）衍生的生物炭，制备n掺杂TiO2/BC纳米复合材料，用于降解环丙沙星（CIP）和磺胺甲恶唑（SMZ）。采用溶胶-凝胶法制备该材料，并通过XRD、FTIR、SEM、EDX和UV-Vis漫反射光谱（DRS）对其进行分析。在汞弧灯紫外照射和阳光直射下测试降解性能。结果表明，该材料形成了高度结晶的锐钛矿相，具有2.56 eV的窄带隙和287.5 m2/g的大表面积，具有较强的光催化活性。在120分钟内，纳米复合材料对SMZ的降解效率为98.6%，对CIP的降解效率为97.67%。在实际的制药废水中，实验室规模试验的效率降至85.2%，小规模研究的效率降至78.4%。纳米复合材料在5个循环中保持稳定，效率保持在84.5%左右。这项技术可以通过减轻水污染来解决重要的环境和公共卫生问题。

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The application of N-doped TiO2-biochar nanocomposite for photocatalytic degradation of ciprofloxacin and Sulfamethoxazole in real wastewater

This study aimed to synthesize biochar derived from Prosopis Juliflora (BC) to create N-doped TiO2/BC nanocomposites for degrading ciprofloxacin (CIP) and sulfamethoxazole (SMZ). The material was prepared using a sol-gel method and analyzed through XRD, FTIR, SEM, EDX, and UV-Vis diffuse reflectance spectroscopy (DRS) . Degradation performance was tested under irradiation with a mercury arc lamp UV and direct sunlight. Results showed the formation of a highly crystalline anatase phase, a narrow bandgap of 2.56 eV, and a large surface area of 287.5 m²/g, which supports strong photocatalytic activity. The nanocomposites achieved high degradation efficiencies of 98.6% for SMZ and 97.67% for CIP in 120 minutes. In real pharmaceutical wastewater, the efficiencies dropped to 85.2% in laboratory-scale tests and 78.4% in small-scale studies. The nanocomposite remained stable over five cycles, maintaining about 84.5% efficiency. This technology can address important environmental and public health concerns by mitigating water pollution.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.