Degradation of Tetracycline in Medical Wastewater by Fe ₂ O ₃ /CuO Photocatalyst Under Visible Light

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects Pub Date : 2026-01-10 DOI:10.1142/s1793292026500608

Siqi Wang, Yu Zhang, Lin Xu Feng, Ziying Tian, Guofei Huang, Jun Yu, Qiang Li

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引用次数: 0

Abstract

To explore the development of photocatalytic materials which were highly efficient, nonpolluting, have low production cost and are recyclable for degrading tetracycline (TC) in medical wastewater. In the study, Fe 2 O 3 was selected as the photocatalyst, and CuO was introduced to modify it to produce the Fe 2 O 3 /CuO photocatalyst. The Fe 2 O 3 /CuO composite photocatalysts were investigated by characterization means such as XRD, SEM, UV–Vis DRS and EPR. The enhanced photocatalytic activity of the Fe 2 O 3 /CuO was attributed to CuO doping, which modulates the band structure, creating a new bandgap that extends the absorption spectrum and improves the utilization of visible light. Additionally, Fe 2 O 3 serves as an electron donor, significantly accelerating the separation of photogenerated electron–hole pairs. The effects of doping ratio, dosage, initial concentration of TC and illumination time on the degradation of TC in medical wastewater by Fe 2 O 3 /CuO composite photocatalysts were investigated. Under the optimized conditions, the degradation rate of TC by the Fe 2 O 3 /CuO photocatalyst was 94.26%. The removal rate of the loaded Fe 2 O 3 /CuO-4 photocatalyst remained above 90% after five repetitions. The Fe 2 O 3 /CuO-4 photocatalyst was suitable for practical application in the treatment of antibiotics in medical wastewater due to its simple preparation and good photocatalytic ability, and reusability.

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可见光下fe2o3 /CuO光催化剂降解医疗废水中的四环素

探索开发高效、无污染、生产成本低、可循环利用的光催化材料降解医疗废水中的四环素。本研究选择fe2o3作为光催化剂，引入CuO对其进行改性，制备出fe2o3 /CuO光催化剂。采用XRD、SEM、UV-Vis DRS、EPR等表征手段对fe2o3 /CuO复合光催化剂进行了表征。fe2o3 /CuO的光催化活性增强是由于CuO掺杂调节了能带结构，形成了新的带隙，延长了吸收光谱，提高了可见光的利用率。此外，fe2o3作为电子给体，显著加速了光生电子-空穴对的分离。考察了掺杂比、投加量、初始TC浓度和光照时间对fe2o3 /CuO复合光催化剂降解医疗废水中TC的影响。在优化条件下，fe2o3 /CuO光催化剂对TC的降解率为94.26%。负载的fe2o3 /CuO-4光催化剂经过5次重复后，去除率保持在90%以上。fe2o3 /CuO-4光催化剂制备简单，光催化性能好，可重复使用，适合实际应用于医疗废水中抗生素的处理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano-Structures & Nano-Objects Physics and Astronomy-Condensed Matter Physics

CiteScore

9.20

自引率

0.00%

发文量

审稿时长

22 days

期刊介绍： Nano-Structures & Nano-Objects is a new journal devoted to all aspects of the synthesis and the properties of this new flourishing domain. The journal is devoted to novel architectures at the nano-level with an emphasis on new synthesis and characterization methods. The journal is focused on the objects rather than on their applications. However, the research for new applications of original nano-structures & nano-objects in various fields such as nano-electronics, energy conversion, catalysis, drug delivery and nano-medicine is also welcome. The scope of Nano-Structures & Nano-Objects involves: -Metal and alloy nanoparticles with complex nanostructures such as shape control, core-shell and dumbells -Oxide nanoparticles and nanostructures, with complex oxide/metal, oxide/surface and oxide /organic interfaces -Inorganic semi-conducting nanoparticles (quantum dots) with an emphasis on new phases, structures, shapes and complexity -Nanostructures involving molecular inorganic species such as nanoparticles of coordination compounds, molecular magnets, spin transition nanoparticles etc. or organic nano-objects, in particular for molecular electronics -Nanostructured materials such as nano-MOFs and nano-zeolites -Hetero-junctions between molecules and nano-objects, between different nano-objects & nanostructures or between nano-objects & nanostructures and surfaces -Methods of characterization specific of the nano size or adapted for the nano size such as X-ray and neutron scattering, light scattering, NMR, Raman, Plasmonics, near field microscopies, various TEM and SEM techniques, magnetic studies, etc .

Degradation of Tetracycline in Medical Wastewater by Fe 2 O 3 /CuO Photocatalyst Under Visible Light

Abstract

Degradation of Tetracycline in Medical Wastewater by Fe ₂ O ₃ /CuO Photocatalyst Under Visible Light