Surfaces and Interfaces最新文献_第10页

Integrated experimental and theoretical study of CuO/ZnO nanocomposites for photocatalytic and supercapacitor applications CuO/ZnO纳米复合材料在光催化和超级电容器中的综合实验和理论研究

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-03-01 Epub Date: 2026-01-21 DOI: 10.1016/j.surfin.2026.108506

Raguram Thangavel , Raksha A , Vishnu Narayanan V , Madeshwaran Mohanraj , M.R. Venkatraman , K.S. Rajni , Michael Zambrano-Angulo , Kevin Granados-Tavera , Javier J. Santaella , Gloria Cárdenas-Jirón

In this study, CuO, ZnO, and CuO/ZnO nanocomposites were synthesized via a sol-gel method and systematically investigated for photocatalytic and supercapacitor applications. XRD confirmed the formation of monoclinic CuO, hexagonal wurtzite ZnO, and a composite structure free of secondary phases, with average crystallite sizes of 26, 34, and 19 nm, respectively. FTIR and Raman analyses verified the presence of characteristic metal-oxide vibrations, while UV-DRS revealed band gaps of 2.30, 3.16, and 2.60 eV for CuO, ZnO, and CuO/ZnO. FESEM showed uniform dispersion of CuO over ZnO, and EDS confirmed elemental homogeneity. The CuO/ZnO nanocomposite achieved a Rhodamine-B degradation efficiency of 92.6 % within 180 min, following pseudo-first-order kinetics (k = 0.0168 min⁻¹, t_1/2 = 41.2 min), outperforming CuO (33.6 %) and ZnO (67.1 %). Electrochemical measurements demonstrated a specific capacitance of 98 F g^-1 at 0.5 A g^-1, with 84.1 % retention after 5000 cycles and low charge transfer resistance (17.6 Ω), confirming superior energy‐storage capability. DFT calculations revealed bidentate adsorption of Rhodamine-B on the CuO/ZnO interface with optimal interaction energy (-8.67 eV), reduced band gap, and enhanced density of states near the Fermi level, explaining the observed experimental efficiency. Overall, the synergistic heterojunction interface in CuO/ZnO enhances charge separation, photocatalytic reactivity, and electrochemical performance, making it a promising multifunctional material for environmental and energy applications.

本研究采用溶胶-凝胶法合成了CuO、ZnO和CuO/ZnO纳米复合材料，并系统地研究了它们在光催化和超级电容器中的应用。XRD证实形成了单斜CuO、六方纤锌矿ZnO和无二次相的复合结构，平均晶粒尺寸分别为26、34和19 nm。FTIR和Raman分析证实了特征金属氧化物振动的存在，而UV-DRS显示CuO， ZnO和CuO/ZnO的带隙分别为2.30,3.16和2.60 eV。FESEM显示CuO在ZnO上均匀分散，EDS证实元素均匀性。CuO/ZnO纳米复合材料在180 min内达到92.6%的罗丹明- b降解效率，遵循准一级动力学（k = 0.0168 min毒毒学¹，t1/2 = 41.2 min），优于CuO（33.6%）和ZnO（67.1%）。电化学测量表明，在0.5 a g-1下，比电容为98 F -1，在5000次循环后保持率为84.1%，电荷转移电阻低（17.6 Ω），证实了优越的储能能力。DFT计算表明，罗丹明- b在CuO/ZnO界面上的双齿吸附具有最佳的相互作用能（-8.67 eV），减小了带隙，增强了费米能级附近的态密度，解释了观察到的实验效率。总的来说，CuO/ZnO的协同异质结界面增强了电荷分离、光催化反应性和电化学性能，使其成为一种有前景的环境和能源多功能材料。

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引用次数: 0

Preparation and corrosion behavior of MgAl-LDH layers on magnesium compacts prepared by powder metallurgy 粉末冶金镁合金致密体上MgAl-LDH层的制备及其腐蚀行为

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-03-01 Epub Date: 2026-01-28 DOI: 10.1016/j.surfin.2026.108617

Martin Buchtík , Matěj Březina , Jiří Másilko , Daniel Kajánek , Ivo Kuběna , Stanislava Fintová , Leoš Doskočil

Magnesium materials were classified as biodegradable materials. However, their poor corrosion resistance hinders their widespread use. To increase corrosion resistance, LDH layers can be applied to their surface. In this work, MgAl-LDH layers were produced for the first time on Mg compact prepared by powder metallurgy. The preparation of LDH layers was performed by one-step in situ deposition under optimal conditions for 9 h at 95 °C. The higher deposition time led to a significant increase in the Mg(OH)₂ content in the Mg compact and to the occurrence of structural defects. The MgAl-LDH layer had a positive effect on the corrosion properties of Mg compacts in Hank's solution. The corrosion behavior differed in some aspects from conventional Mg materials. The corrosion induced the formation of hydroxyapatite, which initially formed on the LDH layer and improved the corrosion resistance. After the LDH layer was broken, the structural nature of Mg compacts led to intense degradation, which limited the protective effect of corrosion products. Coating thus appears to be a viable and suitable strategy for improving the corrosion properties of Mg materials prepared by powder metallurgy.

镁材料被归类为可生物降解材料。然而，它们的耐腐蚀性差阻碍了它们的广泛使用。为了提高耐腐蚀性，可以在其表面施加LDH层。本文首次在粉末冶金法制备的镁合金致密体上制备了MgAl-LDH层。在95°C的最佳条件下，一步原位沉积9h，制备LDH层。随着沉积时间的延长，镁合金中Mg(OH)2含量显著增加，导致结构缺陷的发生。MgAl-LDH层对Mg合金在Hank’s溶液中的腐蚀性能有积极的影响。其腐蚀行为与常规镁材料在某些方面存在差异。腐蚀诱导羟基磷灰石的形成，羟基磷灰石最初形成在LDH层上，提高了材料的耐蚀性。在LDH层被破坏后，Mg致密体的结构性质导致了强烈的降解，这限制了腐蚀产物的保护作用。因此，涂层是改善粉末冶金制备的镁材料腐蚀性能的可行和合适的策略。

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引用次数: 0

Optimizing thermophysical performance and interfacial molecular stability of tetrapropylammonium bromide–glycerol deep eutectic solvents through deionized water-induced structural modulation 通过去离子水诱导的结构调制优化四丙基溴化铵-甘油深共晶溶剂的热物理性能和界面分子稳定性

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-03-01 Epub Date: 2026-01-14 DOI: 10.1016/j.surfin.2026.108494

Reza Razi-Asrami, Javad Ahmadpour, Yaser Vosoughi, Seyed Reza Shabanian

Understanding and controlling the thermophysical behavior of deep eutectic solvents (DESs) in aqueous environments is essential for their application in thermal management, electrochemical, and energy conversion systems. In this study, a DES composed of tetrapropylammonium bromide and glycerol at a 3:1 molar ratio was synthesized and examined in its pure form and in mixtures containing 10%, 20%, 50%, 80%, and 90% deionized water (DI-water). The objective was to identify the optimal DES–DI-water composition, elucidate how DI-water molecules influence the internal hydrogen-bonding network, and assess the resulting impact on thermophysical properties and molecular stability. Comprehensive structural analyses using Fourier transform infrared (FTIR) and proton and carbon nuclear magnetic resonance (¹H and ¹³C NMR) spectroscopy confirmed uniform dispersion of DI-water and preservation of the eutectic framework up to 50% content, highlighting the remarkable structural resilience of the system. Measurements of viscosity, density, and thermal conductivity revealed strong coupling between hydrogen-bond interactions and transport phenomena, indicating that even subtle molecular reorganizations can significantly alter macroscopic behavior and precisely overall system performance. At 50% DI-water, viscosity decreased by approximately 45–50%, while thermal conductivity increased by nearly 30% relative to the neat DES, due to enhanced molecular mobility and improved interfacial heat transfer pathways. The mixture also exhibited high structural and thermal stability up to 160 °C, verifying its consistent operational robustness. Overall, controlled hydration represents an effective, tunable, and sustainable molecular engineering strategy to optimize interfacial organization, thermophysical efficiency, and environmental performance of DES-based fluids for advanced energy and heat transfer applications.

了解和控制深共晶溶剂（DESs）在水环境中的热物理行为对其在热管理、电化学和能量转换系统中的应用至关重要。本研究合成了一种由四丙基溴化铵和甘油按3:1摩尔比组成的DES，并在其纯形式和含有10%、20%、50%、80%和90%去离子水（DI-water）的混合物中进行了检测。目的是确定最佳DES-DI-water组成，阐明DI-water分子如何影响内部氢键网络，并评估由此对热物理性质和分子稳定性的影响。利用傅里叶变换红外（FTIR）和质子和碳核磁共振（1H和13C NMR）光谱进行综合结构分析，证实了di -水的均匀分散，并保留了高达50%含量的共晶框架，突出了体系显着的结构弹性。粘度、密度和导热系数的测量表明，氢键相互作用和输运现象之间存在强耦合，表明即使是细微的分子重组也能显著改变宏观行为和精确的整体系统性能。在含有50% di水的情况下，由于分子迁移率增强和界面传热途径改善，相对于纯DES，粘度降低了约45-50%，而导热系数增加了近30%。该混合物还表现出高达160°C的高结构和热稳定性，验证了其一贯的操作稳健性。总的来说，控制水合作用是一种有效的、可调的、可持续的分子工程策略，可以优化基于des的流体的界面组织、热物理效率和环境性能，从而实现先进的能源和传热应用。

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引用次数: 0

Decarbonization via polyethersulfone-based composite membranes containing bimetallic Zn-Co nanoferrites 含双金属Zn-Co纳米铁氧体的聚醚砜基复合膜脱碳

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-03-01 Epub Date: 2026-01-28 DOI: 10.1016/j.surfin.2026.108628

Muneerah Alomar , Kiran Shahzadi , Afraa Alotaibi , Muhammad Sarfraz

For post-combustion CO₂ capture, nanomaterials-doped polymer-based composite membranes are a viable option. In this study, Zn-Co nanoferrite (Zn_1-ₓCoₓFe₂O₄) nanoparticles were added to polyethersulfone (PES)-based composite membranes using phase inversion and solution casting techniques to improve gas separation performance. Membrane structure, porosity, mechanical strength and CO₂ separation efficiency were thoroughly examined in relation to nanoferrites annealing. CO₂ permeability increased from 25 Barrer (pristine PES) to 67 Barrer with addition of 10 weight percent annealed Zn-Co nanoferrites, whereas CO₂/N₂ selectivity remained at 23. Optical microscopy showed uniform nanoparticle dispersion with little aggregation, while structural analysis verified development of spinel-type Zn-Co ferrites with crystallite diameters of 29-45 nm. Higher gas permeation and stable separation performance resulted from improved mechanical robustness, pore homogeneity and improved interfacial compatibility between annealed ferrites and PES matrix. These findings show that designed PES/Zn-Co nanoferrite membranes have great promise for decarbonizing flue gases in an energy-efficient manner.

对于燃烧后的二氧化碳捕获，掺杂纳米材料的聚合物基复合膜是一种可行的选择。本研究将纳米Zn-Co铁素体（Zn1-ₓCoₓFe₂O₄）纳米颗粒通过相转化和溶液铸造技术添加到聚醚砜（PES）基复合膜中，以提高气体分离性能。研究了纳米铁素体退火对膜结构、孔隙率、机械强度和CO2分离效率的影响。加入10%的Zn-Co纳米铁氧体后，CO2渗透率从25 Barrer（原始PES）增加到67 Barrer，而CO2/N2选择性保持在23 Barrer。光学显微镜观察到纳米颗粒分散均匀，聚集较少，结构分析证实了尖晶石型Zn-Co铁氧体的发育，晶粒直径为29-45 nm。退火铁氧体与PES基体之间的力学稳定性、孔隙均匀性和界面相容性得到改善，从而提高了气体渗透率和稳定的分离性能。这些发现表明，设计的PES/Zn-Co纳米铁氧体膜在高效脱碳烟气方面具有很大的前景。

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引用次数: 0

In-situ growth of ZnMgAl-LDH nanosheets in anodic alumina pores: A sustainable strategy toward high-performance anticorrosion coatings 在阳极氧化铝孔中原位生长ZnMgAl-LDH纳米片：高性能防腐涂层的可持续发展策略

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-03-01 Epub Date: 2026-01-27 DOI: 10.1016/j.surfin.2026.108615

Dong Yue , Haifeng Tan , Mingzhu Hao , Zilong Wang , Zheng Jia , Chunlin He

This study addresses the long-term corrosion protection needs of 5052 aluminum alloy in marine environments. An optimized anodic oxidation process was employed to fabricate a high-porosity and strongly adherent anodic aluminum oxide (AAO) template on the 5052 aluminum alloy substrate. Subsequently, Zn²⁺, Mg²⁺, and Al³⁺ were co-precipitated in situ within the AAO nanopores and on its surface, resulting in the formation of a compact and continuous ZnMgAl-layered double hydroxide (LDHs) layer. The results revealed that ZnMgAl-LDHs nanosheets grew vertically and interlocked on the AAO film surface, exhibiting the characteristic morphology of LDHs coatings. Combined XRD, FTIR, and XPS results further confirmed the chemical composition of the LDHs and revealed chemical bonding at the AAO/LDHs interface. Electrochemical measurements demonstrated that the AAO/ZnMgAl-LDHs composite coating achieved an exceptionally low corrosion current density of 9.42 × 10^–10 A·cm^–2 and a high charge transfer resistance of 1.08 × 10⁸ Ω·cm², confirming its exceptional corrosion resistance. This performance surpassed that of both the bare AAO film and the AAO/MgAl-LDHs composite coating. Moreover, the LDH coatings exhibited outstanding resistance to both salt spray corrosion and long-term immersion corrosion. The developed process demonstrates compatibility with existing anodizing production lines, eliminating the need for complex post-treatment. This positions it as a promising alternative to conventional chromate/rare earth conversion coatings, paving the way for green and long-lasting applications of aluminum alloys in shipbuilding, offshore wind power, and related marine sectors.

本研究解决了5052铝合金在海洋环境中的长期防腐需求。采用优化的阳极氧化工艺，在5052铝合金基板上制备了高孔隙率、强附着力的阳极氧化铝模板。随后，Zn2+、Mg2+和Al3+在AAO纳米孔内和表面原位共析出，形成致密连续的znmgal层状双氢氧化物（LDHs）层。结果表明，ZnMgAl-LDHs纳米片在AAO薄膜表面垂直生长并互锁，呈现出LDHs涂层的特征形态。结合XRD， FTIR和XPS结果进一步证实了LDHs的化学组成，并揭示了AAO/LDHs界面上的化学键。电化学测试表明，AAO/ZnMgAl-LDHs复合镀层具有极低的腐蚀电流密度（9.42 × 10-10 A·cm-2）和较高的电荷转移电阻（1.08 × 108 Ω·cm2），证实了其优异的耐腐蚀性。该性能优于裸AAO膜和AAO/ mal - ldhs复合涂层。此外，LDH涂层具有优异的耐盐雾腐蚀和长期浸渍腐蚀性能。开发的工艺证明了与现有阳极氧化生产线的兼容性，消除了复杂后处理的需要。这使其成为传统铬酸盐/稀土转化涂料的有前途的替代品，为铝合金在造船，海上风电和相关海洋领域的绿色和持久应用铺平了道路。

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引用次数: 0

Advanced Mn-doped rGO/NiO/g-C₃N₄ nanocomposites for improved photocatalytic degradation of methylene blue 改进的mn掺杂rGO/NiO/g-C₃N₄纳米复合材料光催化降解亚甲基蓝

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-03-01 Epub Date: 2026-01-22 DOI: 10.1016/j.surfin.2026.108546

Akshay Kumar , Sakshi Thakur , Ranjeet Kaur , Penggang Wang

In this work, an advanced Mn-doped rGO/NiO/gCN based ternary nanocomposite for improved photocatalytic degradation of methylene blue (MB) was synthesized. The formation and interactions among the integrated composite were confirmed via FT-IR, PL, Raman XPS, and XRD analysis. The concurrent PL and EIS analysis of various composites confirmed lower charge transfer resistance (R_CT = 63.2 KΩ) and excellent 〈pi-pi〉 interactions among Mn-Doped rGO/NiO/gCN. In addition to this, PL analysis described the incorporation of Mn doped rGO/NiO in gCN, demonstrating a narrower spectrum with lower emission intensity resulting in the formation of a p−n heterojunction in Mn doped rGO/NiO/gCN, thereby enhancing exciton charge separation mobility and exhibiting a smaller band gap value in agreement with EIS and degradation analysis. Raman analysis determined more structural defects for Mn doped rGO/NiO/gCN which potentially enhances the material’s reactivity towards photodegradation. The well-defined crystallinity and structural morphology, efficient charge transfer phenomenon, and lower recombination rate in Mn-doped rGO/NiO/gCN heterostructure result in excellent degradation of ∼98.3% of 10 ppm MB solution in 90 min. with a rate constant 0.020 min^-1. Thus, exceptional electronic and structural attributes of Mn-doped rGO/NiO/gCN were collectively responsible for the superior photocatalytic activity and thus can be deployed for other environmental applications.

本文合成了一种先进的mn掺杂rGO/NiO/gCN基三元纳米复合材料，用于改进光催化降解亚甲基蓝（MB）。通过FT-IR， PL， Raman XPS和XRD分析证实了复合材料的形成和相互作用。各种复合材料的同步PL和EIS分析证实了mn掺杂的rGO/NiO/gCN具有较低的电荷转移电阻（RCT = 63.2 KΩ）和良好的< pi-pi >相互作用。除此之外，PL分析描述了Mn掺杂rGO/NiO在gCN中的掺入，显示出更窄的光谱和更低的发射强度，导致Mn掺杂rGO/NiO/gCN中形成p−n异质结，从而增强了激子电荷分离迁移率，并显示出更小的带隙值，与EIS和降解分析一致。拉曼分析发现Mn掺杂的rGO/NiO/gCN有更多的结构缺陷，这有可能增强材料的光降解反应性。mn掺杂的rGO/NiO/gCN异质结构具有良好的结晶度和结构形态、高效的电荷转移现象和较低的复合率，在90分钟内以0.020 min-1的速率降解10 ppm的MB溶液的98.3%。因此，mn掺杂rGO/NiO/gCN的特殊电子和结构属性共同导致了优越的光催化活性，因此可以用于其他环境应用。

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引用次数: 0

Interfacial reinforcement mechanisms in recycled concrete asphalt through accelerated carbonation and nanoparticle modification 加速碳化和纳米颗粒改性再生混凝土沥青界面增强机理研究

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-03-01 Epub Date: 2026-01-31 DOI: 10.1016/j.surfin.2026.108659

Wenhui Chen , Yujing Chen , Jiahao Zhang , Kui Hu , Yajun Lv , Jia Li , Tingyi Zhang

Incorporating recycled concrete aggregate (RCA) into asphalt mixtures offers significant potential for sustainable construction, yet residual cement mortar induces interfacial defects that accelerate water-salt deterioration in pavement service. This study combines nano-silica and accelerated carbonation to reinforce the RCA-asphalt interface against water and chloride-salt erosion. A multiscale experimental-MD approach quantifies their synergy and reveals the mechanism suppressing hydrated chloride-solution ingress. Under dry conditions, the interfacial bond strength increased from 1.14 to 2.53 MPa. After pure-water immersion, the bond strength increased by 51.55% and the stripping rate was reduced by 26.52% (absolute). Under chloride-salt erosion (1.5%–6%), bond-strength improvements rose from 52.42% to 80.05%, accompanied by average stripping-rate reductions of 30.20%–39.58%, with stronger suppression at higher concentrations. Microstructural evolution analysis confirmed NS-induced C–S–H gel formation and subsequent CaCO₃ deposition collectively densified the interfacial transition zone, reducing porosity. MD simulations further indicate suppressed chloride-solution penetration, with the effective diffusion coefficients of water and 6% chloride solution reduced by 35.5% and 29.3%, respectively, supporting the higher stability under chloride exposure (+28.5%). Overall, this work proposes a synergistic modification strategy that offers a viable pathway for improving the chloride-salt erosion resistance of recycled asphalt pavements in coastal and deicing salt-prevalent regions.

将再生混凝土骨料（RCA）加入沥青混合物中为可持续建筑提供了巨大的潜力，但残留的水泥砂浆会导致界面缺陷，加速路面服务中的水盐恶化。本研究结合纳米二氧化硅和加速碳化来增强rca -沥青界面抵御水和氯盐侵蚀。一种多尺度实验- md方法量化了它们的协同作用，揭示了抑制水合氯化物溶液进入的机制。在干燥条件下，界面结合强度由1.14 MPa提高到2.53 MPa。经纯水浸泡后，粘结强度提高了51.55%，剥离率（绝对）降低了26.52%。氯盐侵蚀（1.5% ~ 6%）下，粘结强度由52.42%提高到80.05%，平均剥脱率降低30.20% ~ 39.58%，且浓度越高，抑制作用越强。微观结构演化分析证实，ns诱导的C-S-H凝胶形成和随后的CaCO3沉积共同致密化了界面过渡区，降低了孔隙度。MD模拟进一步表明，氯溶液渗透受到抑制，水和6%氯溶液的有效扩散系数分别降低了35.5%和29.3%，支持氯暴露下更高的稳定性（+28.5%）。总的来说，这项工作提出了一种协同改性策略，为提高沿海和除冰盐流行地区再生沥青路面的抗氯盐侵蚀能力提供了可行的途径。

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引用次数: 0

Preparation of visible-infrared compatible stealth composite fabrics and all-weather multi-scenario military camouflage applications 可见光-红外兼容隐身复合织物的制备及全天候多场景军事伪装应用

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-03-01 Epub Date: 2026-01-28 DOI: 10.1016/j.surfin.2026.108621

Yanli Xiao , Bo Wang , Kunming Zhao , Yichen Wang , Haining Qian , Jingyi Guan , Lebin Wang , Xiangwei Wang

To address the urgent demand for multispectral compatible stealth materials in dynamic battlefield environments and focusing on the thermal radiation peak of ground-based targets in the 8-14 μm band, this study designed and fabricated a series of camouflage composite fabrics with bionic green and soil colors. These fabrics achieve effective compatible stealth in both the visible light and infrared (8-14 μm) bands, along with excellent flame-retardant performance. By incorporating infrared-reflective aluminum powder, multi-color pigments, and a resin matrix through a precise scraping-coating technique, a multifunctional layered structure with variable chromaticity and emissivity was constructed. This synergistic design allows the fabrics to match vegetation and soil chromaticity in the visible band and achieve multi-level emissivity regulation within a single color in the infrared band. Furthermore, the materials exhibit outstanding flame retardancy (self-extinguishing immediately after removal of the ignition source following 10 s of burning), moisture-heat resistance (stable performance at 60°C, 95% RH), and abrasion resistance (>20 friction cycles). The fabrics are also flexible, lightweight, foldable, and low-gloss. Leveraging their camouflage coloration, tunable emissivity, and double-sided structure, these fabrics can be rapidly flipped in mobile battlefield scenarios, enabling all-weather camouflage and fast switching between vegetation and desert environments.

针对战场动态环境下对多光谱兼容隐身材料的迫切需求，以8 ~ 14 μm波段地面目标热辐射峰值为研究对象，设计制造了一系列仿生绿土色复合伪装面料。这些织物在可见光和红外（8-14 μm）波段都实现了有效的兼容隐身，同时具有优异的阻燃性能。通过精密刮涂技术，将红外反射铝粉、多色颜料和树脂基体结合在一起，构建了具有可变色度和发射率的多功能层状结构。这种协同设计允许织物在可见光波段匹配植被和土壤的色度，并在红外波段实现单一颜色的多层次发射率调节。此外，该材料还具有出色的阻燃性（燃烧10秒后去除点火源后立即自熄）、防潮耐热性（在60°C， 95% RH下性能稳定）和耐磨性（20次摩擦循环）。这些面料也很柔软，重量轻，可折叠，低光泽。利用其伪装颜色、可调发射率和双面结构，这些织物可以在移动战场场景中快速翻转，实现全天候伪装，并在植被和沙漠环境之间快速切换。

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引用次数: 0

Thermomechanical properties of spiro-graphene nanosheets: NEMD study on geometry, temperature, defects, and layering effects 螺旋-石墨烯纳米片的热机械性能：几何、温度、缺陷和分层效应的NEMD研究

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-03-01 Epub Date: 2026-01-28 DOI: 10.1016/j.surfin.2026.108627

Ali Ghasemi

The thermomechanical properties of Spiro-graphene nanosheets (GNSs) are investigated using non-equilibrium molecular dynamic (NEMD) simulations, focusing on elastic modulus, ultimate stress, toughness, and thermal conductivity (TC). The effects of dimensions, layers, temperature, and vacancy defects are examined. Spiro-graphene's structural symmetry results in identical mechanical properties along armchair and zigzag directions, with stress-strain curves showing ductile fracture behavior. Size-dependent properties reveal a decrease in Young’s modulus and ultimate stress with increasing side length, converging to 456 GPa, attributed to reduced edge effects and increased stress concentrations. TC increases with side length, stabilizing at 12.45 W/mK due to reduced phonon boundary scattering. Increasing layers from 1 to 5 reduces Young’s modulus, converging to 474.6 GPa, and decreases TC to 6.66 W/mK due to enhanced interlayer phonon scattering and van der Waals interactions.

利用非平衡分子动力学（NEMD）模拟研究了螺杆石墨烯纳米片（GNSs）的热力学性能，重点研究了弹性模量、极限应力、韧性和导热系数（TC）。考察了尺寸、层数、温度和空位缺陷的影响。螺旋石墨烯的结构对称性导致其在扶手椅和之字形方向上具有相同的力学性能，应力-应变曲线表现出延性断裂行为。尺寸相关的特性表明，杨氏模量和极限应力随着边长的增加而降低，趋近于456 GPa，这是由于边缘效应的减少和应力集中的增加。温度随边长增加而增加，稳定在12.45 W/mK，这是由于声子边界散射的减少。由于层间声子散射和范德华相互作用增强，从1层增加到5层，杨氏模量降低到474.6 GPa， TC降低到6.66 W/mK。

引用次数: 0

High-strength cellulose acetate-Kraft lignin composite transparent film with excellent UV resistance and antioxidation properties 高强度醋酸纤维素-硫酸盐木质素复合透明膜，具有优异的抗紫外线和抗氧化性能

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2026-03-01 Epub Date: 2026-01-28 DOI: 10.1016/j.surfin.2026.108618

Mei-chan Li , Yong-sheng Fu , Qin Gao , Hui Jiang , Li-na Guo , Hui-fen Su , Jia-wei Ding , Sheng Chen , Xin Li , Jun Li , De-qiang Li , Zun-qi Liu , Muhammad Asif Javaid

The traditional polymer-induced risks have gradually come into public view. Polysaccharides and their derivatives have shown potential in replacing traditional polymers. However, polysaccharide-derived materials generally exhibit a single function, limiting their application. Here, cellulose acetate-based composite films were developed by integrating Kraft lignin (KL). The resultant films not only retain the UV resistance and antioxidation properties of lignin but also possess the exceptional swelling resistance, thermal stability, and mechanical performance of cellulose acetate (CA). The sample CAL₃ has shown high blocking properties of 95% and 100% at the UVA and UVB regions, respectively. In terms of mechanical performance, the CAL₃ has an elongation at break of 75%, tensile strength of 53 MPa, and Young's modulus of 70.7 MPa. After 240 h of UV irradiation, all composite films maintained stability in mechanical performance, transparency, and UV-blocking properties. Such versatile composites hold potential in various fields, including construction, daily protection, plastic packaging, agriculture, and beyond.

传统的聚合物引发的风险已逐渐进入公众视野。多糖及其衍生物已显示出取代传统聚合物的潜力。然而，多糖衍生材料通常表现出单一的功能，限制了它们的应用。本文以硫酸盐木质素（KL）为原料，制备了醋酸纤维素基复合膜。所得膜不仅保留了木质素的抗紫外线和抗氧化性能，而且还具有醋酸纤维素（CA）的优异的抗膨胀性、热稳定性和机械性能。样品CAL3在UVA和UVB区域分别表现出95%和100%的高阻隔性能。力学性能方面，CAL3的断裂伸长率为75%，抗拉强度为53 MPa，杨氏模量为70.7 MPa。经过240 h的UV照射后，复合膜的力学性能、透明度和防紫外线性能均保持稳定。这种多功能复合材料在建筑、日常防护、塑料包装、农业等各个领域都有潜力。

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