Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献_第2页

Reversal of tumor immunosuppression and induction of potent antitumor immunity via albumin-based co-delivery of paclitaxel and a PD-L1 inhibitor 通过白蛋白为基础的紫杉醇和PD-L1抑制剂的联合递送逆转肿瘤免疫抑制和诱导有效的抗肿瘤免疫

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-29 DOI: 10.1016/j.colsurfa.2026.139767

Shuang Lin , Lingjun Zeng , Shiting Xu , Longyun Xiao , Yingying Wang , Bingkun Kang , Kaiqing You , Gezhen Lin , Minxin Zhang , Zhihong Liu , Xin Zhou

Current immune checkpoint inhibitors (ICIs) have transformed the landscape of cancer therapy. BMS-202 (BMS), a small-molecule ICI, offers advantages including lower molecular weight, easier synthesis, reduced cost, higher membrane permeability, and lower immunogenicity compared to macromolecular monoclonal antibodies. Similar to macromolecular ICIs, the efficacy of BMS is also limited by the immunosuppressive tumor microenvironment (TME). Paclitaxel (PTX), a classic anti-tumor drug, not only exerts direct cytotoxic effects but also induces immunogenic cell death (ICD), thereby remodeling the TME and potentially enhancing the efficacy of ICIs. To harness this synergistic potential, this study developed a human serum albumin (HSA)-based nanoplatform for the co-delivery of PTX and BMS, termed PTX/BMS@HSA. In vitro, PTX/BMS@HSA demonstrated significant advantages across multiple key aspects, such as enhanced cellular uptake, increased cytotoxicity, elevated ROS generation, and the induction of ICD. In vivo, this nanoparticle system demonstrated highly efficient accumulation in esophageal tumor tissues. Within the tumor microenvironment, PTX-triggered ICD and BMS-mediated blockade of PD-1/PD-L1 interaction work synergistically to reverse immunosuppression, thereby reactivating and restoring T cell function. These changes resulted in the elevation of dendritic cell maturation to 35.7 % and enhanced CD8⁺ T cell infiltration to 46.8 %. Consequently, PTX/BMS@HSA achieved remarkable tumor growth inhibition, with a suppression rate of 98.1 %, and effectively suppressed metastatic progression. This PTX/BMS@HSA presents a highly promising strategy for synergistic chemo-immunotherapy in esophageal carcinoma.

目前的免疫检查点抑制剂（ICIs）已经改变了癌症治疗的格局。BMS-202 （BMS）是一种小分子ICI，与大分子单克隆抗体相比，具有分子量小、合成容易、成本低、膜通透性高、免疫原性低等优点。与大分子ICIs类似，BMS的疗效也受到免疫抑制肿瘤微环境（TME）的限制。紫杉醇（Paclitaxel， PTX）是一种经典的抗肿瘤药物，它不仅具有直接的细胞毒作用，还能诱导免疫原性细胞死亡（immunogenic cell death， ICD），从而重塑TME，并可能增强ICD的疗效。为了利用这种协同潜力，本研究开发了一种基于人血清白蛋白（HSA）的纳米平台，用于PTX和BMS的共同递送，称为PTX/BMS@HSA。在体外，PTX/BMS@HSA在多个关键方面显示出显著的优势，如增强细胞摄取、增加细胞毒性、增加ROS生成和诱导ICD。在体内，该纳米颗粒系统在食道肿瘤组织中表现出高效的积累。在肿瘤微环境中，ptx触发的ICD和bms介导的PD-1/PD-L1相互作用阻断协同作用，逆转免疫抑制，从而重新激活和恢复T细胞功能。这些变化导致树突状细胞成熟度提高到35.7% %，CD8 + T细胞浸润率提高到46.8% %。因此，PTX/BMS@HSA取得了显著的肿瘤生长抑制作用，抑制率为98.1% %，有效抑制了转移进展。PTX/BMS@HSA是食管癌化疗-免疫协同治疗的一个非常有前景的策略。

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引用次数: 0

Interfacial mechanisms of 6PPD-quinone adsorption on metal-organic framework functionalized nanocellulose aerogels 金属-有机骨架功能化纳米纤维素气凝胶吸附6ppd -醌的界面机理

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-29 DOI: 10.1016/j.colsurfa.2026.139762

Lei Miao , Wei Guo , Haitao Chen , Xiaozheng Sun

Understanding the interfacial adsorption pathways of tire‑derived contaminants on hybrid porous materials is critical for advancing colloid and interface science. Here, we design a hierarchically structured metal-organic framework (MOF)‑functionalized nanocellulose (MOF@NC) aerogel using dicarboxylic cellulose nanocrystal (DCN)‑mediated interfacial bridging, forming a chemically active and spatially interconnected adsorption network. The adsorption of 6PPD‑quinone was evaluated through kinetic, isotherm, and thermodynamic analyses, revealing rapid chemisorption consistent with a pseudo‑second‑order model and monolayer adsorption on energetically uniform sites following the Langmuir model, with a maximum adsorption capacity of 20.0 ± 0.5 mg g⁻¹ . The MOF@NC aerogel retained approximately 87.2 ± 2.4 % of its initial adsorption efficiency after five adsorption‑desorption cycles, demonstrating good interfacial stability and reusability. Spectroscopic analyses (FTIR, XPS, SEM‑EDS) identify multiple interfacial interactions, including amide‑bond formation, Lewis acid-base coordination with MOF Zr-oxo clusters, π–π stacking between aromatic domains, hydrogen bonding, and dispersive interactions. Complementary density functional theory (DFT) and reduced density gradient (RDG) reveal energetically favorable adsorption configurations, and pronounced electronic redistribution at the MOF-nanocellulose heterointerface. By integrating macroscopic adsorption behavior with molecular-level interfacial analysis, this work establishes a mechanism-oriented framework for interpreting adsorption at MOF-biopolymer hybrid interfaces, thereby advancing fundamental understanding of how hybrid colloidal interfaces govern the sequestration of aniline-derived contaminants beyond prior performance-focused studies.

了解轮胎衍生污染物在混合多孔材料上的界面吸附途径对于推进胶体和界面科学至关重要。在这里，我们设计了一种分层结构的金属有机框架（MOF）功能化纳米纤维素（MOF@NC）气凝胶，利用二羧基纤维素纳米晶体（DCN）介导的界面桥接，形成一个化学活性和空间互联的吸附网络。通过动力学、等温线和热力学分析对6PPD -醌的吸附进行了评价，揭示了符合伪二级模型的快速化学吸附和符合Langmuir模型的能量均匀位置的单层吸附，最大吸附量为20.0 ± 0.5 mg g⁻¹ 。经过5次吸附-解吸循环后，MOF@NC气凝胶保持了约87.2 ± 2.4 %的初始吸附效率，表现出良好的界面稳定性和可重复使用性。光谱分析（FTIR， XPS, SEM - EDS）鉴定出多种界面相互作用，包括酰胺键形成，与MOF Zr-oxo簇的Lewis酸碱配位，芳香域之间的π -π堆叠，氢键和色散相互作用。互补密度泛函理论（DFT）和还原密度梯度（RDG）揭示了mof -纳米纤维素异质界面上有利的能量吸附构型和明显的电子重分布。通过将宏观吸附行为与分子水平界面分析相结合，本研究建立了一个机制导向的框架，用于解释mof -生物聚合物杂化界面上的吸附，从而推进了对杂化胶体界面如何控制苯胺衍生污染物的吸附的基本理解，超越了先前以性能为重点的研究。

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引用次数: 0

A flexible strain sensor with high adhesion and mechanical enhancement based on PDMS/MWCNTs 基于PDMS/MWCNTs的高附着力和机械增强的柔性应变传感器

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-29 DOI: 10.1016/j.colsurfa.2026.139752

Wen Li , Xinxin Cai , Jinrong He , Hui Liu , Xuefeng Gui , Shudong Lin

With the rapid advancement of flexible electronic technology, flexible sensors have demonstrated significant application potential in the fields of electronic skin and wearable health monitoring. However, their widespread application is still limited by challenges including poor substrate adhesion, insufficient mechanical strength, and inadequate conductive layer stability. To address the weak interfacial adhesion and pronounced signal hysteresis of PDMS, this study modified it via the incorporation of PEG-PPG-PEG and ANF. This modification enhanced the elastomer’s adhesiveness and mechanical properties, while also reducing signal hysteresis. Hydroxylated MWCNTs were chosen as the conductive material, and a MWCNTs conductive layer was fabricated via vacuum filtration. Encapsulation with a double layer of A₁-P₆-PDMS result in a sandwich-structured conductive film A₁-P₆-PDMS/MWCNTs/A₁-P₆-PDMS, greatly improving the sensor's cyclic stability and durability. Experimental results indicate that the sensor exhibits high elongation at break (>140 %), strong adhesion (capable of stably holding a 20 g weight), high tensile strength (>2.5 MPa), fast response time (52 ms) and high sensitivity (GF = 27.63). It can accurately monitor physiological signals such as human joint movements, offering a promising method for the widespread application of electronic skin.

随着柔性电子技术的飞速发展，柔性传感器在电子皮肤、可穿戴式健康监测等领域显示出巨大的应用潜力。然而，它们的广泛应用仍然受到包括衬底附着力差、机械强度不足和导电层稳定性不足等挑战的限制。为了解决PDMS界面粘附力弱、信号迟滞明显的问题，本研究通过加入PEG-PPG-PEG和ANF对其进行修饰。这种改性提高了弹性体的粘附性和力学性能，同时也减少了信号滞后。选择羟基化MWCNTs作为导电材料，通过真空过滤制备MWCNTs导电层。采用双层A1-P6-PDMS封装，形成夹层结构的导电膜A1-P6-PDMS/MWCNTs/A1-P6-PDMS，大大提高了传感器的循环稳定性和耐久性。实验结果表明，该传感器具有高断裂伸长率（>140 %）、强附着力（能够稳定承受20 g的重量）、高抗拉强度（>2.5 MPa）、快速响应时间（52 ms）和高灵敏度（GF = 27.63）等特点。它可以准确监测人体关节运动等生理信号，为电子皮肤的广泛应用提供了一种很有前景的方法。

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引用次数: 0

Precursor-driven morphological control of manganese molybdates nanoflakes for high-performance battery-supercapacitor hybrid devices 用于高性能电池-超级电容器混合器件的钼酸锰纳米片前驱体驱动的形态控制

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-29 DOI: 10.1016/j.colsurfa.2026.139750

Suprimkumar D. Dhas , Suraj B. Madake , Pragati N. Thonge , Saifan M. Shaikh , Manesh A. Yewale , Rupesh S. Pedanekar , Santosh V. Mohite , Abdullah A. Al-Kahtani , Minjae Kim , Falah Awwad

This work details a facile hydrothermal synthesis of MnMoO₄ nanostructures (NSs) with controlled morphology. By employing different manganese salt precursors, such as chloride, nitrate, and acetate, with a consistent molybdenum precursor source, distinct nanoflakes, nanospheres, and quasi-nanospheres architectures were successfully obtained. The nanoflake-based electrode exhibited a larger specific surface area of 42.04 m²/g. Electrochemical characterization revealed that an electrode fabricated from the MnMoO₄ nanoflakes (MMO-1) delivered a remarkable specific capacitance/capacity of 1008.9 F/g (504.4 C/g) at 10 mA/g in a 2 M KOH. The optimised MMO-1 electrode also demonstrated excellent cycling stability, retaining 89.8 % of capacitance with a Coulombic efficiency of 98.3 % over 10,000 cycles. Furthermore, the ABSH coin cell device achieved a superior capacitance/capacity of 133.7 F/g (214 C/g), a specific energy of 47.5 Wh/kg at a specific power density of 1923.1 W/kg, and maintained 80.1 % capacitance retention with 96.7 % Coulombic efficiency after 5000 cycles.

这项工作详细介绍了一种易于水热合成具有控制形貌的MnMoO4纳米结构（NSs）。通过采用不同的锰盐前驱体，如氯化物、硝酸盐和醋酸盐，以及一致的钼前驱体来源，成功地获得了不同的纳米片、纳米球和准纳米球结构。纳米片电极的比表面积为42.04 m2/g。电化学表征表明，由MnMoO4纳米片（MMO-1）制成的电极在2 M KOH中，在10 mA/g条件下具有1008.9 F/g（504.4 C/g）的显著比电容/容量。优化后的MMO-1电极还表现出优异的循环稳定性，在10,000次循环中保持89.8% %的电容和98.3% %的库仑效率。此外，ABSH投币电池器件的电容/容量为133.7 F/g(214 C/g)，比能量为47.5 Wh/kg，比功率密度为1923.1 W/kg，在5000次循环后保持80.1 %的电容保持率和96.7 %的库仑效率。

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引用次数: 0

Particle removal behavior of composite surfactants during the post-CMP cleaning process for Co-patterned wafers 复合表面活性剂在共图像化晶圆后cmp清洗过程中的颗粒去除行为

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-28 DOI: 10.1016/j.colsurfa.2026.139748

Lifei Zhang , Mei Yan , Ke Wang , Xinchun Lu

Cobalt (Co) with its low resistivity, superior adhesion property, and void-free seamless fill ability pledges to transform the landscape of integrated circuits in many areas, especially in interconnects and logic contacts. The cleaning of Co surfaces after chemical mechanical polishing (CMP) is an indispensable step, as the process can introduce defects such as SiO₂ nanoparticles, organic residues, and severe corrosion. Based on preliminary investigations, this study proposes a composite system utilizing a cationic surfactant combined with a nonionic surfactant. Specifically designed for post-CMP cleaning of Co patterned wafers, the system addresses the issues of low particle removal efficiency (PRE) associated with single surfactant approaches. The cleaning performance of this system was validated for the first time on actual Co patterned wafers (94.58 % PRE), which is significantly superior to that of individual surfactant systems. Contact angle measurements demonstrate that the introduction of composite surfactants enhances the wettability of the cleaning solution, mitigating the hydrophobicity of the Co surface induced by corrosion inhibitors. Furthermore, zeta potential measurements and analysis of electrostatic interactions indicate that under the influence of the complex surfactant, stronger repulsion occurs between silica particles and the Co surface, facilitating effective particle cleaning. Quantum chemical calculations further elucidate the efficacy of surfactants, with hydrophilic groups serving as primary adsorption sites. This study addresses the current gap in cleaning research, which has been largely confined to blanket wafers, and provides valuable insights for practical Co post‑CMP cleaning solutions.

钴（Co）具有低电阻率、优异的粘附性能和无空隙无缝填充能力，有望在许多领域改变集成电路的格局，特别是在互连和逻辑触点方面。化学机械抛光（CMP）后Co表面的清洁是必不可少的步骤，因为该过程可能会引入SiO2纳米颗粒，有机残留物和严重腐蚀等缺陷。在初步研究的基础上，提出了一种阳离子表面活性剂与非离子表面活性剂结合的复合体系。该系统专为Co图案晶圆的cmp后清洗而设计，解决了单一表面活性剂方法的低颗粒去除效率（PRE）问题。首次在实际Co晶圆上验证了该体系的清洗性能（PRE值为94.58 %），明显优于单个表面活性剂体系。接触角测量表明，复合表面活性剂的引入提高了清洗液的润湿性，减轻了Co表面由缓蚀剂引起的疏水性。此外，静电相互作用的zeta电位测量和分析表明，在复合表面活性剂的影响下，二氧化硅颗粒与Co表面之间发生更强的排斥，有利于有效的颗粒清洁。量子化学计算进一步阐明了表面活性剂的功效，亲水性基团是主要的吸附位点。本研究解决了目前清洁研究的空白，这主要局限于毯状晶圆，并为实际的Co - CMP后清洁解决方案提供了有价值的见解。

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引用次数: 0

Preparation of a magnetic nanopartical based on amino modification and its application in removing glyceraldehyde 氨基修饰磁性纳米颗粒的制备及其在去除甘油醛中的应用

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-28 DOI: 10.1016/j.colsurfa.2026.139737

Hui Zhou , Bingxin Zhu , Shuang Liu , Qiang Fu , Jibo Zhang , Zhigang Liu , Shihua Yu

To remove a small amount of glyceraldehyde from glycerol efficiently and conveniently, a tailored magnetic nanopartical of Fe₃O₄@SiO₂-NH₂ is prepared by sol-gel and dehydration condensation methods. The structural, morphological, and magnetic properties of adsorbent have been characterized by XRD, FTIR, SEM, VSM and BET. The influence of contact time, adsorbent dosage, initial concentration and reaction temperature on the removing of glyceraldehyde have been investigated. Batch adsorption experiments indicate that the removal rate of glyceraldehyde is ∼80 %, with the initial concentration of 10 mg/L, and adsorbent dosage of 3.5 g/L at 80 ℃. Meanwhile, the adsorption process is in accordance with the pseudo-second-order adsorption kinetics and the Langmuir adsorption isotherm model. Thermodynamic data indicate that this adsorption is endothermic and non-spontaneous. Importantly, the composites can be used for glyceraldehyde removal from three glycerol products from the market, with the removal rates of 83.76 % (Reagent), 85.01 % (Quan Rui) and 82.48 % (Sinopharm), respectively. Finally, the adsorption mechanisms are explored by pH experimental evidence and XRD, FTIR analysis, which show that mainly involve hydrogen bonding, aldehyde-amine condensation reaction, and non-specific surface physical adsorption. All the results can provide new idea for improving the high value of chemical products and reducing the small amount of harmful impurities in glycerol.

为了高效方便地去除甘油中的少量甘油醛，采用溶胶-凝胶法和脱水缩合法制备了量身定制的磁性纳米颗粒Fe3O4@SiO2-NH2。采用XRD、FTIR、SEM、VSM和BET对吸附剂的结构、形貌和磁性能进行了表征。考察了接触时间、吸附剂用量、初始浓度和反应温度对脱除甘油醛的影响。批量吸附实验表明，在80℃条件下，初始浓度为10 mg/L，吸附剂用量为3.5 g/L，对甘油醛的去除率为~ 80 %。吸附过程符合拟二级吸附动力学和Langmuir吸附等温线模型。热力学数据表明，这种吸附是吸热的，非自发的。重要的是，该复合材料可用于市场上三种甘油产品的甘油醛脱除，去除率分别为83.76 %（试剂），85.01 %（泉瑞）和82.48 %（国药控股）。最后，通过pH实验证据和XRD、FTIR分析探讨了吸附机理，结果表明，吸附机理主要包括氢键反应、醛胺缩合反应和非特异性表面物理吸附。研究结果可为提高化工产品的高附加值和降低甘油中有害杂质的含量提供新的思路。

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引用次数: 0

Effects of mono/di-rhamnolipids on rice growth and rhizosphere microbes under salt stress 盐胁迫下单鼠李糖脂/双鼠李糖脂对水稻生长和根际微生物的影响

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-28 DOI: 10.1016/j.colsurfa.2026.139751

Zhen Li , Liang Sun , Shengze Su , Rui Wang , Peng Lei , Yian Gu , Yongting Song , Jian Gao , Hong Xu

Salt stress severely threatens crop production, and exploring safe and efficient salt tolerance regulation technologies is of great significance. As a typical biosurfactant, rhamnolipids (RLs) exist in two main forms (mono-RLs and di-RLs) with distinct structures, but the differences in their regulatory effects on plant salt tolerance remain unclear. In this study, a mono-RLs-producing knockout strain Pseudomonas aeruginosa ST-3ΔrhlC, and a di-RLs-inducible strain ST-3 (pJN105-rhlC) were constructed. The two types of RLs were prepared and purified, and their effects on rice seedlings under salt stress were investigated. Results indicated that 20 mg/L RLs significantly alleviated salt stress, whereas 100 mg/L RLs inhibited rice growth. Among all treatments, The optimal solution was 20 mg/L mono-RLs (Mono-20)，which increased root dry weight by 18.9 %, enhanced chlorophyll content and K⁺/Na⁺ ratio, improved antioxidant enzyme activities, and reduced membrane lipid peroxidation damage. More importantly, Mono-20 can directionally optimize the rhizosphere microbial community structure and significantly enrich beneficial bacteria. These findings confirm the effectiveness of RLs in enhancing plant salt stress tolerance and provide theoretical support for choosing appropriate RLs types in crop cultivation in saline soils.

盐胁迫严重威胁作物生产，探索安全高效的耐盐调控技术具有重要意义。鼠李糖脂（RLs）作为一种典型的生物表面活性剂，主要以单RLs和双RLs两种结构形式存在，但它们对植物耐盐性的调节作用差异尚不清楚。本研究构建了单rls产生敲除菌株铜绿假单胞菌ST-3ΔrhlC和双rls诱导菌株ST-3 （pJN105-rhlC）。制备并纯化了两种类型的RLs，并对其在盐胁迫下对水稻幼苗的影响进行了研究。结果表明，20 mg/L RLs显著缓解了盐胁迫，而100 mg/L RLs则抑制了水稻生长。在所有处理中，最优溶液为20 mg/L mono-RLs (Mono-20)，可使根干重提高18.9 %，提高叶绿素含量和K + /Na +比，提高抗氧化酶活性，减轻膜脂过氧化损伤。更重要的是，Mono-20可以定向优化根际微生物群落结构，显著丰富有益菌群。这些研究结果证实了RLs在提高植物耐盐性方面的有效性，为盐碱地作物种植选择合适的RLs类型提供了理论支持。

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引用次数: 0

In visible-light efficient activation of persulfate by C3N5@NiFe2O4 for tetracycline degradation 在可见光下通过C3N5@NiFe2O4高效激活过硫酸盐降解四环素

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-28 DOI: 10.1016/j.colsurfa.2026.139738

Hongyu Liu , Chenlin Zhang , Cong Wang , Yongpeng Cui , Wenlong Li , Jindi He , Kaian Yang , Yuting Wang , Xinmiao Zhang , Yajun Wang

Antibiotics are widely used in the field of disease prevention and treatment, but the overuse of antibiotics has caused great pollution to aquatic ecosystems. Photocatalytic synergistic peroxynitrite advanced oxidation technology with high efficiency degradation can be applied to the treatment of antibiotic wastewater. In addition, transition metal activation of peroxynitrite (PMS) can generate strong oxidizing sulfate radicals which is the most effective method. However, transition metal activation of PMS transforms to high valence state and is difficult to reduce to low valence state. Therefore, how to improve the regeneration rate of the low-valent state has become a challenge in advanced oxidation technology. This work studies the degradation of antibiotics using PMS activated on composite catalysts consisting of C₃N₅ and transition metal oxides. Under visible light irradiation (λ > 420 nm), the system containing 0.8 % C₃N₅-NiFe₂O₄ achieves 89.1 % degradation of 50 ppm tetracycline hydrochloride (TCH) with good stability. EPR characterization reveals that the catalyst promoted the generation of four reactive oxygen species (ROS), ¹O₂, ·SO₄^-, ·O₂^- and ·OH, which synergistically contributed to the degradation of the pollutants. Finally, we analyze the intermediates that may be produced during the explanation process and conducted toxicity assessments.

抗生素广泛应用于疾病防治领域，但抗生素的过度使用对水生生态系统造成了极大的污染。高效降解的光催化协同过氧亚硝酸盐深度氧化技术可用于抗生素废水的处理。此外，过渡金属活化过氧亚硝酸盐（PMS）产生强氧化性硫酸盐自由基是最有效的方法。然而，过渡金属活化的PMS转变为高价态，很难还原为低价态。因此，如何提高低价态的再生速度成为高级氧化技术的挑战。本文研究了C3N5和过渡金属氧化物复合催化剂活化PMS对抗生素的降解。在可见光（λ > 420 nm）照射下，含有0.8 % C3N5-NiFe2O4的体系对50 ppm盐酸四环素（TCH）的降解率达到89.1% %，稳定性良好。EPR表征表明，该催化剂促进了四种活性氧（ROS）的生成，即1O2、·SO4-、·O2-和·OH，这四种活性氧协同促进了污染物的降解。最后，我们分析了在解释过程中可能产生的中间体，并进行了毒性评估。

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引用次数: 0

Sequential silica- and phosphate-assisted zirconia coating for phase stabilization of micrometer-sized platy γ-alumina 连续二氧化硅和磷酸盐辅助氧化锆涂层用于微米级γ-氧化铝板的相稳定

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-27 DOI: 10.1016/j.colsurfa.2026.139721

Shingo Machida , Daisaku Yokoe , Toshimichi Shibue , Hajime Okawa , Takayuki Nagano

Sequential modification was applied to stabilize of γ-alumina toward phase transformation into α-alumina even at the relatively high temperature of 1300°C. A zirconia layer was first deposited, followed by phosphorus introduction through trimethylphosphate treatment, and finally a silica coating via a sol–gel reaction. Phase and structural evolution were characterized by X-ray diffraction, solid-state nuclear magnetic resonance, and electron microscopy. While zirconia-coated specimens transformed into α-alumina at 1300°C, the combined incorporation of phosphorus and silica—through sequential coatings of zirconia containing phosphorus and silica—effectively suppressed zirconia crystallization on γ-alumina. This stabilization also delayed the γ-to-α phase transformation even after calcination at 1300°C. In this process, phosphorus contributes to the stabilization through the formation of zirconium and aluminum phosphates, resulting from its diffusion from the zirconia layers into the underlying γ-alumina, whereas silica promotes the formation of Si–O–Zr linkages while preserving its coating layer. These effects cooperatively suppress zirconia crystallization. Therefore, these results demonstrated that sequential multi-element modification provides a promising route to enhance the phase stability of various as-prepared γ-aluminas.

在1300℃的高温下，通过序次改性使γ-氧化铝向α-氧化铝的相变趋于稳定。首先沉积氧化锆层，然后通过三甲基磷酸盐处理引入磷，最后通过溶胶-凝胶反应形成二氧化硅涂层。通过x射线衍射、固体核磁共振和电子显微镜对物相和结构演化进行了表征。当氧化锆涂层的样品在1300℃时转变为α-氧化铝时，磷和硅的结合-通过连续的含磷氧化锆和含硅氧化锆涂层-有效地抑制了氧化锆在γ-氧化铝上的结晶。即使在1300℃煅烧后，这种稳定性也延迟了γ-to-α相变。在这一过程中，磷从氧化锆层扩散到下面的γ-氧化铝层，从而形成磷酸锆和磷酸铝，从而有助于稳定，而二氧化硅在保留其涂层的同时促进了Si-O-Zr键的形成。这些效应共同抑制氧化锆结晶。因此，这些结果表明，顺序多元素修饰为提高各种制备的γ-氧化铝的相稳定性提供了一条有希望的途径。

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引用次数: 0

Cu-CDs drive the formation of protein tribo-film on the porous UHMWPE to achieve auto-antifriction property in BSA solution Cu-CDs驱动多孔超高分子量聚乙烯在BSA溶液中形成蛋白质摩擦膜，实现自摩擦性能

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-01-27 DOI: 10.1016/j.colsurfa.2026.139724

N.N. Zhen , K.H. Chen , M.T. Li , F. Wen , Q.Y. Deng

Ultra-high-molecular weight polyethylene (UHMWPE) is the most widely used friction material for artificial joints. Polyethylene debris generated during its use is the main reason behind the aseptic loosening of artificial joints. Improving the wear resistance of UHMWPE and reducing debris generation have been the focus of research in this field. Inspired by the structure of natural cartilage and based on our previous research, we developed a new type of porous UHMWPE-based artificial joint material doped with copper-containing carbon dots (Cu-CDs). In a protein-containing lubricating medium, this material exhibited auto-antifriction properties by absorbing/releasing the lubricating medium and forming a protein film on the tribo-interface. These effects can significantly enhance the wear resistance of UHMWPE. The results showed that spherical Cu-CDs with an average size of 5–6 nm were successfully prepared. The tensile strength of the porous UHMWPE doped with Cu-CDs (Cu-CDs@UHMWPE) (approximately 9.93 MPa) was close to that of natural joint cartilage. Cu-CDs@UHMWPE promoted the adsorption of proteins by the friction interface and formed a protein film that reduced wear. Under the same friction conditions, the wear index of Cu-CDs@UHMWPE was approximately three times lower than that of pure UHMWPE. This study showed that UHMWPE can be imbued with the ability to form protein films to enhance wear resistance, and these findings provide experimental and theoretical evidence for the development of novel biomimetic artificial joint materials.

超高分子量聚乙烯（UHMWPE）是应用最广泛的人工关节摩擦材料。其使用过程中产生的聚乙烯碎片是人工关节无菌性松动的主要原因。提高超高分子量聚乙烯的耐磨性，减少碎片的产生一直是该领域的研究热点。受天然软骨结构的启发，在前人研究的基础上，我们开发了一种新型的掺杂含铜碳点（Cu-CDs）的多孔uhmwpe基人工关节材料。在含蛋白质的润滑介质中，该材料通过吸附/释放润滑介质并在摩擦界面上形成蛋白质膜而表现出自抗摩擦性能。这些作用可以显著提高超高分子量聚乙烯的耐磨性。结果表明，成功制备了平均尺寸为5 ~ 6 nm的球形Cu-CDs。Cu-CDs掺杂的多孔UHMWPE （Cu-CDs@UHMWPE）的抗拉强度约为9.93 MPa，接近天然关节软骨的抗拉强度。Cu-CDs@UHMWPE促进了摩擦界面对蛋白质的吸附，形成了减少磨损的蛋白质膜。在相同的摩擦条件下，Cu-CDs@UHMWPE的磨损指数比纯UHMWPE的磨损指数低约3倍。研究结果表明，UHMWPE具有形成蛋白膜的能力，从而增强了其耐磨性，为新型仿生人工关节材料的开发提供了实验和理论依据。

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