Progress in Organic Coatings最新文献

Enhanced corrosion protection of waterborne polyurethane coatings using highly dispersed polyaniline-graphene composites 利用高度分散的聚苯胺-石墨烯复合材料增强水性聚氨酯涂料的防腐性能

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-05-01 Epub Date: 2026-01-30 DOI: 10.1016/j.porgcoat.2026.110011

Qiuyuan Huang , Ge Cao , ShiJia Zhang , Baolong Liu , Zhengyu Wang , Enhou Han

Corrosion is one of the leading causes of material degradation and structural failure, highlighting the urgent need for environmentally friendly and high-performance protective coatings. In this work, a series of graphene–polyaniline (G-PANI) nanocomposites were synthesized via tannic acid-assisted in situ oxidative polymerization, and incorporated into waterborne polyurethane (WPU) matrices at loadings of 0–2.0 wt%. Morphological and spectroscopic analyses confirm that at 1.5 wt%, G-PANI forms a uniformly dispersed and well-bonded conductive network. Electrochemical impedance spectroscopy (EIS) and polarization tests reveal that the 1.5 wt% G-PANI/WPU coating maintains a low-frequency impedance of >5 × 10⁷ Ω·cm² and a corrosion current density of 1.07 × 10⁻⁸ A·cm⁻² after 30 days of immersion in 3.5 wt% NaCl, corresponding to a corrosion rate of 4.89 × 10⁻³ mpy—dramatically lower than that of the unmodified WPU (189.8 mpy). Salt spray testing further shows minimal scribe creep width (1–2 mm, ASTM D1654 Rating 8–9) and negligible blistering (ASTM D714 Size 8/Few) for the 1.5 wt% sample, indicating superior durability. XPS results indicate a synergistic protection mechanism involving graphene-based tortuous diffusion barriers, Cl⁻ capture by protonated PANI, and interfacial Fe(III) passivation. Additionally, infrared thermography and UV–Vis spectroscopy confirm that G-PANI enhances broadband UV/NIR absorption and nonradiative heat conversion. The 1.5 wt% coating demonstrates excellent photothermal and anti-UV aging performance, attributed to the π-conjugated architecture and improved filler dispersion. These results highlight a facile strategy for designing multifunctional, eco-friendly waterborne coatings with optimized corrosion and optical resistance.

腐蚀是导致材料降解和结构失效的主要原因之一，这凸显了对环保和高性能保护涂层的迫切需求。在这项工作中，通过单宁酸辅助原位氧化聚合合成了一系列石墨烯-聚苯胺（G-PANI）纳米复合材料，并将其以0-2.0 wt%的负载掺入水性聚氨酯（WPU）基质中。形态和光谱分析证实，在1.5 wt%时，g -聚苯胺形成均匀分散且键合良好的导电网络。电化学阻抗谱（EIS）和极化测试表明，在3.5 wt% NaCl中浸泡30天后，1.5 wt% G-PANI/WPU涂层的低频阻抗为5 × 107 Ω·cm2，腐蚀电流密度为1.07 × 10−8 a·cm−2，腐蚀速率为4.89 × 10−3 mpy，显著低于未改性的WPU涂层（189.8 mpy）。盐雾测试进一步显示，对于1.5% wt%的样品，最小的划痕蠕变宽度（1-2毫米，ASTM D1654等级8 - 9）和可忽略不计的起泡（ASTM D714尺寸8/Few），表明优异的耐用性。XPS结果表明，协同保护机制涉及石墨烯基弯曲扩散屏障、质子化聚苯胺捕获Cl−和界面Fe（III）钝化。此外，红外热成像和紫外可见光谱证实了G-PANI增强了宽带紫外/近红外吸收和非辐射热转换。由于π共轭结构和填料分散性的改善，该涂层具有优异的光热性能和抗紫外线老化性能。这些结果强调了一种设计多功能、生态友好型水性涂料的简单策略，该涂料具有优化的耐腐蚀性和耐光性。

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引用次数: 0

Robust anti-fogging coatings based on silicate-PVA composites: achieving high transparency, hydrophilicity, durability and self-cleaning 基于硅酸盐-聚乙烯醇复合材料的坚固防雾涂料：实现高透明度，亲水性，耐用性和自清洁

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-05-01 Epub Date: 2026-01-29 DOI: 10.1016/j.porgcoat.2026.110005

Xiao Lu, Xiaoyi Liu, Qingqing Zhang, Ren Liu, Jing Luo

Hydrophilic coatings have significant advantages in anti-fogging but are still hampered by the difficulty in concurrently optimizing hydrophilicity, durability, and light transmittance. This study successfully fabricated a robust anti-fogging coating with excellent hydrophilicity, high transparency, and exceptional durability based on silicate and polyvinyl alcohol (PVA). The as-prepared silicate/PVA composite coating exhibited a static contact angle of 14.4 ± 1.02° and approximately 90% light transmittance, demonstrating good hydrophilicity and high transparency, along with outstanding mechanical properties including a pencil hardness of 6H and a cross-cut adhesion rating of grade 0. In addition, it maintained over 85% light transmittance in both high-temperature steam (60–90 °C) and low-temperature cold fog (4 °C) environments, which demonstrated exceptional anti-fogging performance across a broad temperature range. Furthermore, the coating possessed long-term anti-fogging capability, maintaining stable hydrophilicity and high transmittance after undergoing different tests-400 abrasion cycles under a 500 g load, chemical immersion, and high-temperature treatment. Additionally, the coating exhibited self-cleaning capability that effectively suppressed dust and oil adhesion, which confirmed its anti-dust and anti-fouling performance. These results indicated the coating's potential for application in optical transparent devices.

亲水性涂料在防雾方面具有显著的优势，但难以同时优化亲水性、耐久性和透光性。本研究成功制备了一种以硅酸盐和聚乙烯醇（PVA）为基材，具有优异的亲水性、高透明度和优异的耐久性的抗雾涂层。所制备的硅酸盐/聚乙烯醇复合涂层的静态接触角为14.4±1.02°，透光率约为90%，具有良好的亲水性和高透明度，具有优异的机械性能，包括铅笔硬度为6H，横向附着力等级为0级。此外，它在高温蒸汽（60-90°C）和低温冷雾（4°C）环境下均保持85%以上的透光率，在很宽的温度范围内表现出优异的防雾性能。此外，涂层经过500 g载荷下400次磨损、化学浸泡和高温处理等不同测试，具有长期抗雾能力，保持稳定的亲水性和高透光性。此外，涂层具有自清洁能力，有效地抑制了灰尘和油脂的粘附，从而证实了涂层的防尘和防污性能。这些结果表明了该涂层在光学透明器件中的应用潜力。

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引用次数: 0

Flame-retardant functionalized biobased carbon dots as nanoenhancers for flame retardant, transparent and UV-shielding properties of epoxy resin 阻燃功能化生物基碳点纳米增强剂对环氧树脂的阻燃、透明和防紫外线性能的影响

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-05-01 Epub Date: 2026-01-31 DOI: 10.1016/j.porgcoat.2026.109985

Qinting Su , Haonan Li , Yang Leng , Yushang Wei , Xiaoli Li , Miaojun Xu , Bin Li

The concurrent integration of high flame retardancy and optical transparency into epoxy resins (EP) presents a considerable challenge in 5G technology. In this study, the bio-carbon dots (CDs) were successfully synthesized by a one-step hydrothermal method using corncob, ethylenediamine (EDA), and 2-carboxyethyl(phenyl)phosphinic acid (CEPPA) as raw materials. The phosphorus modification CDs (PCDs) were further functionalized through a nucleophilic substitution reaction between CDs and diphenylphosphinic chloride (DPPC). Then PCD used as functional fillers incorporated into epoxy resin to prepare a series of EP/PCDs composites. Interestingly, apart from flame retardancy, the prepared PCDs demonstrated additional capabilities in UV protection, optical transparency, and mechanical reinforcement. When the PCDs addition reached 5 wt%, the EP composite achieved a UL-94 V-0 rating and an LOI value of 36.5%. Relative to pure EP, the EP/PCDs composite exhibited marked reductions in peak heat release rate (pHRR), total heat release (THR), and carbon dioxide production (CO₂P) by 33.4%, 20.1%, and 26.4%, respectively. In addition, EP/5PCDs composites exhibited a 19.8% and 21.4% enhancement in tensile and impact strength, respectively, while retaining their fluorescent properties. Furthermore, the transmittance of EP/5PCDs composites was reduced to 2% at UV-A wavelengths, which indicated that PCDs enhanced UV shielding properties. Meanwhile, EP/5PCDs composites maintained outstanding transparency and also exhibited good the thermal decomposition stability. To conclude, the EP/PCDs composite achieved a balance between flame retardancy, transparency, mechanical properties, and additional functionalities, demonstrating significant potential for anti-counterfeiting and advanced technological applications.

在5G技术中，将高阻燃性和光学透明度同时集成到环氧树脂（EP）中是一个相当大的挑战。本研究以玉米芯、乙二胺（EDA）和2-羧基乙基（苯基）膦酸（CEPPA）为原料，采用一步水热法制备了生物碳点（CDs）。通过与二苯膦酰氯（DPPC）的亲核取代反应，进一步实现了磷改性CDs （PCDs）的功能化。然后将PCD作为功能填料掺入环氧树脂中，制备了一系列EP/PCDs复合材料。有趣的是，除了阻燃性外，制备的PCDs在紫外线防护、光学透明度和机械增强方面也表现出了额外的能力。当PCDs添加量达到5 wt%时，EP复合材料达到UL-94 V-0额定值，LOI值为36.5%。与纯EP相比，EP/PCDs复合材料的峰值放热率（pHRR）、总放热率（THR）和二氧化碳产量（CO2P）分别降低了33.4%、20.1%和26.4%。此外，EP/5PCDs复合材料的拉伸强度和冲击强度分别提高了19.8%和21.4%，同时保持了原有的荧光性能。此外，EP/5PCDs复合材料在UV- a波段的透过率降至2%，表明PCDs增强了对UV的屏蔽性能。同时，EP/5PCDs复合材料保持了良好的透明性，并表现出良好的热分解稳定性。综上所述，EP/PCDs复合材料在阻燃性、透明度、机械性能和附加功能之间取得了平衡，显示出防伪和先进技术应用的巨大潜力。

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引用次数: 0

A one-stone-two-birds tactic: Pyrolysis-driven durable superhydrophobic wood/bamboo with photothermal effect for outdoor ice prevention 一石两鸟策略：热裂解驱动的耐用超疏水木材/竹子具有光热效应，用于室外防冰

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-05-01 Epub Date: 2026-01-30 DOI: 10.1016/j.porgcoat.2026.109999

Jiayun Su , Minfeng Huang , Jiankun Wu , Jianyu Wu , Yuying Yang , Yan Yu , Rilong Yang

As a renewable building material, wooden material is susceptible to frost and icing when exposed to harsh outdoor conditions, which not only severely affects the service life of wood but also cause significant safety hazards. Constructing superhydrophobic wooden surfaces with photothermal functions is an effective way to delay droplet freezing and ice accumulation. However, this modification strategy always involves complex preparation processes, and the durability of these superhydrophobic wooden surfaces is unsatisfactory. In this work, a one-stone-two-birds tactic to construct durable superhydrophobic wood/bamboo surface with photothermal effect was proposed. By thermally decomposing wood pre-coated with a polydimethylsiloxane/hydroxyapatite nanospheres (PDMS/HAP) layer, PDMS was converted into silica nanoparticles with silane on the surface, and a carbon layer with photothermal conversion properties was formed on the wooden surface. The simultaneous generation of hydrophobic silica nanoparticles and a carbon layer endowed the wood/bamboo surface with durable superhydrophobic properties and photothermal conversion capabilities. This method can be applied to various wood species and bamboo. The obtained wooden superhydrophobic surface exhibited a water contact angel of 160.5°, and has excellent durability. This superhydrophobic surface could not only withstand physical abrasion such as sandpaper abrasion and water impact, but also maintain its superhydrophobicity after exposure to chemical corrosion and UV irradiation. This superhydrophobic layer also provided the wooden materials with good dimensional stability and moisture resistance. In addition, the photothermal conversion effect enabled the wood surface to rapidly rise to 55.3 °C under one sun illumination, and ice crystals slid off its surface within 8 s. This work presents a simple and promising strategy for constructing photothermal and superhydrophobic layer on wood/bamboo surface, and is expected to mitigate the frosting and icing problems of wooden building materials in cold conditions and extend their service life.

木质材料作为一种可再生的建筑材料，暴露在恶劣的室外条件下，容易发生霜冻结冰，不仅严重影响木材的使用寿命，还会造成重大的安全隐患。构建具有光热功能的超疏水木质表面是延缓液滴冻结和积冰的有效途径。然而，这种改性策略总是涉及复杂的制备过程，并且这些超疏水木质表面的耐久性令人不满意。在这项工作中，提出了一种一石两鸟的策略来构建具有光热效应的耐用超疏水木/竹表面。通过热分解预涂有聚二甲基硅氧烷/羟基磷灰石纳米球（PDMS/HAP）层的木材，PDMS转化为表面含有硅烷的二氧化硅纳米颗粒，并在木材表面形成具有光热转化性能的碳层。同时生成的疏水二氧化硅纳米颗粒和碳层赋予木材/竹子表面持久的超疏水性能和光热转换能力。这种方法适用于各种木材和竹子。所得木质超疏水表面的水接触角为160.5°，具有良好的耐久性。这种超疏水表面既能承受砂纸磨损和水冲击等物理磨损，又能在化学腐蚀和紫外线照射下保持其超疏水性。该超疏水层还为木质材料提供了良好的尺寸稳定性和防潮性。此外，光热转换效应使木材表面在一次太阳照射下迅速上升到55.3°C，冰晶在8 s内从其表面脱落。本研究提出了一种在木材/竹子表面构建光热超疏水层的简单而有前途的策略，有望缓解木质建筑材料在寒冷条件下的结霜和结冰问题，延长其使用寿命。

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引用次数: 0

Screening of potential abiotic and bio-based coatings for enhancing the mechanical properties and water resistance of coir geotextiles 增强椰壳土工布力学性能和耐水性的潜在非生物和生物基涂层的筛选

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-05-01 Epub Date: 2026-01-30 DOI: 10.1016/j.porgcoat.2026.110007

Tianxiang Peng, Liangyong Li, Jiacheng Chen, Yang Lin, Gengxin Li, Yang Gao

Physical coating plays a crucial role in extending the service life of coir geotextiles and enhancing their performance. In this study, six potential coatings were selected for preliminary evaluation: natural latex, shellac, rosin, chitosan, bitumen emulsion, and epoxy resin. The coating properties, including drying time, kinematic viscosity, hardness, water resistance, and hydrophobicity, were assessed. Additionally, the mass change rates of coir geotextiles before and after soaking were measured. The tensile load-extension curves of coir geotextiles before and after soaking were obtained, and tensile strength was calculated. The microstructure of the geotextiles was observed. The results indicated that after seven days of drying and curing, the pencil hardness of the epoxy resin coating was 3H, while all other coatings had a pencil hardness of 6B. Water resistance was found to be superior in bitumen emulsion, epoxy resin, and chitosan coatings compared to the others. In terms of mass change, the coir geotextiles coated with epoxy resin experienced the lowest mass increase at 24 h, with a value of only 31.55%. In their dry state, the tensile strength of coir geotextiles coated with epoxy resin, bitumen emulsion, and natural latex increased by 33.8%, 23.2%, and 24.6%, respectively, compared to untreated geotextiles. Considering the water resistance, hardness, mass change rate, and tensile strength, epoxy resin was the most suitable coating for coir geotextiles.

物理涂层对延长椰壳土工布的使用寿命和提高其性能起着至关重要的作用。本研究选择了天然乳胶、紫胶、松香、壳聚糖、沥青乳液和环氧树脂六种潜在的涂料进行初步评价。涂层性能，包括干燥时间，运动粘度，硬度，耐水性和疏水性进行了评估。此外，还测量了椰壳土工布浸泡前后的质量变化率。获得了椰壳土工布浸泡前后的拉伸载荷-拉伸曲线，并计算了其抗拉强度。观察了土工布的微观结构。结果表明，经过7天的干燥固化，环氧树脂涂层的铅笔硬度为3H，而其他涂层的铅笔硬度均为6B。沥青乳液涂料、环氧树脂涂料和壳聚糖涂料的耐水性较好。在质量变化方面，涂覆环氧树脂的椰壳土工布在24 h时质量增量最小，仅为31.55%。在干燥状态下，涂覆环氧树脂、沥青乳液和天然乳胶的椰壳土工布的抗拉强度分别比未涂覆的土工布提高33.8%、23.2%和24.6%。从耐水性、硬度、质量变化率、抗拉强度等方面综合考虑，环氧树脂是最适合用于coir土工布的涂料。

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引用次数: 0

In-situ metal-chelated bio-epoxy coatings from epoxidized soybean oil and salicylic acid for controlled-release fertilizers 控释肥料用环氧大豆油水杨酸原位金属螯合生物环氧涂料

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-05-01 Epub Date: 2026-01-29 DOI: 10.1016/j.porgcoat.2026.110001

Zenan Zou , Shiping Wang , Lushen Shen , Jiaxin Pan , Ke Li , Yingying Zhan , Lijuan Shen , Ganchang Lei , Lilong Jiang

Bio-based epoxy resins offer a sustainable alternative to petroleum-derived polymers, but their adoption is often limited by inferior mechanical properties, high costs, and reliance on toxic hardeners. This study presents a fully bio-based epoxy resin synthesized through the solvent-free curing of epoxidized soybean oil (ESO) with salicylic acid (SA), a natural hardener with plant-regulating properties. To overcome SA's poor compatibility with ESO and low reactivity below its melting point, an in-situ metal chelation strategy was employed, enhancing both curing kinetics and mechanical performance through the formation of a reinforcing metal-supramolecular network. The resulting resin cured rapidly at 120 °C in just one hour, exhibiting superior toughness and strength (tensile strength = 8.05 MPa, elongation at break = 103.50%). When applied as a 3 wt% coating with 0.3 wt% wax on fertilizer granules, the resin demonstrated excellent controlled-release performance, retaining 72.2% of nitrogen after 28 days. Unlike previously reported bio-based epoxy resins, this system combines rapid low-temperature curing with superior mechanical properties, significantly reducing energy consumption and processing time. Additionally, its soil-degradable nature and cost-effective, eco-friendly synthesis make it a promising candidate for sustainable agricultural materials. This work advances the development of high-performance bio-based polymers with practical industrial scalability.

生物基环氧树脂是石油衍生聚合物的可持续替代品，但其采用往往受到机械性能差、成本高以及依赖有毒硬化剂的限制。采用天然固化剂水杨酸（SA）对环氧大豆油（ESO）进行无溶剂固化，合成了一种全生物基环氧树脂。为了克服SA与ESO的相容性差和熔点以下反应性低的问题，采用了原位金属螯合策略，通过形成增强的金属-超分子网络来提高固化动力学和力学性能。所得树脂在120°C下仅需1小时即可快速固化，具有优异的韧性和强度（抗拉强度= 8.05 MPa，断裂伸长率= 103.50%）。当以3 wt%的涂层和0.3 wt%的蜡涂在肥料颗粒上时，树脂表现出优异的控释性能，28天后保留了72.2%的氮。与之前报道的生物基环氧树脂不同，该系统结合了快速低温固化和优越的机械性能，显著降低了能耗和加工时间。此外，它的土壤可降解性和成本效益，生态友好的合成使其成为可持续农业材料的有希望的候选者。这项工作促进了具有实际工业可扩展性的高性能生物基聚合物的发展。

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引用次数: 0

Rice-leaf-inspired high-strength and multifunctional superhydrophobic paper using flaky beeswax particles and amino-modified SiO2 within coatings 以稻叶为灵感的高强度多功能超疏水纸，在涂层内使用片状蜂蜡颗粒和氨基改性SiO2

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-05-01 Epub Date: 2026-01-31 DOI: 10.1016/j.porgcoat.2026.110009

Qing Wu , Yanyang Lei , Heyi Wang , Renjie Yao , Jianfeng Zhu

Superhydrophobic paper offers great promise for applications from daily life to artistic creation and cultural preservation, whereas, the difficulties of transparency, simplicity, mechanical fragility and green sustainability limit its implementation. Inspired by the superhydrophobicity of rice leaves, herein, micro-sized flaky beeswax particles were prepared and creatively mixed with hydrophilic nano-sized amino-modified SiO₂ in diverse ratios, and subsequently sprayed onto polydimethylsiloxane-pretreated Xuan paper surface for obtaining transparent (transmittance value of 37.4% ∼ 43.9%>original paper of 36.6%) superhydrophobic coatings coupled with acid-alkali-resistance, self-cleaning property, and mechanical durability. When the ratio of beeswax particles to SiO₂ is 1:9, the coating maintained its superhydrophobicity (≥150°) after exposure to tape peeling, sandpaper abrasion, finger rubbing, and acid-alkali corrosion (pH = 5, 10). Meanwhile, this coating achieves a 36.7% increase in tensile strength of paper relative to the original one. The superior protective mechanism arises from the strong coating-paper interfacial adhesion, uniform SiO₂ distribution, and the dule role of a spot of beeswax particles in providing both binding and low surface energy. This strategy yields a balanced solution for water-repellent Xuan paper that combines simplicity, sustainability, high strength, and multi-functionality, making it suitable for fragile paper applications.

超疏水纸在日常生活、艺术创作和文化保护等方面的应用前景广阔，但其透明度、简单性、机械脆弱性和绿色可持续性等方面的困难限制了其应用。本文以水稻叶片的超疏水性为灵感，制备了微型片状蜂蜡颗粒，并将其与亲水性纳米级氨基改性SiO2按不同比例创造性地混合，然后喷涂在聚二甲基硅氧烷预处理的宣纸表面，获得透明（透光率为37.4% ~ 43.9%>；原纸为36.6%）、具有耐酸碱性、自洁性和机械耐久性的超疏水涂层。当蜂蜡颗粒与SiO2的比例为1:9时，涂层经过胶带剥落、砂纸磨损、手指摩擦、酸碱腐蚀（pH = 5,10），均保持超疏水性（≥150°）。与此同时，该涂层使纸张的抗拉强度比原涂层提高了36.7%。优异的保护机制源于涂层-纸界面的强附着力，均匀的SiO2分布，以及蜂蜡颗粒在提供结合和低表面能方面的作用。这种策略为防水宣纸提供了一种平衡的解决方案，结合了简单，可持续性，高强度和多功能，使其适用于易碎纸的应用。

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引用次数: 0

Synergistic interfacial photothermal and Marangoni salt resistance effects for photocatalytic seawater hydrogen generation in dome aerogel-supported catalyst coatings 穹顶气凝胶负载型催化剂涂层光催化海水制氢的协同界面光热和Marangoni耐盐效应

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-05-01 Epub Date: 2026-01-31 DOI: 10.1016/j.porgcoat.2026.109986

Shizhe Zhang , Bin Wang , Jing Lu , Yi Xiong , Junhua Zhang , Yinghui Sai , Yingying Li , Yi Wu , Dong Wang

Harnessing solar energy storage in chemical bonds to convert seawater into clean fuels is conducive to alleviating the energy crisis. However, the low solar energy utilization efficiency and the damage of high salinity to catalytic activity remain formidable challenges. Herein, a strategically designed dome-shaped aerogel-coated a water film and black photocatalyst system is proposed, which depends on the interfacial photothermal effect and the Marangoni effect's salt resistance to boost H₂ evolution (24.6 mmol g⁻¹ h⁻¹) from seawater. Through H₂ production experiments, in-situ tests, and theoretical simulations, the device demonstrates that thermal activation decreases the photocatalytic activation energy barrier and accelerates reaction kinetics. Further systematic salt release experiments, integrated with the electric double-layer theory, demonstrate that the photothermal gradient distribution on the dome induces salt reflux driven by the surface tension gradient, which is capable of retaining active sites and enhancing catalyst stability. This work reveals the kinetic mechanisms of phonon-chemical energy coupling during photon conversion and salt ion-facilitated interfacial mass transfer in seawater splitting.

利用化学键储存太阳能，将海水转化为清洁燃料，有助于缓解能源危机。然而，低太阳能利用效率和高盐度对催化活性的破坏仍然是一个严峻的挑战。本文提出了一种通过界面光热效应和Marangoni效应的耐盐性来促进海水中氢气析出（24.6 mmol g−1 h−1）的球形气凝胶包覆水膜和黑色光催化剂体系。通过产氢实验、现场测试和理论模拟，该装置证明了热活化降低了光催化活化能垒，加速了反应动力学。进一步系统的盐释放实验，结合电双层理论，证明了穹顶上的光热梯度分布在表面张力梯度的驱动下引起盐回流，从而能够保留活性位点，提高催化剂的稳定性。本研究揭示了海水分裂过程中光子转换过程中声子-化学能耦合和盐离子促进界面传质的动力学机制。

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引用次数: 0

UV-curable non-isocyanate polyurethane/acrylate (NIPUA) hybrid coatings via transurethanization: A sustainable approach 光固化非异氰酸酯聚氨酯/丙烯酸酯（NIPUA）复合涂料：一种可持续发展的方法

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-05-01 Epub Date: 2026-01-29 DOI: 10.1016/j.porgcoat.2026.109989

Iker Razquin , Iker Hidalgo-Gallardo , Higer Balda-Intxaurraga , Loli Martin , Itziar Otaegi , Lourdes Irusta , Alba González

(Meth)Acrylic end-capped non-isocyanate polyurethanes (NIPUAs) were synthesized via transurethanization. The resulting prepolymers were then blended with acrylic monomers to produce UV-curable hybrid urethane/acrylic coatings. The structural characterization of the prepolymers before curing was performed using Fourier transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance (¹H NMR), and carbon nuclear magnetic resonance (¹³C NMR). Thermal properties were evaluated using differential scanning calorimetry (DSC) and thermo gravimetric analysis (TGA). The curing reaction was analyzed by “in situ” photo FTIR and photo calorimetry, achieving high conversion within a few seconds. In the cured samples, the incorporation of NIPUA into acrylate matrix resulted in a decrease in the glass transition temperature (T_g), providing enhanced flexibility. All the coatings showed good water and solvent resistance, as well as good adhesion to pine wood. The hardness increased with the acrylic content of the coatings. The results show that the NIPUA/acrylate blends can be tailored according to the requirements of specific coating applications, highlighting their potential as safer and environmentally friendly alternatives to isocyanate-based polyurethane coatings.

（甲基）丙烯酸端帽非异氰酸酯聚氨酯（NIPUAs）通过跨surethanization合成。然后将所得的预聚物与丙烯酸单体混合，制成紫外光固化的聚氨酯/丙烯酸混合涂料。利用傅里叶变换红外光谱（FTIR）、质子核磁共振（1H NMR）和碳核磁共振（13C NMR）对固化前预聚物进行了结构表征。热性能采用差示扫描量热法（DSC）和热重分析（TGA）进行评估。采用“原位”红外光谱和光量热法对固化反应进行了分析，在几秒内实现了高转化率。在固化样品中，将NIPUA掺入丙烯酸酯基体导致玻璃化转变温度（Tg）降低，提供了增强的柔韧性。所有涂层均具有良好的耐水性和耐溶剂性，对松木具有良好的附着力。硬度随涂料中丙烯酸含量的增加而增加。结果表明，NIPUA/丙烯酸酯混合物可以根据特定涂料应用的要求进行定制，突出了它们作为异氰酸酯基聚氨酯涂料更安全、更环保的替代品的潜力。

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引用次数: 0

Biogenic nanomaterial-based mitigation of multi-metal microbiologically influenced corrosion 基于生物源纳米材料的多金属微生物影响腐蚀缓释

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-04-01 Epub Date: 2026-01-28 DOI: 10.1016/j.porgcoat.2026.109984

Muthukumar Krishnan , Harinee Subramanian , Arulmozhi Muthukumarasamy , Duan Jizhou

Toxic and non-toxic alloy coupons were exposed to various environmental conditions annually to study microbiologically influenced corrosion (MIC) communities. This study provides the first evidence of gram-positive bacteria responsible for MIC-accelerated pitting corrosion on both toxic and non-toxic alloy coupons. Across coupons under different environmental conditions, gram-positive bacteria predominantly showed MICs higher than those of gram-negative bacteria. The main MIC strains B. horikoshii (PQ549955), B. jeotgali (PQ554780), B. safensis (PQ554710), B. infantis (PQ554706), B. aryabhattai (PQ554711), E. mexicanum (PQ554714), S. sciuri (PQ554798), S. haemolyticus (PQ554797), and P. celer (PQ554704) were identified through 16S rDNA sequencing. Marine environments induce more aggressive pitting corrosion than freshwater environments because chloride and sulfur ions in seawater penetrate oxide films on metal surfaces. SEM and 3D laser microscopy results confirmed that marine conditions lead to significantly more aggressive pitting corrosion on the coupons. This study also systematically explored ‘One-Pot’ green-fused nanomaterials synthesized with Turbinaria ornata (TO) extracts and characterized by various techniques. The TOZnO@CdO-NCs showed maximum activity against P. celer and the least growth inhibition in B. jeotgali and B. safensis. This likely involves the accumulation of TOZnO@CdO-NCs in bacterial cell membranes, disrupting physiological functions or causing cell death. Overall, the TOZnO@CdO-NCs show strong potential as innovative anti-corrosion coatings for marine applications and may soon be incorporated into protective paints.

有毒和无毒合金片每年暴露在不同的环境条件下，研究微生物影响的腐蚀（MIC）群落。这项研究提供了革兰氏阳性细菌对有毒和无毒合金表面的mic加速点蚀负责的第一个证据。在不同的环境条件下，革兰氏阳性菌的mic明显高于革兰氏阴性菌。通过16S rDNA测序鉴定出主要的MIC菌株：博氏芽孢杆菌（borikoshii）（PQ549955）、jeotgali芽孢杆菌（PQ554780）、safensis芽孢杆菌（PQ554710）、婴儿芽孢杆菌（PQ554706）、aryabhattai芽孢杆菌（PQ554711）、墨西哥芽孢杆菌（PQ554714）、sciuri芽孢杆菌（PQ554798）、溶血性芽孢杆菌（PQ554797）和celer芽孢杆菌（PQ554704）。由于海水中的氯离子和硫离子能穿透金属表面的氧化膜，因此海洋环境比淡水环境更容易引起剧烈的点蚀。SEM和3D激光显微镜的结果证实，海洋环境导致了更严重的点蚀。本研究还系统探索了以鸟Turbinaria ornata （TO）提取物为原料合成的“一锅”绿色融合纳米材料，并采用各种技术对其进行表征。TOZnO@CdO-NCs对葡萄球菌的抑菌活性最大，对白僵菌和白僵菌的抑菌活性最小。这可能涉及TOZnO@CdO-NCs在细菌细胞膜中的积累，破坏生理功能或导致细胞死亡。总体而言，TOZnO@CdO-NCs显示出强大的潜力，作为创新的防腐涂料用于船舶应用，并可能很快纳入保护漆。

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