Surfaces and Interfaces最新文献_第5页

Schottky diodes based on polyaniline-graphene nanocomposites: Tuning barrier characteristics through swift heavy ion irradiation 基于聚苯胺-石墨烯纳米复合材料的肖特基二极管：通过快速重离子辐照调谐势垒特性

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-02-04 DOI: 10.1016/j.surfin.2026.108673

Daniel C. Chilukusha , Jean J. Mboukam , Vusani M. Maphiri , Ncholu Manyala , Mandla Msimanga

Current chemical and electrochemical methods lack the nanoscale control required to optimize polymer–metal interfaces for electronic applications. In this work, swift heavy ion (SHI) irradiation is employed to tune the barrier characteristics of Schottky diodes based on polyaniline–graphene nanocomposites (PANI-G NCs) and aluminum. Current density–voltage (J–V) measurements confirmed rectifying behavior in all devices. Key parameters including ideality factor (n), barrier height (Φ_b), and rectification ratio (γ) were extracted from semi-logarithmic J–V plots. The unirradiated PANI device showed the lowest n (3.8) and the highest γ (98.6). Incorporation of graphene and SHI exposure led to decreased γ and Φ_b, and increased n, attributed to interfacial inhomogeneities and oxide formation. Differential resistance (dV/dI vs. V) analysis revealed a decline in shunt resistance with fluence, making series resistance (R_s) dominant in charge transport. Cheung’s and Norde’s methods further showed that R_s decreased with fluence, indicating enhanced charge injection. The energy distribution of interface states shifted exponentially toward the valence band edge with increasing bias and dose. At higher voltages, irradiated devices transitioned from trap-limited to trap-free space-charge-limited conduction, suggesting SHI exposure promotes carrier detrapping. These results highlight the tunability of PANI-G SBDs via SHI irradiation and their potential for applications such as Schottky-type photodetectors and low-power rectifying elements in flexible optoelectronic systems.

目前的化学和电化学方法缺乏优化电子应用的聚合物-金属界面所需的纳米级控制。在这项工作中，利用快速重离子（SHI）辐照来调节基于聚苯胺-石墨烯纳米复合材料（PANI-G NCs）和铝的肖特基二极管的势垒特性。电流密度-电压（J-V）测量证实了所有器件的整流行为。从半对数J-V图中提取理想因子(n)、势垒高度（Φb）和整流比（γ）等关键参数。未辐照的PANI器件显示出最低的n（3.8）和最高的γ(98.6)。石墨烯和SHI暴露导致γ和Φb降低，n增加，这是由于界面不均匀性和氧化物的形成。差分电阻（dV/dI vs. V）分析显示，分流电阻随通量的减小而减小，串联电阻（Rs）在电荷输运中占主导地位。张’s和Norde’s的方法进一步表明，Rs随着通量的增加而降低，表明电荷注入增强。随着偏置和剂量的增加，界面态的能量分布呈指数向价带边缘偏移。在更高的电压下，辐照器件从陷阱限制过渡到无陷阱的空间电荷限制传导，表明SHI暴露促进载流子脱陷阱。这些结果突出了PANI-G sdd通过SHI辐照的可调性及其在柔性光电系统中的应用潜力，如肖特基型光电探测器和低功率整流元件。

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引用次数: 0

Synchronous separation of Al foil and leaching of metals in cathode materials from spent lithium-ion batteries by a deep eutectic solvent 用深度共晶溶剂从废锂离子电池中同步分离铝箔和浸出正极材料中的金属

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-02-04 DOI: 10.1016/j.surfin.2026.108678

Shang Liu , Yaoguo Huang , Linlin Chen , Xianfu Sun , Lipeng Zhang , Yali Zhang

Developing efficient and eco-friendly metal recovery technologies has emerged as a key research focus. This study innovatively constructed a deep eutectic solvent (DES) system with betaine-glacial acetic acid, proposing a novel technology to simultaneously achieve Al foil separation from cathode active materials and metals leaching in ternary cathode sheets. The effects of DES system on the separation effect and leaching efficiency under different conditions were systematically investigated, and the mechanism of separation and leaching was elucidated. Experimental results demonstrated that under optimized conditions: betaine-to-glacial acetic acid molar ratio of 1:4, liquid-to-solid ratio of 40:1, reaction temperature of 140 °C, and reaction duration of 3 h, both separation and leaching efficiencies for target metals exceeded 99.99%. This process exhibits remarkable advantages in terms of green efficiency and low energy consumption, offering a new pathway for the recycling of spent lithium-ion batteries.

开发高效、环保的金属回收技术已成为研究热点。本研究创新性地构建了甜菜碱-冰醋酸深共熔溶剂体系，提出了一种同时实现正极活性物质Al箔分离和三元正极片金属浸出的新技术。系统研究了不同条件下DES体系对分离效果和浸出效率的影响，并阐明了分离浸出的机理。实验结果表明，在甜菜碱与冰醋酸摩尔比为1:4、液固比为40:1、反应温度为140℃、反应时间为3 h的优化条件下，目标金属的分离和浸出效率均超过99.99%。该工艺在绿色效率和低能耗方面具有显著的优势，为废旧锂离子电池的回收利用提供了一条新的途径。

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引用次数: 0

Dual-action Ag/ZnO-Polyacrylate nano-emulsion for enhanced lubrication and antimicrobial finishing of tanned leather 双作用银/锌-聚丙烯酸酯纳米乳液增强润滑和抗菌整理鞣革

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-02-03 DOI: 10.1016/j.surfin.2026.108660

Hamed Elsayed , EL-Shahat H.A. Nashy , Hossam M. El-Masry , Mohamed Shaker , M.E. Abd El-Aziz

The leather industry's reliance on volatile organic compounds (VOCs) and chromium poses significant health and environmental risks. Addressing the environmental and health hazards associated with conventional leather finishing, this study develops and characterizes novel water-based polyacrylate nano-emulsions for multifunctional leather treatment. Two distinct formulations, poly(butyl acrylate-co-styrene) (PBS) and poly(butyl acrylate-co-methyl methacrylate) (PBM), were synthesized and incorporated with silver (Ag-NPs) and zinc oxide (ZnONPs) nanoparticles to serve as a high-performance binder. Thermal analysis, Fourier-Transform Infrared spectroscopy (FTIR), Transmission Electron Microscopy (TEM), and a zeta sizer all verified that stable nano-emulsions with particle sizes below 300 nm and zeta potentials larger than -30 mV had been formed. Comprehensive evaluations were conducted on the treated leather's surface morphology, antibacterial efficiency, and important physical qualities, such as water vapor permeability (WVP) and mechanical strength. In comparison to the untreated leather control, leather treated with the PBM2 (2:1) formulation exhibited superior mechanical performance, specifically a 237% increase in tensile strength (reaching 76.69 kg/cm²) and a 98% increase in elongation at break (reaching 88.2%), and improvements in water permeability and hardness. The nanoparticle-integrated nano-emulsion provided excellent antimicrobial protection, achieving 68% reduction of Staphylococcus aureus (Gram-positive), 97% reduction of Pseudomonas aeruginosa (Gram-negative), and >99% reduction of Candida albicans (fungi). These findings validate the potential of this eco-friendly nano-emulsion system as a safe and effective finishing agent, offering a promising alternative for sustainable leather production.

皮革工业对挥发性有机化合物（VOCs）和铬的依赖构成了重大的健康和环境风险。针对与传统皮革整理相关的环境和健康危害，本研究开发并表征了用于多功能皮革处理的新型水基聚丙烯酸酯纳米乳液。合成了两种不同的配方，聚（丙烯酸丁酯-co-苯乙烯）（PBS）和聚（丙烯酸丁酯-co-甲基丙烯酸甲酯）（PBM），并与银（Ag-NPs）和氧化锌（ZnONPs）纳米颗粒结合，作为高性能粘合剂。热分析、傅里叶变换红外光谱（FTIR）、透射电镜（TEM）和zeta浆料机均证实制备了粒径小于300 nm、zeta电位大于-30 mV的稳定纳米乳液。对处理后的皮革的表面形貌、抗菌效率以及重要的物理品质，如透气性（WVP）和机械强度进行了综合评价。与未处理皮革相比，PBM2（2:1）配方处理的皮革表现出优越的机械性能，特别是抗拉强度提高237%（达到76.69 kg/cm2），断裂伸长率提高98%（达到88.2%），透水性和硬度都有所改善。纳米颗粒集成纳米乳剂提供了出色的抗菌保护，金黄色葡萄球菌（革兰氏阳性）减少68%，铜绿假单胞菌（革兰氏阴性）减少97%，白色念珠菌（真菌）减少99%。这些发现验证了这种环保纳米乳液系统作为安全有效的整理剂的潜力，为可持续皮革生产提供了一个有前途的选择。

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引用次数: 0

Digital image processing-assisted characterization and optimization of abrasion resistance in polytetrafluoroethylene composite coatings with ceramic fillers 数字图像处理辅助陶瓷填料聚四氟乙烯复合涂层耐磨性表征与优化

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-02-03 DOI: 10.1016/j.surfin.2026.108671

Jabir Ismaeili , Ayça Ata , Elif Alyamaç-Seydibeyoğlu , Mustafa Demircioğlu , Bikem Övez

This study aims to enhance the abrasion resistance of polytetrafluoroethylene (PTFE) through the development of composite coatings incorporating ceramic fillers: boron carbide (B₄C), black silicon carbide (B-SiC), green silicon carbide (G-SiC), and aluminum oxide (Al₂O₃). The coatings were applied to aluminum substrates and evaluated using conventional gravimetric measurements alongside a novel digital image processing (DIP) technique, offering high-resolution wear analysis. The integration of DIP with surface characterization and statistical optimization provides both visual and quantitative insights into wear evolution and abrasion behavior. The effects of filler content and dry film thickness (DFT) on abrasion performance were optimized using response surface methodology (RSM). DIP results demonstrated a strong correlation with gravimetric data (R² > 0.97), validating its effectiveness as a quantitative wear assessment tool. Optimal abrasion resistance was achieved at filler concentrations of 10–11 wt% and DFT values of 30–32 µm. PTFE-B₄C coatings exhibited the highest thermal stability and crystallinity, as confirmed by Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD), without altering the chemical structure of PTFE. By optimizing filler content and film thickness, and employing digital image processing for precise wear quantification, this research advances the development of durable PTFE composite coatings for demanding industrial applications. Overall, the study establishes a practical, data-driven framework linking surface characterization, digital analysis, and performance evaluation in advanced coating systems.

本研究旨在通过开发含碳化硼（B4C）、黑色碳化硅（B-SiC）、绿色碳化硅（G-SiC）和氧化铝（Al2O3）陶瓷填料的复合涂层来提高聚四氟乙烯（PTFE）的耐磨性。该涂层应用于铝基板，并使用传统的重量测量和新型数字图像处理（DIP）技术进行评估，提供高分辨率的磨损分析。DIP与表面表征和统计优化的集成为磨损演变和磨损行为提供了可视化和定量的见解。利用响应面法（RSM）优化了填料含量和干膜厚度对耐磨性能的影响。DIP结果显示与重力数据有很强的相关性（R2 > 0.97），验证了其作为定量磨损评估工具的有效性。填料浓度为10 - 11wt %， DFT值为30-32µm时，耐磨性最佳。傅里叶变换红外光谱（FTIR）和x射线衍射（XRD）证实，PTFE- b4c涂层具有最高的热稳定性和结晶度，且PTFE的化学结构没有改变。通过优化填料含量和薄膜厚度，并采用数字图像处理进行精确的磨损量化，本研究推动了耐用PTFE复合涂层的开发，以满足苛刻的工业应用。总体而言，该研究建立了一个实用的、数据驱动的框架，将先进涂层系统的表面表征、数字分析和性能评估联系起来。

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引用次数: 0

Environmentally friendly magnetorheological fluids based on hydrogen bonds surface stabilized nickel microparticles 基于氢键表面稳定镍微粒的环保磁流变液

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-02-03 DOI: 10.1016/j.surfin.2026.108669

George Stoian, Daniel Ghercă, Gabriel Ababei, Oana-Georgiana Dragoș-Pînzaru, Marian Grigoraș, Horia Chiriac, Nicoleta Lupu, Georgiana Bălușescu

This study presents the development of magnetorheological fluids (MRFs) using a hydrophobic deep eutectic solvent (HDES) with low viscosity, synthesized from eco-friendly, cost-effective DL-menthol and decanoic acid. The HDES serves as a biodegradable carrier fluid, enabling safer disposal and reducing environmental and operational hazards. Due to its hydrogen - bond interactions and low viscosity, HDES efficiently forms MRFs with nickel microparticles of different morphologies - spherical, filamentary, and rough - exhibiting superior magnetorheological performance compared to conventional engine oil - based MRFs. Key improvements include higher viscosity, enhanced dynamic and static yield stress, greater shear stress resistance, and increased yield strength, with performance ranking filamentary > rough > spherical. The viscoelastic behaviour of MRFs is strongly influenced by particle morphology, carrier fluid, and applied magnetic field. Filamentary particles produce the highest moduli and the broadest linear viscoelastic regions, while HDES - based MRFs consistently outperform engine oil-based systems in structural stability and field responsiveness. Strain amplitude, magnetosweep, and frequency - dependent measurements reveal tunable microstructures, highlighting the critical role of particle shape and carrier fluid in optimizing both dynamic and static performance. These findings demonstrate that HDES - based MRFs offer a high - performance, environmentally benign platform for advanced engineering applications.

本研究介绍了一种低粘度的疏水深度共晶溶剂（HDES）的磁流变流体（MRFs）的开发，该溶剂由环保、经济的dl -薄荷醇和癸酸合成。HDES作为可生物降解的载液，可以更安全地处理，减少对环境和操作的危害。由于其氢键相互作用和低粘度，HDES可以有效地与不同形态的镍微粒形成磁流变fs（球形，丝状和粗糙），与传统的机油基磁流变fs相比，表现出优越的磁流变性能。主要的改进包括更高的粘度，增强的动态和静态屈服应力，更大的抗剪切应力，以及更高的屈服强度，其性能排名为长丝>；粗糙>；球形。磁流变材料的粘弹性受颗粒形态、载体流体和外加磁场的强烈影响。丝状颗粒产生最高的模量和最宽的线性粘弹性区域，而基于HDES的MRFs在结构稳定性和现场响应性方面始终优于基于机油的系统。应变幅度、磁扫描和频率相关的测量揭示了可调谐的微结构，突出了颗粒形状和载体流体在优化动态和静态性能方面的关键作用。这些发现表明，基于HDES的mrf为先进的工程应用提供了一个高性能、环保的平台。

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引用次数: 0

Selective cleaning of metal surfaces by mobile microplasma jet 移动微等离子体射流对金属表面的选择性清洗

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-02-03 DOI: 10.1016/j.surfin.2026.108674

Jian Shen , Fajun Wang , Wei Wei , Hongyu Huang , Liangliang Lin

Conventional methods for cleaning metal surfaces suffer from limitations such as causing microscopic surface damage, consuming excessive organic solvents, and posing environmental and health risks. Additionally, they lack localized and selective cleaning capabilities, often requiring full-surface treatment even for confined contamination. This work integrates microplasma with 3D printing technique to develop a mobile microplasma jet, which is capable of directly and locally removing mineral oil-carbon black contaminants from aluminum surfaces without organic solvents. Through systematic experiments, the cleaning process was analyzed, and optimal conditions were identified by evaluating decolorization efficiency and surface energy parameters. The optimal processing parameters were determined to be plasma power of 21 W, O₂ content of 2%, total gas flow rate of 25 sccm, and plasma processing time of 4 min. Under this condition, both carbon black and mineral oil contaminants were effectively removed, with improved corrosion resistance due to the formation of oxide films. The mobile microplasma jet was further applied to remove rhodamine B and malachite green stains following a pre-designed electrode motion path, demonstrating high flexibility and versatility in targeting specific contaminated areas. This innovative approach shows great promise for the selective cleaning of delicate devices.

传统的金属表面清洁方法存在局限性，如造成微观表面损伤，消耗过多的有机溶剂，并带来环境和健康风险。此外，它们缺乏局部和选择性清洁能力，即使对有限的污染也经常需要全表面处理。这项工作将微等离子体与3D打印技术相结合，开发了一种可移动的微等离子体射流，该射流能够直接和局部去除铝表面的矿物油-炭黑污染物，而无需有机溶剂。通过系统实验，分析了清洗工艺，并通过评价脱色效率和表面能参数确定了最佳工艺条件。确定最佳工艺参数为等离子体功率21 W， O2含量2%，总气量25 sccm，等离子体处理时间4 min。在这种条件下，炭黑和矿物油污染物都被有效地去除，并且由于形成氧化膜而提高了耐腐蚀性。移动微等离子体射流进一步应用于去除罗丹明B和孔雀石绿污渍，遵循预先设计的电极运动路径，展示了针对特定污染区域的高灵活性和多功能性。这种创新的方法为精密设备的选择性清洁显示了巨大的希望。

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引用次数: 0

Shape of a particle-laden bubble at a liquid surface 液体表面上充满粒子的气泡的形状

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-02-03 DOI: 10.1016/j.surfin.2026.108601

Xiang Zeng , Hu Sun , Sihang Rao , Lizi Qin , Qingfei Fu , Bingqiang Ji

Particle-laden bubbles are widely observed in nature and industrial applications such as foaming, emulsification, froth flotation, and gas evolution reactions, with the shape of bubbles at the liquid surface being important for understanding these processes. Although the static shape of bare bubbles has been well studied, how an attached particle affects the bubble shape remains elusive. Here we establish a theoretical model based on force equilibrium to describe the profile of a particle-laden bubble at the liquid surface. The accuracy of the theoretical model is validated to well describe the experimental observations. We find that increasing the particle size and density pulls the bubble down and stretches the bubble vertically, yielding a smaller bubble cap angle and aspect ratio. However, the increase in particle contact angle barely changes the bubble cap angle and causes the aspect ratio to first increase and then decrease. Analysis of the acting forces indicates that the bubble cap is pulled down mainly by particle gravity, while the bubble aspect ratio is under the combination effect of particle gravity and the curvature at the three-phase contact line that is influenced by the contact angle. Our findings can provide guidance for further studies on the dynamics of particle-contaminated bubbles.

载颗粒气泡在自然和工业应用中被广泛观察到，如泡沫、乳化、泡沫浮选和气体释放反应，液体表面气泡的形状对于理解这些过程很重要。尽管裸气泡的静态形状已经得到了很好的研究，但附着的粒子如何影响气泡形状仍然是难以捉摸的。本文建立了一种基于力平衡的理论模型来描述在液体表面带有粒子的气泡的轮廓。验证了理论模型能较好地描述实验观测结果的准确性。我们发现，增加颗粒大小和密度会使气泡向下拉，并使气泡垂直拉伸，从而产生较小的气泡帽角和宽高比。然而，颗粒接触角的增加几乎没有改变泡帽角，导致长径比先增大后减小。作用力分析表明，气泡帽的下拉主要受粒子重力的作用，而气泡长径比则受粒子重力和三相接触线曲率的共同作用，而三相接触线曲率受接触角的影响。研究结果可为颗粒污染气泡动力学的进一步研究提供指导。

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引用次数: 0

Exploring a synthesized series of β- bromo‑substituted copper porphyrins for the degradation of Tetracycline and Ciprofloxacin from contaminated water 探索合成一系列β-溴取代铜卟啉降解污水中的四环素和环丙沙星

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-02-03 DOI: 10.1016/j.surfin.2026.108670

Ishfaq Ahmad Lone , Nasir Ahmad Chopan , Tahir Ahmad Dar , Kharu Nisa , Malik Wahid , Ravi Kumar

In this study, we synthesized a series of β‑bromo-substituted copper metal porphyrins and explored them for photodegradation. Various spectroscopy techniques have characterized these synthesized compounds, including ¹HNMR, HRMS, UV–visible, XPS, and FESEM-EDX. Among these substituted porphyrins, octa‑bromo copper porphyrin exhibited remarkable photocatalytic activity for the photodegradation of ciprofloxacin (CIP) and tetracycline (TC) under visible light irradiation. The effects of initial CIP, TC concentration, and other factors, such as catalyst dosage, pH, inorganic salts, etc., were thoroughly investigated. The excitation-emission spectra were used further to monitor the degradation of CIP and TC molecules. It was found that 99% and 96% degradation of CIP and TC, respectively, were observed using Br₈CuTPP as a photocatalyst. A plausible mechanism for the degradation of CIP and TC was proposed using different scavengers. Photoluminescence and electrochemical impedance indicate that the suppression of the recombination of electron-hole pairs and the rapid transfer and migration of electrons and holes can be achieved in different bromo‑substituted porphyrins as a photocatalytic system. The enhanced photocatalytic performances of Br₈CuTPP, as compared to the rest of the photocatalysts, could be credited to the accelerated interfacial charge transfer process and the improved separation of the photogenerated electron-hole pairs. Kinetic studies have also been carried out on these photocatalysts, which reveal that they follow the pseudo-first-order kinetics.

在本研究中，我们合成了一系列β -溴取代的铜金属卟啉，并探索了它们的光降解能力。各种光谱技术对这些合成的化合物进行了表征，包括1HNMR、HRMS、UV-visible、XPS和FESEM-EDX。在这些取代卟啉中，八溴铜卟啉在可见光照射下对环丙沙星（CIP）和四环素（TC）具有显著的光催化活性。考察了初始CIP、TC浓度以及催化剂用量、pH、无机盐等因素对反应的影响。利用激发发射光谱进一步监测了CIP和TC分子的降解情况。结果表明，Br8CuTPP光催化剂对CIP和TC的降解率分别为99%和96%。提出了不同清除剂对CIP和TC的降解机理。光致发光和电化学阻抗表明，不同的溴取代卟啉作为光催化体系可以抑制电子-空穴对的复合，实现电子和空穴的快速转移和迁移。与其他光催化剂相比，Br8CuTPP光催化性能的增强可归因于加速了界面电荷转移过程和光生电子-空穴对分离的改善。对这些光催化剂进行了动力学研究，结果表明它们符合准一级动力学。

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引用次数: 0

Carboxymethyl cellulose-based magnetite bimetallic metal-organic framework hydrogel beads as effective absorbents for removing hazardous amiodarone from aqueous solutions 羧甲基纤维素基磁铁矿双金属金属-有机框架水凝胶珠作为有效吸收剂去除水溶液中的有害胺碘酮

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-02-03 DOI: 10.1016/j.surfin.2026.108672

Mahdiyeh Ahmadi, Mohammad Hossein Alizadeh, Hassan Namazi

In recent years, the use of nanocomposites based on metal-organic frameworks (MOFs) and natural polymers for removing pollutant compounds from aqueous environments has received more attention. Here, an anionic magnetic nanocomposite absorbent was prepared and evaluated for removing cationic amiodarone (AMD) from an aqueous solution. Initially, the magnetic MOF was prepared via the in-situ method, and carboxymethylcellulose (CMC) was used as a pH-sensitive neutral polymer coat. The correct synthesis of the (X%)Fe₃O₄/Meta-organic framework(Cu-Ag)@Caboxymethyl cellulose nanocomposite beads ((X%)M/MOF(Cu-Ag)@CMC nanocomposite beads) was characterized using FT-IR, XRD, SEM, EDX, AFM, DLS, ZETA, BET, VSM, and TGA analyses. The maximum adsorption of (5%)M/MOF(Cu-Ag)@CMC, (10%)M/MOF(Cu-Ag)@CMC, and (15%)M/MOF(Cu-Ag)@CMC were 94.23±2.89% (Adsorbent dosage: 20 mg, pH: 4, and AMD concentration: 100 µg/mL), 96.67±4.07% (Adsorbent dosage: 40 mg, pH: 4, and AMD concentration: 100 µg/mL), and 98.76±3.56% (Adsorbent dosage: 60 mg, pH: 3, and AMD concentration: 100 µg/mL), and Q_M obtained as 111 mg/g, 112 mg/g, and 113 mg/g in aquatic solution, respectively. Finally, the adsorption mechanism of AMD by magnetic nanocomposite beads was investigated with isotherms and adsorption kinetics, which showed that the prepared absorbents mostly follow the pseudo-second-order equation and the Langmuir equation, respectively, indicating the monolayer chemical interaction. Compared to other studies, these absorbents demonstrated relatively good efficiency.

近年来，利用基于金属有机骨架（MOFs）和天然聚合物的纳米复合材料去除水中污染物受到越来越多的关注。本文制备了一种阴离子磁性纳米复合吸附剂，并对其去除水溶液中的阳离子胺碘酮（AMD）进行了研究。首先，通过原位法制备磁性MOF，并采用羧甲基纤维素（CMC）作为ph敏感的中性聚合物涂层。采用FT-IR、XRD、SEM、EDX、AFM、DLS、ZETA、BET、VSM和TGA等分析手段对（X%）Fe3O4/ Cu-Ag @羧甲基纤维素纳米复合微珠(（X%)M/MOF(Cu-Ag)@CMC纳米复合微珠）的正确合成进行了表征。（5%）M/MOF(Cu-Ag)@CMC、（10%）M/MOF(Cu-Ag)@CMC和（15%）M/MOF(Cu-Ag)@CMC的最大吸附量分别为（94.23±2.89%）（吸附剂用量：20 mg， pH: 4， AMD浓度：100µg/mL）、（96.67±4.07%）（吸附剂用量：40 mg， pH: 4， AMD浓度：100µg/mL）和（98.76±3.56%）（吸附剂用量：60 mg， pH: 3， AMD浓度：100µg/mL）， QM在水溶液中的最大吸附量分别为111 mg/g、112 mg/g和113 mg/g。最后，通过等温线和吸附动力学研究了磁性纳米复合微珠对AMD的吸附机理，结果表明，制备的吸附剂大多遵循拟二阶方程和Langmuir方程，表明其存在单层化学相互作用。与其他研究相比，这些吸收剂显示出相对较好的效率。

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引用次数: 0

Insights into electrochemical peroxymonosulfate activation on a robust stepwise-grown Co3O4/CNT/NF anode for antibiotic degradation 在稳健的逐步生长的Co3O4/CNT/NF阳极上对抗生素降解的电化学过氧单硫酸盐活化的见解

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-02-02 DOI: 10.1016/j.surfin.2026.108665

Zhiyin Xie , Zhihong Li , Zihan Liu , Hongling Bai , Miao Lv , Jingren Yang , Kai Su , Xueyang Zhao , Muhammad Hassan , Zhengjun Gong , Mika Sillanpää , Junfeng Niu

Electrochemical peroxymonosulfate (PMS) activation offers a promising pathway to combat antibiotic contamination, but electrode instability and poorly understood mechanisms of anodic activation remain significant challenges. Herein, a robust nickel foam supported carbon nanotube and Co₃O₄ (Co₃O₄/CNT/NF) monolithic anode was constructed via in-situ stepwise growth and employed for efficient PMS activation to degrade antibiotics. Based on the excellent conductivity, dispersion, and anchoring properties of carbon nanotubes, the Co₃O₄/CNT/NF anode achieves 96.78% tetracycline (TC) removal within 60 min (5 mA cm^-2 current density, 1 mM PMS), with the anodic potential decreased to 0.75 V. Moreover, cobalt ion leaching was dramatically reduced by 66.67% (0.17 mg l^-1 vs. 0.51 mg l^-1 CNT-free electrode). Results from single and dual-chamber experiments indicate that anodic PMS activation contributes approximately 45.31% to the overall TC degradation efficiency. EPR and radical quenching experiments revealed a degradation pathway dominated by non-radical processes, with singlet oxygen (¹O₂) as the primary reactive oxygen species (contributing 66%), followed by sulfate radicals (SO₄·⁻) and hydroxyl radicals (·OH). This study underscores the critical role of electrode design in stabilizing active sites and elucidates the dominant non-radical mechanism in anodic PMS activation.

电化学过氧单硫酸盐（PMS）活化是对抗抗生素污染的一种很有前途的途径，但电极的不稳定性和对阳极活化机制的了解仍然是重大的挑战。本文采用原位逐步生长的方法，构建了泡沫镍支撑的碳纳米管和Co3O4 （Co3O4/CNT/NF）单片阳极，并将其用于高效的PMS活化降解抗生素。基于碳纳米管优异的导电性、分散性和锚定性，Co3O4/CNT/NF阳极在5 mA cm-2电流密度、1 mM PMS下，在60 min内达到96.78%的四环素（TC）去除率，阳极电位降至0.75 V。此外，钴离子浸出率显著降低66.67% （0.17 mg l-1 vs. 0.51 mg l-1无碳纳米管电极）。单室和双室实验结果表明，阳极PMS活化对总TC降解效率的贡献约为45.31%。EPR和自由基猝灭实验揭示了一个以非自由基过程为主的降解途径，单线态氧（1O2）是主要的活性氧（贡献66%），其次是硫酸盐自由基（SO4·毒血症）和羟基自由基（·OH）。这项研究强调了电极设计在稳定活性位点中的关键作用，并阐明了PMS阳极活化的主要非自由基机制。

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