Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献_第4页

Vapor deposition assisted click chemical reaction for controllable design of superhydrophobic core-sheath micro-nanofibers 气相沉积辅助点击化学反应在超疏水芯鞘微纳米纤维可控设计中的应用

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-08 DOI: 10.1016/j.colsurfa.2026.139901

Ruyi Liang, Jingying Xu, Zhao Zhang, Xin Liu, Yinger Ye, Mengyao Zhao, Zhiyu Li, Wanjing Li, Bin Yang, Jing Zhou, Xianglong Li

Effectively separating oil-water emulsions remains a critical worldwide challenge requiring innovative solutions. In previous studies, we used click chemistry to have a high separation efficiency of oil-water emulsions. However, the degree of reaction between thiols and membranes is difficult to control. Either an excessive or insufficient amount of thiol will have a significant impact on the morphology and properties of the final fibers. Based on this, we developed a novel controllable strategy for the stable superhydrophobic modification of core-sheath micro-nanofibers. We converted the original single-step approach into a sequential two-step process, which involved pre-sulfhydration followed by click chemistry reaction. In detail, we introduced the sulfhydryl group on the surface of fibrous membranes by vapor deposition, and then grafted tetramethyltetravinylcyclotetrasiloxane (V4) on the surface of fibrous membranes by thiol-ene click chemistry reaction. Results showed that the surface of PAN/PVDF@HBPUS-CLICK was rough and had a spherical structure. After we rubbed 50 times, the contact angle was above 153.6° ± 1.1°, the scrolling angle was 8.5° ± 0.7°, showing good wear resistance. In addition, after 50 cycles, the separation efficiency of PAN/PVDF@HBPUS-CLICK fibrous membranes was still above 95 %. The results showed the membranes maintained high separation efficiency across low- to high-viscosity water-in-oil emulsions, highlighting the strong application prospects of PAN/PVDF@HBPUS-CLICK for oil-water separation.

有效分离油水乳液仍然是全球面临的一个重大挑战，需要创新的解决方案。在以往的研究中，我们采用点击化学的方法对油水乳液进行了较高的分离效率。然而，硫醇与膜之间的反应程度很难控制。硫醇的过量或不足都会对最终纤维的形态和性能产生重大影响。在此基础上，我们开发了一种稳定的超疏水改性微纳米纤维的可控策略。我们将原来的单步方法转变为连续的两步过程，其中包括预硫酸化和点击化学反应。通过气相沉积法在纤维膜表面引入巯基，然后通过巯基化学反应将四甲基四travinylcyclotetrasiloxane （V4）接枝到纤维膜表面。结果表明，PAN/PVDF@HBPUS-CLICK表面粗糙，具有球形结构。经过50次摩擦，接触角在153.6°±1.1°以上，滚动角在8.5°±0.7°，耐磨性良好。此外，经过50次循环后，PAN/PVDF@HBPUS-CLICK纤维膜的分离效率仍在95 %以上。结果表明，该膜在低粘度至高粘度油包水乳液中保持了较高的分离效率，表明PAN/PVDF@HBPUS-CLICK在油水分离方面具有较强的应用前景。

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引用次数: 0

Degree of polymerization controls bound/free water balance and water-holding in multifunctional amphiphilic polymer esters 聚合度控制着多功能两亲性聚合物酯的结合/自由水平衡和持水量

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-06 DOI: 10.1016/j.colsurfa.2026.139858

Yuko Maema Anda , Naoko Hanada Yamazaki , Kai Yoshioka , Fan Meng , Toshinori Saida , Keiichi Oyama , Noriyoshi Arai

Moisture retention is a key determinant of sensory performance and stability in emulsified formulations, yet the molecular basis of water-holding in amphiphilic polymer esters used in cosmetics remains insufficiently elucidated. In this study, two compounds with different degrees of polymerization were synthesized from Polyglyceryl-2 Dipolyhydroxystearate (L-PD and S-PD), a water-in-oil emulsifier widely used in cosmetics. Hydrate formation revealed that L-PD exhibited a water-holding capability of 434 %, compared to 152 % for S-PD, with distinct hydrate structures. Based on the hypothesis that this difference in water-holding capability was due to differences in the degree of polymerization, the water-holding mechanism was investigated using both in vitro and in silico approaches. Experimental results showed that water in L-PD hydrates existed as both bound and free water, whereas S-PD hydrates contained predominantly free water. Simulations showed that differences in the degree of polymerization resulted in variations in the types of polymer configurations that could be adopted during water-holding. A higher degree of polymerization was found to favor polymer configurations with stronger affinity for water, promoting bound-water formation and enhancing the water-holding capability. This combined experimental and computational approach provides novel insights into the water-holding mechanism and is expected to aid the design of high-performance moisturizing materials for cosmetic applications.

保持水分是乳化配方中感官性能和稳定性的关键决定因素，但化妆品中使用的两亲性聚合物酯保持水分的分子基础仍未充分阐明。本研究以广泛应用于化妆品的油包水乳化剂聚甘油-2二聚羟基硬脂酸酯（L-PD和S-PD）为原料，合成了两种不同聚合度的化合物。水合物形成表明，L-PD的持水能力为434 %，而S-PD的持水能力为152 %，具有不同的水合物结构。基于这种持水能力的差异是由于聚合程度的差异的假设，采用体外和硅方法研究了持水机制。实验结果表明，L-PD水合物中的水以结合水和自由水的形式存在，而S-PD水合物中以自由水为主。模拟结果表明，聚合程度的不同导致了在持水过程中可以采用的聚合物构型类型的变化。聚合度越高，聚合物构型对水的亲合力越强，促进了结合水的形成，提高了持水能力。这种实验和计算相结合的方法为持水机制提供了新的见解，并有望帮助设计用于化妆品应用的高性能保湿材料。

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引用次数: 0

Surface modification methods for enhancing corrosion resistance and antibacterial properties of titanium alloy – Potential for underwater antifouling applications 提高钛合金耐腐蚀和抗菌性能的表面改性方法。水下防污应用的潜力

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-07 DOI: 10.1016/j.colsurfa.2026.139888

Pengan Fu , Haonan Yu , Haojie Bai , Yifei Wang

To meet the urgent demand for material surface performance in harsh marine environments, this study proposes an innovative, environmentally friendly, and low-cost integrated surface modification strategy. This strategy relies solely on nanosecond laser processing, without requiring any additional coatings. By sequentially performing micro-texturing and defocused irradiation on the titanium alloy surface, a composite surface consisting of micro-textures and a nano-oxide film was successfully fabricated. Comprehensive characterization revealed significant changes in the physicochemical properties of the modified surface. Performance test results demonstrated that the composite surface, formed by micro-pit textures and the nano-oxide film, exhibits outstanding comprehensive performance: its charge transfer resistance increased by approximately 2.5 times compared to the polished substrate, significantly enhancing corrosion resistance; the antibacterial rate against Staphylococcus aureus exceeded 90 %; and after a prolonged 180-day real seawater immersion test, the surface showed excellent inhibition effects on the adhesion of various fouling organisms, such as bryozoans and nematodes. The coating-free, scalable laser surface engineering method developed in this study offers a multifunctional solution for key marine components (such as fasteners and sensor housings), combining long-term corrosion resistance with high-efficiency antifouling.

为满足海洋恶劣环境下对材料表面性能的迫切需求，本研究提出了一种创新、环保、低成本的综合表面改性策略。这种策略完全依赖于纳秒激光加工，不需要任何额外的涂层。通过对钛合金表面进行微织构和散焦辐照，成功制备了由微织构和纳米氧化膜组成的复合表面。综合表征表明，改性表面的物理化学性质发生了显著变化。性能测试结果表明，微坑织构与纳米氧化膜形成的复合表面综合性能优异：其电荷转移电阻比抛光基底提高了约2.5倍，显著提高了耐蚀性；对金黄色葡萄球菌的抑菌率超过90 %；经过长达180天的真实海水浸泡试验，该表面对苔藓虫、线虫等多种污染生物的粘附具有良好的抑制作用。本研究开发的无涂层、可扩展激光表面工程方法为关键船舶部件（如紧固件和传感器外壳）提供了多功能解决方案，将长期耐腐蚀性与高效防污相结合。

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引用次数: 0

Enhanced photodegradation performance and mechanism of MIL-101(Fe)@AgI@TPA/TPB photocatalyst with double Z-scheme heterojunction for oxytetracycline hydrochloride 双z型异质结MIL-101(Fe)@AgI@TPA/TPB光催化剂对盐酸土霉素的光降解性能及机理研究

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-07 DOI: 10.1016/j.colsurfa.2026.139848

Bolong Liang , Hongbin He , Xi Zhu , Shu-Xuan Liang

The residue of oxytetracycline hydrochloride (OTC) has emerged as a significant concern impacting both human health and the ecological environment. Photocatalysis has a good application prospect in the treatment of antibiotic pollution due to its advantages of lost cost, high efficiency and environmental friendliness, and the development of photocatalyst has become crucial for achieving effective photocatalytic degradation. The preparation of Z-scheme heterojunction is regarded as an effective strategy to enhance photocatalytic activity. Herein, double Z-scheme MIL-101(Fe)@AgI@TPA/TPB heterojunction materials were innovatively designed and successfully prepared. MIL-101(Fe)@AgI@TPA/TPB could achieve 95.09 % OTC removal efficiency under visible light irradiation in 70 min. The investigation of photoelectric properties and mechanisms revealed that MIL-101(Fe)@AgI@TPA/TPB had a broader range and enhanced ability for light absorption, along with a narrower band gap. It was determined that ·O₂^- and ·OH were the primary active species involved in the photocatalysis process. The mechanism of double Z-scheme heterojunction capable of facilitating efficient photocatalytic degradation was proposed, and the intermediate products and decomposition pathways of OTC in the photocatalytic degradation process were analyzed. This study provides innovative insights into practical application through the prepared double Z-scheme heterojunction photocatalyst aimed at remediating OTC contamination in water environments.

盐酸土霉素（OTC）的残留已成为影响人类健康和生态环境的重要问题。光催化具有成本低、效率高、环境友好等优点，在抗生素污染治理中具有良好的应用前景，而光催化剂的开发成为实现有效光催化降解的关键。制备z型异质结被认为是提高光催化活性的有效策略。本文创新地设计并成功制备了双Z-scheme MIL-101(Fe)@AgI@TPA/TPB异质结材料。MIL-101(Fe)@AgI@TPA/TPB在70 min可见光照射下对OTC的去除率达到95.09 %。对MIL-101(Fe)@AgI@TPA/TPB的光电性质和机理的研究表明，MIL-101(Fe)@AgI@TPA/TPB具有更宽的光吸收范围和更强的光吸收能力，同时具有更窄的带隙。结果表明，·O2-和·OH是参与光催化过程的主要活性物质。提出了双z型异质结促进高效光催化降解的机理，分析了OTC在光催化降解过程中的中间产物和分解途径。本研究通过制备的双z型异质结光催化剂修复水环境中的OTC污染，为实际应用提供了创新的见解。

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引用次数: 0

Optimization of Ni-Co-MoS2 composite electrodes fabricated by magnetic field assisted jet electrodeposition based on response surface methodology 基于响应面法的磁场辅助喷射电沉积Ni-Co-MoS2复合电极优化

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-10 DOI: 10.1016/j.colsurfa.2026.139926

Wei Jiang , Fuwei Wang , Junjie Li , Lijuan Pang , Yang Gao

Optimizing electrodeposition parameters to simultaneously control microstructure and charge-transfer properties remains challenging for alkaline water electrolysis. Here, we coupled a magnetic field with jet electrodeposition to fabricate Ni–Co–MoS₂ composite electrodes and applied a Box–Behnken response-surface methodology to map the parameter space and locate optima. The combined strategy yielded deposits with markedly textured surfaces and refined crystallinity, as confirmed by 3D profilometry, XRD, and XPS, which together increased the electrochemically active surface area and facilitated charge transfer. Guided by the model, an operating window centered at a particle concentration of 4.7 g L⁻¹ , current density of 74.1 A dm⁻², and deposition time of 20.8 min delivered superior activity (η₁₀ = 225 mV; Tafel slope = 40 mV dec⁻¹) and robust durability for 50 h at 10 mA cm⁻², with model predictions agreeing with experiment within 5.2 %. These results demonstrate a generalizable route—combining magnetic-field assistance with statistical optimization—to durable electrodes for sustainable hydrogen production.

优化电沉积参数以同时控制其微观结构和电荷转移特性仍然是碱水电解的一个挑战。在此，我们将磁场与射流电沉积耦合制备了Ni-Co-MoS 2复合电极，并应用Box-Behnken响应面方法绘制了参数空间并找到了最优点。通过3D轮廓仪、XRD和XPS证实，该组合策略产生的沉积物表面具有明显的纹理和精细的结晶度，同时增加了电化学活性表面积，促进了电荷转移。模型的指导下,一个操作窗口集中在一个粒子浓度4.7 g L⁻¹ ,电流密度为74.1  dm⁻², 和沉积时间20.8分钟交付卓越的活动(η₁₀= 225 mV;塔费尔斜率= 40 mV 12月⁻¹)和健壮的耐久性10点50 h 马 厘米⁻²,同意与模型预测实验在5.2 %。这些结果展示了一条可推广的路线——将磁场辅助与统计优化相结合——用于可持续制氢的耐用电极。

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引用次数: 0

Bio-inspired robust superhydrophilic/air-superoleophobic WPU/F-BN@SiO2 composite coating with excellent anti-waxing performance 仿生坚固的超亲水性/超疏气超疏油WPU/F-BN@SiO2复合涂料，具有优异的抗蜡性能

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-03 DOI: 10.1016/j.colsurfa.2026.139795

Zhanjian Liu , Xuelin Liu , Jingren He , Xiaocui Wei , Yuxin Fu , Xiguang Zhang , Meiling Li , Huaiyuan Wang

Bioinspired underwater superhydrophilic/superoleophobic coatings with anti-waxing adhesion properties have aroused extensive attention in crude oil production and pipeline transportation, but their practical applications are limited by oil contamination in harsh environments. Herein, a superhydrophilic/air-superoleophobic coating with coral-like porous structures was successfully fabricated via a one-step spraying method by integrating waterborne polyurethane (WPU) and the micro-nano composite particles (F-BN@SiO₂), which were synthesized through in-situ growth of SiO₂ on the boron nitride (BN) surface and subsequent chemical modification with FS-50. The prepared coating exhibited excellent superhydrophilicity/superoleophobicity in both air and water environments (OCA = 152.7 ± 1.3° and WCA = 0°). Compared with the unmodified WPU coating, the wax adhesion force of the WPU/F-BN@SiO₂ coating decreased from 9.954 N to 0.785 N, as the synergistic effect of hierarchical rough structures and low-surface-energy groups enables the coating to form an air film, which weakens van der Waals forces and enhances the repulsion of fluorinated groups, thereby repelling wax crystals into larger aggregates. Moreover, the underwater wax inhibition efficiency of the prepared coating can reach up to 99.86 % due to the rapid formation of hydrated layer to prevent wax crystal aggregation and adhesion. Furthermore, the prepared coating also demonstrated outstanding mechanical and chemical stability even after undergoing 300 cycles of sandpaper abrasion and 3 h immersion in corrosive solutions, which is enabled by the interfacial bonding formed through dopamine self-polymerization between the WPU and composite particles. Therefore, this durable superhydrophilic/air-superoleophobic coating with excellent adaptability to multiple working conditions possesses great application potential in the field of oilfield anti-waxing.

具有抗蜡附着力的仿生水下超亲水/超疏油涂料在原油生产和管道运输中引起了广泛关注，但其实际应用受到恶劣环境下原油污染的限制。本文采用一步喷涂的方法，将水性聚氨酯（WPU）与微纳复合颗粒（F-BN@SiO2）相结合，成功制备了一种具有珊瑚状多孔结构的超亲水/超疏气涂层。微纳复合颗粒是通过在氮化硼（BN）表面原位生长SiO2，然后用FS-50进行化学改性而成。制备的涂层在空气和水环境下均表现出优异的超亲水性/超疏油性（OCA = 152.7 ± 1.3°，WCA = 0°）。与未改性的WPU涂层相比，WPU/F-BN@SiO2涂层的蜡结合力从9.954 N下降到0.785 N，这是由于分层粗糙结构和低表面能基团的协同作用使涂层形成气膜，削弱了范德华力，增强了氟化基团的排斥力，从而将蜡晶体排斥成更大的聚集体。此外，由于水合层的快速形成，防止了蜡晶体的聚集和粘附，所制备的涂层的水下阻蜡效率可达99.86 %。此外，制备的涂层即使经过300次砂纸磨损和3 h腐蚀溶液浸泡，也表现出出色的机械和化学稳定性，这是由于WPU和复合颗粒之间通过多巴胺自聚合形成的界面键合。因此，这种耐久的超亲水/超疏气涂层对多种工况具有良好的适应性，在油田防蜡领域具有很大的应用潜力。

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引用次数: 0

Sol-gel preparation of transparent and superhydrophobic silica coatings for self-cleaning solar panels 自清洁太阳能电池板用透明超疏水二氧化硅涂层的溶胶-凝胶制备

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-09 DOI: 10.1016/j.colsurfa.2026.139910

Xinna Wu , Rajaram S. Sutar , Enyu He , Sanjay S. Latthe , Sudhagar Pitchaimuthu , Bairu Shi , Ruimin Xing , Shanhu Liu

The increasing significance of photovoltaic power generation within the renewable energy sector is encountered by effective challenges such as dust accumulation and hence light reflection, bird droppings, and water films on solar panels are negatively impacting on their efficiency. In this study, a dual-layer transparent superhydrophobic coating was prepared on a glass substrate by dip coating a sol-gel processed silica sol and further modifying with hydrophobic silica nanoparticles as a low surface energy material. Surface morphology analysis confirmed the formation of a nano-scale hierarchical structure, which is crucial for improving both superhydrophobicity and optical transparency. The optimized coatings demonstrate a water contact angle (WCA) of 154° and sliding angle (SA) of 1.5° with a transmittance of 96.2 %. The superhydrophobic coating revealed remarkable self-cleaning performance against soil and dye contaminants. Moreover, the assessments of mechanical and environmental stability show that the prepared coatings have preserved their properties against mechanical abrasion, adhesiveness, alkaline and acidic solutions, and outdoor weather conditions. Additionally, the coated glass integrated with solar panels, the coatings significantly improved performance of photovoltaic cells. These results indicate a promising approach for enhancing the performance of solar energy systems.

光伏发电在可再生能源领域的重要性日益增加，但太阳能电池板上的灰尘积累、光反射、鸟粪和水膜等有效挑战对其效率产生了负面影响。本研究通过在溶胶-凝胶处理的二氧化硅溶胶上浸涂，并用低表面能的疏水二氧化硅纳米颗粒进一步改性，在玻璃基板上制备了双层透明超疏水涂层。表面形貌分析证实了纳米级层次结构的形成，这对提高超疏水性和光学透明度至关重要。该涂层的水接触角（WCA）为154°，滑动角（SA）为1.5°，透过率为96.2% %。该超疏水涂层对土壤和染料污染物具有良好的自清洁性能。此外，机械稳定性和环境稳定性的评估表明，制备的涂层保持了其抗机械磨损、粘附性、碱性和酸性溶液以及室外天气条件的性能。此外，涂层玻璃与太阳能电池板集成，涂层显着提高了光伏电池的性能。这些结果表明了提高太阳能系统性能的一种有希望的方法。

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引用次数: 0

Electric field-intensified fabrication of nanoparticle-loaded microspheres for synergistic adsorption and photocatalysis of organic pollutant 电场强化制备纳米微粒负载微球对有机污染物的协同吸附和光催化

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-09 DOI: 10.1016/j.colsurfa.2026.139906

Zhong-Wen Pu, Shi-Ze Chen, Zi-Mo Ren, Yu-Tang Shen, Jing-Bo Wu, Wei-Cheng Yan

Adsorption and catalysis represent highly promising technologies for purifying organic pollutants. However, conventional nanocatalysts are difficult to recover and prone to causing secondary pollution. Highly adsorbent porous xerogels, currently attracting significant attention, face limitations in cyclic applications due to the requirement for external reagents during desorption treatment, and their performance degrades markedly after repeated use. In this study, we present a stable and facile preparation method of high-performance xerogel microspheres loaded with nanoparticles based on electric field intensification technique. A commonly used photocatalytic material TiO₂ and a biocompatible calcium alginate (CA) are used as the model materials for demonstration. It is found that high-performance microspheres with uniform particle size and controllable dimensions can be prepared by adjusting the electric field strength. The TiO₂-loaded CA (TiO₂@CA) microspheres prepared at 6 kV exhibit a 33.92 % enhancement in 1 h purification performance when comparing with pure CA xerogels. Moreover, even under weak light intensity conditions, the purification performance can be enhanced by approximately twofold within 0.5 h as compared to that of TiO₂ nanoparticles. The results confirmed that the synergistic effect between the high adsorption capacity of the CA substrate and the photocatalytic activity of TiO₂ nanoparticles enabled the microspheres to efficiently remove organic dye molecules from both the surfaces and the bulk phase solution. The TiO₂@CA microspheres can be regenerated without external reagents, demonstrating no performance degradation after five consecutive experiments, which proves their outstanding green advantages. This study provides a more economical, eco-friendly solution for efficient removal of organic pollutants.

吸附和催化是净化有机污染物的两种极具发展前景的技术。然而，传统的纳米催化剂回收困难，容易造成二次污染。高吸附性多孔干凝胶是目前备受关注的材料，但由于解吸过程中需要外部试剂，其循环应用受到限制，反复使用后性能明显下降。在这项研究中，我们提出了一种基于电场强化技术的高性能负载纳米粒子的静电凝胶微球制备方法。采用一种常用的光催化材料TiO2和一种生物相容性海藻酸钙（CA）作为模型材料进行演示。发现通过调节电场强度可以制备出粒径均匀、尺寸可控的高性能微球。在6 kV下制备的负载tio2的CA （TiO₂@CA）微球在1 h的净化性能比纯CA干凝胶提高了33.92 %。此外，即使在弱光强条件下，与TiO2纳米粒子相比，0.5 h内的净化性能也可以提高约两倍。结果证实了CA底物的高吸附能力与tio2纳米粒子的光催化活性之间的协同作用，使得微球能够有效地从表面和体相溶液中去除有机染料分子。tio2 @CA微球可以在不需要外界试剂的情况下再生，连续五次实验后性能没有下降，证明了其突出的绿色优势。本研究为高效去除有机污染物提供了一种更经济、更环保的解决方案。

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引用次数: 0

Heterogeneous interfacial engineering of 3D hierarchical Ni3Se4/FeSe@N-doped carbon nanoflower enabling enhanced oxygen evolution reaction 三维层次化Ni3Se4/FeSe@N-doped碳纳米花的非均相界面工程增强析氧反应

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-05 DOI: 10.1016/j.colsurfa.2026.139867

Xinxin Wang, Jinping Xu, Mingming Zhang, Qi Yuan, Liwei Jiao, Lihua Zhi

The pursuit of efficient, durable, and cost-effective oxygen evolution reaction (OER) electrocatalysts is of great significance for advancing sustainable energy technologies. Herein, a three-dimensional hierarchical N-doped carbon nanoflower encapsulated with nickel iron selenide (Ni₃Se₄/FeSe HNCNF) was fabricated via selenization of the iron salts decorated nickel coordination polymers. The obtained Ni₃Se₄/FeSe HNCNF presents abundant heterogenous interfaces, which effectively optimize the electronic configuration, substantially expediting charge-transfer kinetics. Additionally, the hierarchical nanoflower-like N-doped carbon framework maximizes the exposure of catalytic sites and restrains nanoparticle accumulation and erosion. Benefiting from these structural and compositional advantages, Ni₃Se₄/FeSe HNCNF delivers remarkable OER performance in alkaline medium (1.0 M KOH), achieving a low overpotential of 280 mV at 10 mA cm⁻², along with excellent durability exceeding 27 h at 10 mA cm⁻² and 100 mA cm⁻². This study highlights the potential of heterostructure engineering and three-dimensional hierarchical design in bimetallic selenides, offering new insights into the development of next-generation high-performance OER electrocatalysts.

追求高效、耐用、低成本的析氧反应（OER）电催化剂对推进可持续能源技术具有重要意义。本文通过镍配位聚合物修饰的铁盐硒化，制备了一种以硒化镍铁包封的三维分层氮掺杂碳纳米花（Ni3Se4/FeSe HNCNF）。得到的Ni3Se4/FeSe HNCNF具有丰富的异质界面，有效地优化了电子构型，大大加快了电荷转移动力学。此外，分层纳米花状n掺杂碳框架最大化了催化位点的暴露，并抑制了纳米颗粒的积累和侵蚀。受益于这些结构和组分的优势,Ni3Se4 / FeSe HNCNF提供非凡的OER性能在碱性介质(1.0 M KOH),实现过电压低280 mV 10马  厘米−2,以及出色的耐久性超过27 h 10马  厘米−2和100马  厘米−2。该研究突出了双金属硒化物异质结构工程和三维分层设计的潜力，为下一代高性能OER电催化剂的开发提供了新的见解。

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引用次数: 0

An electrostatic-mediated sequential assembly nanoplatinum composite coating for banana post-harvest preservation 香蕉采后保鲜用静电介导序列组装纳米铂复合涂层

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2026-05-20 Epub Date: 2026-02-02 DOI: 10.1016/j.colsurfa.2026.139827

Chenyu Ding , Mingyu Wu , Chao Yin , Qingyan Pan , Haoyang Xu , Jiale Ding , Shufang Guo , Ailing Guo

Coating preservation technology plays a vital role in maintaining the quality of fresh fruits and vegetables while extending their shelf life. This study proposes an electrostatic-mediated sequential assembly strategy to construct an integrated nano-platinum composite coating that synergistically enhances mechanical, barrier, and antimicrobial properties for post-harvest preservation of bananas. Performance tests demonstrated that nano-platinum significantly enhanced the coating's properties: tensile strength (TS) increased from 10.01 ± 0.44 MPa to 19.85 ± 0.10 MPa, elongation at break (EAB) rose from 25.65 ± 2.50 % to 83.99 ± 3.23 %, transmittance at 600 nm decreased from 88.20 % to 65.35 % indicating excellent UV-shielding capacity, and water vapor transmission (WVTR) rate reduced from 50 to 24 g·m⁻²·day⁻¹ , significantly enhancing water barrier property. Additionally, the composite coating demonstrated effective antifungal activity against multiple banana spoilage fungi, particularly Colletotrichum gloeosporioides and Fusarium oxysporum. When applied to bananas, the coating significantly improved storage quality and shelf life, extending the shelf life by 8 days compared to the prochloraz-treated group. Safety assessment of platinum residues via inductively coupled plasma mass spectrometry (ICP-MS) confirmed that platinum levels in all banana parts remained well below EU standards. Consequently, this multifunctional coating packaging holds promise as a novel solution for promoting sustainable post-harvest preservation of bananas.

涂层保鲜技术对保持新鲜果蔬的品质，延长其货架期起着至关重要的作用。本研究提出了一种静电介导的顺序组装策略来构建一种集成的纳米铂复合涂层，该涂层可以协同提高香蕉收获后保存的机械、屏障和抗菌性能。性能测试表明,nano-platinum显著提高涂料的性能:抗拉强度(TS)从10.01增加 ±0.44  MPa 19.85 ±0.10  MPa,断裂伸长率(EAB)从25.65 ±2.50  % 83.99 ±3.23  %,透光率在600 海里从88.20 %减少到65.35 %表示优秀UV-shielding能力,和水汽传输(WVTR)率减少从50到24 g·m⁻²·天⁻¹ ,大幅提高防水层的财产。此外，复合涂层对多种香蕉腐败真菌，特别是革孢炭疽菌和尖孢镰刀菌具有有效的抗真菌活性。当应用于香蕉时，该涂层显著提高了香蕉的储存质量和保质期，与丙氯唑处理组相比，保质期延长了8天。通过电感耦合等离子体质谱（ICP-MS）对铂残留的安全性评估证实，所有香蕉部分的铂含量仍远低于欧盟标准。因此，这种多功能涂层包装有望成为促进香蕉收获后可持续保存的新解决方案。

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