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IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2025-03-31 DOI:10.1007/s11270-025-07931-1

Xiangnan Zhang, Junhan Dai, Jie Ding, Zheng Li, Yuye Zhang, Hongbo Li, Na Li

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引用次数: 0

摘要

抗生素在水生生态系统中的持续存在对环境和人类健康构成了严重威胁。在此，我们报告了一种新型多巴胺修饰的 Fe3O4@C@DA 纳米复合材料，该材料通过共价酰胺化合成，可高效去除抗生素。该材料的核壳结构将 Fe3O4 纳米颗粒与碳基质结合在一起，并通过多巴胺功能化以增强亲水性和稳定性。综合表征证实了多巴胺的成功接枝，产生了一种超顺磁性吸附剂（41.0 emu/g）。该吸附剂对环丙沙星（CIP）和四环素（TC）具有优异的吸附性能，最大吸附容量分别为 42.5 毫克/克（CIP）和 28.4 毫克/克（TC）。动力学研究表明，该材料在 8 小时（CIP）和 6 小时（TC）内迅速达到平衡，伪二阶动力学（R2 > 0.999）对其进行了很好的描述，而朗缪尔等温线（R2 > 0.98）表明，单层化学吸附由氢键、π-π 相互作用和静电引力主导。值得注意的是，经过五个再生周期后，该材料的吸附效率仍保持在 60%。这项研究通过共价官能化、多机制吸附和可扩展设计的协同作用，推进了抗生素修复技术的发展，为水净化提供了一种可持续的解决方案。

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A Novel Strategy for Antibiotic Removal from Wastewater: Dopamine-Modified Fe3O4@C@DA Composite Nanomaterial Adsorbent

The persistent presence of antibiotics in aquatic ecosystems poses severe risks to environmental and human health. Herein, we report a novel dopamine-modified Fe₃O₄@C@DA nanocomposite synthesized via covalent amidation for efficient antibiotic removal. The material’s core–shell structure integrates Fe₃O₄ nanoparticles with a carbon matrix, functionalized by dopamine to enhance hydrophilicity and stability. Comprehensive characterization confirmed successful dopamine grafting, yielding a superparamagnetic adsorbent (41.0 emu/g). The adsorbent demonstrated exceptional performance for ciprofloxacin (CIP) and tetracycline (TC), achieving maximum capacities of 42.5 mg/g (CIP) and 28.4 mg/g (TC). Kinetic studies revealed rapid equilibration within 8 h (CIP) and 6 h (TC), well-described by pseudo-second-order kinetics (R² > 0.999), while Langmuir isotherms (R² > 0.98) indicated monolayer chemisorption dominated by hydrogen bonding, π-π interactions, and electrostatic attraction. Remarkably, the material retained > 60% adsorption efficiency after five regeneration cycles. This work advances antibiotic remediation by synergizing covalent functionalization, multi-mechanistic adsorption, and scalable design, offering a sustainable solution for water purification.

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.