IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-04 DOI: 10.1016/j.carbon.2025.121129

Lingjun Zeng , Yu Zhang , Lan Xie , Bai Xue , Qiang Zheng

High-efficient absorption-dominant electromagnetic interference (EMI) shielding materials with both ultra-high total EMI shielding effectiveness (SE_T > 100 dB) and absorption coefficient (A>0.95) as ideal “green” shielding materials are imminently demanded yet scarcely reported for minimizing secondary EMI radiation pollution. Herein, pyrolytic carbon nanotube (CNT)@FeCo/CNT/silver-coated tetra-needle-like zinc oxide whisker/poly (l-lactic acid) (CNT@FeCo-700/CNT/T-ZnO@Ag/PLA) composite foams were successfully fabricated based on a conductivity-gradient modular design. The rational layout of the gradient conductive network structures of CNT@FeCo-700/PLA, CNT/PLA, and T-ZnO@Ag/PLA layers enables the “strong absorption-weak absorption-reflection-reabsorption” shielding mechanism. The optimized foam features an ultra-high average EMI SE_T of 104.02 dB, including an absorption SE (SE_A) of 103.95 dB and a reflection SE (SE_R) of only 0.07 dB. Notably, its average absorption coefficient (A) reaches 0.984 (the maximum value of 0.998), surpassing most of the EMI shielding composites reported to date. By learning the experimental datasets of EMI SE_T and A at different frequency, Fully Connected Neural Networks (FCNN) exhibits excellent prediction accuracy on unseen samples, with average Root Mean Square Error (RMSE) values of only 1.251 and 0.014 for EMI SE_T and A, and average errors of less than 2.82 % and 1.52 % for EMI SE_T and A, respectively, suggesting that it is highly applicable for this work and can effectively reduce the experimental costs. This work offers an innovative strategy for fabricating high-efficient absorption-dominant EMI shielding materials and reduce experimental consumption.

作为理想的“绿色”屏蔽材料，具有超高的电磁干扰总屏蔽效率（SET > 100 dB）和吸收系数（A>0.95）的高效吸收型电磁干扰屏蔽材料是迫切需要的，但很少报道，以减少二次EMI辐射污染。本文基于电导率梯度模块化设计，成功制备了热解碳纳米管（CNT）@FeCo/CNT/镀银四针状氧化锌晶须/聚乳酸（CNT@FeCo-700/CNT/T-ZnO@Ag/PLA）复合泡沫。通过对CNT@FeCo-700/PLA、CNT/PLA和T-ZnO@Ag/PLA层梯度导电网络结构的合理布局，实现了“强吸-弱吸-反射-重吸”的屏蔽机制。优化后的泡沫具有104.02 dB的超高平均EMI SET，其中吸收SE （SEA）为103.95 dB，反射SE （SER）仅为0.07 dB。值得注意的是，其平均吸收系数(A)达到0.984（最大值0.998），超过了目前报道的大多数电磁干扰屏蔽复合材料。通过学习不同频率的EMI SET和A实验数据集，全连接神经网络（Fully Connected Neural Networks， FCNN）在未见样本上表现出优异的预测精度，EMI SET和A的平均均方根误差（RMSE）分别为1.251和0.014，EMI SET和A的平均误差分别小于2.82%和1.52%，表明该方法非常适用于本工作，可以有效降低实验成本。这项工作为制造高效吸收型电磁干扰屏蔽材料和降低实验消耗提供了一种创新策略。

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引用次数: 0

Robust and superhydrophobic fabric with polymeric MXene/FeSiAl-wrapped Ag yarns for broadband electromagnetic absorption 坚固和超疏水织物与聚合物MXene/ fesal包裹Ag纱线宽带电磁吸收

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-04 DOI: 10.1016/j.carbon.2025.121130

Ruobing Cao, Xiaoning Zhao, Yiman Lu, Ya Lin, Zhongqiang Wang, Ye Tao, Haiyang Xu, Yichun Liu

The design of electromagnetic absorbing fabric is generating growing interest in wearable electronics. This work develops a robust and superhydrophobic fabric with polymeric MXene/FeSiAl (MFSA)-wrapped Ag yarns through grafting and electrospinning. Such a distinctive geometric structure of the yarns facilitates multiple electromagnetic wave attenuation, endowing the fabric with good microwave absorption (MA) performance. The fabric exhibits the minimum reflection loss of −52.52 dB at 2 mm thickness and effective absorption bandwidth of 6.13 GHz at 2.65 mm thickness with low MFSA loading (5 wt%). In addition, the fabric also exhibits good mechanical stability and self-cleaning ability under repeated stretching or washing. This work provides a MA fabric material for potential wearable electronics and stealth applications.

电磁吸收织物的设计引起了人们对可穿戴电子产品越来越大的兴趣。本研究通过接枝和静电纺丝的方法，开发了一种由MXene/ fesal （MFSA）包裹的Ag纱线制成的坚固的超疏水织物。这种独特的纱线几何结构有利于多重电磁波的衰减，使织物具有良好的微波吸收性能。在低MFSA载荷（5 wt%）下，该织物在2 mm厚度时的反射损耗最小为- 52.52 dB，在2.65 mm厚度时的有效吸收带宽为6.13 GHz。此外，织物在反复拉伸或洗涤下也表现出良好的机械稳定性和自清洁能力。这项工作为潜在的可穿戴电子产品和隐形应用提供了一种MA织物材料。

引用次数: 0

Environmentally-friendly CoxNiy/carbon hybrid aerogels with dielectric and magnetic coupling network for highly efficient radar/infrared compatibility 环保的CoxNiy/碳混合气凝胶，具有电介质和磁耦合网络，具有高效的雷达/红外兼容性

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-03 DOI: 10.1016/j.carbon.2025.121126

Weihua Gu , Xin Tan , Zhentao Luo , Ziming Chen , Chuancheng Sun , Ailin Xia

With the rapid development of multi-frequency electromagnetic detection technology, developing microwave absorbing materials compatible with infrared stealth has become a key research focus. This paper details the fabrication of cobalt-nickel salts/chitosan derived 3D porous Co_xNi_y/carbon aerogels (CA-Co_xNi_y), achieved via freeze-drying and high-temperature calcination. The superb radar stealth performance exhibits the minimum reflection loss (RL_min) of −62.09 dB within the C-band and the maximum effective absorption bandwidth of 4.05 GHz at only 1.65 mm. This excellent property can be ascribed to the 0D magnetic particles loaded on 3D porous continuous skeletons with abundant interfaces, which can promote multiple internal reflections, conduction loss, interfacial polarization, and impedance matching. Through computer simulation technology, the radar cross section under different electromagnetic wave incidence directions is studied, and the interaction law between electric field distribution, power loss density and electromagnetic wave energy loss is also analyzed. Furthermore, CA-Co₅Ni₅ showcases low infrared emissivity, measuring merely 0.785 in the 3–5 μm band and 0.729 in the 8–14 μm band, significantly reducing thermal radiation and enhancing thermal insulation capability. This investigation offers a valuable new perspective for the development of high-performance materials that are compatible with microwave absorption and infrared stealth, which are vital for aerospace and military protection applications.

随着多频电磁探测技术的迅速发展，开发兼容红外隐身的吸波材料已成为研究热点。本文详细介绍了通过冷冻干燥和高温煅烧制备钴镍盐/壳聚糖衍生的三维多孔CoxNiy/碳气凝胶（CA-CoxNiy）。c波段的最小反射损耗（RLmin）为- 62.09 dB，在1.65 mm处的最大有效吸收带宽为4.05 GHz，具有优异的雷达隐身性能。这种优异的性能可以归因于0D磁颗粒加载在具有丰富界面的三维多孔连续骨架上，可以促进多次内反射、传导损耗、界面极化和阻抗匹配。通过计算机仿真技术，研究了不同电磁波入射方向下的雷达截面，分析了电场分布、功率损耗密度与电磁波能量损耗之间的相互作用规律。此外，CA-Co5Ni5具有较低的红外发射率，在3-5 μm波段仅为0.785，在8-14 μm波段仅为0.729，显著降低了热辐射，增强了隔热能力。这项研究为开发兼容微波吸收和红外隐身的高性能材料提供了一个有价值的新视角，这对航空航天和军事防护应用至关重要。

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引用次数: 0

Electrochemically synthesized MXenes as sustainable solid lubricants: Mechanistic insights into tribofilm formation and interfacial dynamics 电化学合成MXenes作为可持续固体润滑剂：摩擦膜形成和界面动力学的机理见解

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-03 DOI: 10.1016/j.carbon.2025.121136

Marko Piljević , Markus Ostermann , Edoardo Marquis , Sabine Schwarz , Michael Stöger-Pollach , Oleksiy Gogotsi , Markus Valtiner , Manel Rodríguez Ripoll , Carsten Gachot , Pierluigi Bilotto

The development of sustainable solid lubricants is critical for reducing energy losses and material wear in advanced mechanical systems. Two-dimensional materials such as MXenes are attractive for solid lubrication due to their weak interlayer bonding, enabling low-friction sliding. However, conventional MXene synthesis relies on hazardous chemicals like hydrofluoric acid, raising environmental and safety concerns that limit scalability.

Here, we report the first use of bubble-assisted electrochemically synthesized MXenes (EC-MXene) as environmentally friendly solid lubricants. EC-MXene exhibit oxygen-rich surface terminations and significantly reduced fluorine content compared to traditional MXenes. When coated on AISI 52100 steel and tested against Si₃N₄, Al₂O₃, and steel counterbodies, EC-MXene deliver excellent tribological performance, particularly against Si₃N₄, achieving a low and stable coefficient of friction (COF

<

0.25).

Surface analyses using SEM-EDS, Raman spectroscopy, TEM (SAED and EELS), and low-energy ion scattering (LEIS) reveal a robust tribofilm and dynamic replenishment mechanism that sustains lubrication by redistributing MXene flakes from pile-up zones to the sliding interface. Density Functional Theory (DFT) calculations confirm strong interfacial adhesion of EC-MXene to ceramic surfaces, supporting the observed tribological behavior. Load-dependent studies further highlight the role of adhesion and tribofilm ordering in maintaining performance.

These findings position EC-MXene as a sustainable alternative to classical MXenes, combining comparable tribological properties with safer synthesis routes. Their characteristics establish EC-MXene as a benchmark for sustainable two-dimensional solid lubricants with broad potential in advanced mechanical and biotribological applications.

可持续固体润滑剂的开发对于减少先进机械系统的能量损失和材料磨损至关重要。二维材料，如MXenes，由于其层间键合较弱，可以实现低摩擦滑动，因此对固体润滑很有吸引力。然而，传统的MXene合成依赖于氢氟酸等危险化学品，这引起了环境和安全问题，限制了可扩展性。在这里，我们报道了首次使用气泡辅助电化学合成的MXenes （EC-MXene）作为环保固体润滑剂。与传统的mxene相比，EC-MXene表现出富氧的表面末端和显著降低的氟含量。当将EC-MXene涂覆在AISI 52100钢上，并对Si3N4、Al2O3和钢基体进行测试时，EC-MXene具有优异的摩擦学性能，特别是对Si3N4，实现了低而稳定的摩擦系数（COF < 0.25）。利用SEM-EDS、拉曼光谱、TEM （SAED和EELS）和低能离子散射（LEIS）进行的表面分析揭示了一个强大的摩擦膜和动态补充机制，通过将MXene薄片从堆积区重新分配到滑动界面来维持润滑。密度泛函理论（DFT）计算证实了EC-MXene与陶瓷表面的强界面附着力，支持观察到的摩擦学行为。负载相关的研究进一步强调了粘附和摩擦膜有序在维持性能中的作用。这些发现将EC-MXene定位为经典mxene的可持续替代品，结合了类似的摩擦学性能和更安全的合成路线。它们的特性使EC-MXene成为可持续发展的二维固体润滑剂的基准，在先进的机械和生物摩擦学应用中具有广阔的潜力。

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引用次数: 0

Atomic-scale insights into orientational ordering and electronic coupling in C60/MoS2 heterostructures C60/MoS2异质结构中取向有序和电子耦合的原子尺度研究

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-02 DOI: 10.1016/j.carbon.2025.121116

Yifan Qin , Jilian Xu , Zhilong Cao , Yang Bao , Zhewen Liang , Jiaxu Yan , Pengtao Jing , Da Zhan , Lei Liu , Dezhen Shen , Hai Xu

C₆₀-based hybrid heterostructures with 2D materials such as MoS₂ offer promising optoelectronic properties, but their performance is strongly influenced by molecular orientation at the interface. While theoretical studies suggest a preferred hexagonal alignment of C₆₀ on MoS₂ and favorable charge transfer, experimental evidence remains limited. Here, we use atomic resolved Scanning Tunneling Microscopy/Spectroscopy (STM/STS) technique to investigate C₆₀ on monolayer MoS₂. Our results reveal a periodic superstructure with heptamer formations and distinct orbital delocalization within central molecules. These findings highlight the critical role of interfacial ordering in tuning electronic coupling, providing insight for the design of high-performance organic–inorganic devices.

基于c60的杂化异质结构与二维材料（如MoS2）具有良好的光电性能，但其性能受到界面上分子取向的强烈影响。虽然理论研究表明C60在二硫化钼上的首选六边形排列和有利的电荷转移，但实验证据仍然有限。在这里，我们使用原子分辨扫描隧道显微镜/光谱（STM/STS）技术研究了单层二硫化钼上的C60。我们的结果揭示了具有七聚体形成和中心分子内明显的轨道离域的周期性上层结构。这些发现强调了界面有序在调谐电子耦合中的关键作用，为高性能有机-无机器件的设计提供了见解。

引用次数: 0

Enhanced tribological performance of environmentally friendly lubricants with CS/ZnO composite nanoparticles additives CS/ZnO复合纳米颗粒添加剂增强环保型润滑油的摩擦学性能

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-02 DOI: 10.1016/j.carbon.2025.121124

Ying Xia , Peng Cheng , Jie Fei , Wenshan Wang , Jifeng Yan , Zimu Hu , Lehua Qi

In mechanical systems, friction and wear are ubiquitous phenomena that not only cause energy loss but also serve as key factors in mechanical failures. However, commonly used lubricant additives generally suffer from issues such as insufficient stability and susceptibility to oxidation. This study developed a co-precipitation method to grow zinc oxide nanoparticles on the surface of carbon spheres in situ, thereby preparing carbon sphere/zinc oxide (CS/ZnO) composite materials. The prepared CS/ZnO composite nanoparticles were used as a novel lubricant additive, significantly improving the anti-friction and anti-wear properties of the reference oil. When 0.5 wt% CS/ZnO was added, the lubricant demonstrated a significant reduction in the friction coefficient and wear rate by 38.4 % and 45.5 %, respectively, compared to the Ref-oil under a load of 100 N. The excellent friction performance is attributed to the friction film formed on the friction surface through mechanical deposition and friction chemical reactions during the friction process, as well as the filling, repair, rolling bearing, and polishing effects of CS/ZnO.

在机械系统中，摩擦和磨损是普遍存在的现象，不仅造成能量损失，而且是机械故障的关键因素。然而，常用的润滑油添加剂普遍存在稳定性不足和易氧化等问题。本研究采用共沉淀法在碳球表面原位生长氧化锌纳米颗粒，从而制备碳球/氧化锌（CS/ZnO）复合材料。将制备的CS/ZnO复合纳米颗粒用作新型润滑油添加剂，显著提高了基准油的抗摩擦和抗磨性能。当CS/ZnO的添加量为0.5 wt%时，在100 n的载荷下，摩擦系数和磨损率分别比Ref-oil降低38.4%和45.5%。优异的摩擦性能归功于摩擦过程中通过机械沉积和摩擦化学反应在摩擦表面形成的摩擦膜，以及CS/ZnO的填充、修复、滚动轴承和抛光作用。

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引用次数: 0

Experimental study on the friction removal mechanism between single crystal diamond and quartz glass 单晶金刚石与石英玻璃摩擦去除机理的实验研究

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-01 DOI: 10.1016/j.carbon.2025.121112

Mingpu Xue , Hui Huang , Min Wu , Nian Duan , Xipeng Xu

Single-crystal diamond (SCD), owing to its outstanding physical and electrical properties, holds great promise for applications in thermal management and semiconductor technologies. Research indicates that significant wear occurs when SCD friction against quartz glass, severely impacting its performance as a device material. However, the underlying wear mechanism remains unclear. In this study, frictional sliding experiments between SCD and quartz glass were conducted to elucidate this phenomenon. The material removal rate (MRR) of SCD was quantitatively evaluated, accompanied by detailed surface and subsurface characterizations. The generated wear debris was analyzed, and triboluminescence at the sliding interface was detected using direct-reading spectroscopy. The results reveal that, under the experimental conditions, SCD undergoes significant wear, with the MRR reaching 214.9 nm/min. After friction, a distinct subsurface amorphous carbon layer with a thickness of approximately 20–30 nm was observed beneath the diamond surface. Graphitization of diamond was detected in the wear debris. These findings demonstrate that diamond wear is predominantly governed by the transformation of sp³ carbon to sp² carbon, followed by removal in the form of graphite. Moreover, discharge phenomena were detected at the frictional interface, which may facilitate the amorphization process. Based on these findings, a new material removal model for SCD is proposed. This study not only provides new insights into the wear mechanisms of diamond and quartz glass but also may develop a simple and effective new method for diamond processing.

单晶金刚石（SCD）由于其优异的物理和电学性能，在热管理和半导体技术方面具有很大的应用前景。研究表明，当SCD与石英玻璃摩擦时，会产生明显的磨损，严重影响其作为器件材料的性能。然而，潜在的磨损机制仍不清楚。本研究通过SCD与石英玻璃之间的摩擦滑动实验来阐明这一现象。定量评价了SCD的材料去除率（MRR），并进行了详细的表面和亚表面表征。对产生的磨损碎片进行了分析，并利用直读光谱检测了滑动界面处的摩擦发光。结果表明，在实验条件下，SCD磨损明显，MRR达到214.9 nm/min。摩擦后，在金刚石表面下观察到一层明显的亚表面非晶碳层，厚度约为20-30 nm。在磨损碎屑中检测到金刚石的石墨化。这些发现表明，金刚石磨损主要是由sp3碳转变为sp2碳，然后以石墨的形式去除。此外，在摩擦界面处检测到放电现象，这可能促进了非晶化过程。在此基础上，提出了一种新的SCD材料去除模型。该研究不仅为金刚石和石英玻璃的磨损机理提供了新的认识，而且可能为金刚石加工提供一种简单有效的新方法。

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引用次数: 0

Defect-controlled hydrogenated tetrahedral amorphous carbon with enhanced corrosion and wear resistance in NH4OH dilute environment 缺陷控制的氢化四面体非晶碳在NH4OH稀环境中具有增强的耐腐蚀和耐磨性

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-01 DOI: 10.1016/j.carbon.2025.121114

Jae-Il Kim , Duyoung Kwon , Ji-Woong Jang , Sungmo Moon , Jongkuk Kim , Young-Jun Jang

This study focused on the defect control in hydrogenated tetrahedral amorphous carbon (ta-C:H) deposited via the filtered cathodic vacuum arc, and investigated the corrosion behavior of ta-C:H coatings with improved surface quality under an NH₄OH dilute solution. A pulsed-DC substrate bias was applied for defect control, and the surface quality was evaluated as a function of bias frequency and waveform. In addition, the wear behaviors of ta-C:H coatings were systematically investigated in ambient air, deionized water, and NH₄OH suspension environments. As a result, ta-C:H coatings with high electrical resistance and reduced defect density significantly enhanced the corrosion and wear resistance in corrosive environments. The optimized ta-C:H coating exhibited a ∼78 % reduction in corrosion current density and a ∼55 % decrease in wear rate compared to ta-C coating under NH₄OH solution. The optimized characteristics of ta-C:H coatings in this study can contribute to the improvement of the corrosion and wear resistance required for key components of ammonia-propelled ships, and are expected to provide a pathway toward reliable carbon coatings for ammonia-fueled marine engines.

研究了过滤阴极真空电弧沉积氢化四面体非晶碳（ta-C:H）的缺陷控制，并研究了表面质量得到改善的ta-C:H涂层在NH4OH稀释溶液中的腐蚀行为。采用脉冲直流衬底偏压进行缺陷控制，并将表面质量作为偏压频率和波形的函数进行评估。此外，系统地研究了ta-C:H涂层在环境空气、去离子水和NH4OH悬浮环境中的磨损行为。结果表明，具有较高电阻和较低缺陷密度的ta-C:H涂层在腐蚀性环境中的耐蚀性和耐磨性显著增强。优化后的ta-C:H涂层与在NH4OH溶液下的ta-C涂层相比，腐蚀电流密度降低了~ 78%，磨损率降低了~ 55%。本研究中优化的ta-C:H涂层的特性有助于改善氨推进船舶关键部件所需的耐腐蚀和耐磨性，并有望为氨燃料船用发动机提供可靠的碳涂层。

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引用次数: 0

Polysilazane-impregnated carbon aerogel/carbon fiber composites with dual-functional thermal protection mechanism for extreme thermal environments 具有双功能热防护机制的聚硅氮烷-浸渍碳气凝胶/碳纤维复合材料

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-01 DOI: 10.1016/j.carbon.2025.121111

Liang Li , Hongxiang Cai , Jiaxin Yao , Peiqi Yang , Zhe Su , Yi Luo , Xiubing Liang , Xiaojing Wang , Bo Niu , Donghui Long

Ablative thermal protection systems are indispensable in the aerospace industry, yet limited oxidative resistance and high linear ablation rate restrict their application in extreme thermal environments. Herein, we develop a polysilazane (PSZ)-impregnated carbon aerogel/carbon fiber (CAC) composite (CAC-PSZ) with a dual-functional thermal protection mechanism, combining ablation-driven energy dissipation and in-situ ceramic shielding. During heating, PSZ decomposes to dissipate heat and simultaneously generates an antioxidant silica layer that radiates thermal energy while suppressing oxidation and material recession. The CAC ensures uniform infiltration of PSZ, enhances oxidation tolerance relative to pure carbon fiber, and improves mechanical robustness of the composite. Under identical heat-flux conditions, the CAC-PSZ surface is initially cooler than CAC, with the temperature difference reaching a maximum of 310 °C, reflecting the combined ablation and heat-sink effects of the PSZ and aerogel matrix. A continuous molten-silica barrier about 290 μm thick forms on the surface under durable thermal-exposure, effectively preventing sustained erosion. The composite achieves near-zero surface recession at roughly 1630 °C for 300 s and a slight ablation rate of only 0.9 μm s⁻¹ at about 2070 °C. This work validates the effectiveness of the dual-function thermal protection strategy and offers a promising material candidate for extreme thermal environments.

烧蚀热防护系统在航空航天工业中是必不可少的，但有限的抗氧化性和高线性烧蚀率限制了其在极端热环境中的应用。在此，我们开发了一种具有双功能热保护机制的聚硅氮烷(PSZ)-浸渍碳气凝胶/碳纤维（CAC）复合材料（CAC-PSZ），结合了烧蚀驱动的能量耗散和原位陶瓷屏蔽。在加热过程中，PSZ分解散热，同时产生抗氧化二氧化硅层，在抑制氧化和材料衰退的同时辐射热能。CAC确保了PSZ的均匀浸润，相对于纯碳纤维增强了抗氧化性，提高了复合材料的机械坚固性。在相同热流密度条件下，CAC-PSZ表面初始温度较CAC低，温差最大可达310℃，反映了PSZ和气凝胶基质的烧蚀和吸热作用。在持久的热暴露下，表面形成约290 μm厚的连续熔融硅屏障，有效地防止了持续的侵蚀。该复合材料在约1630°C温度下达到近零表面衰退，持续时间为300 s，在约2070°C温度下的烧蚀率仅为0.9 μ s−1。这项工作验证了双功能热保护策略的有效性，并为极端热环境提供了一种有前途的候选材料。

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引用次数: 0

Enhancing antibody capture with edge-carboxyl-enriched, low-defect monolayer graphene oxide via controlled graphite oxidation 通过控制石墨氧化，增强边缘富含羧基的低缺陷单层氧化石墨烯的抗体捕获

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon

Pub Date : 2025-12-01 DOI: 10.1016/j.carbon.2025.121115

Masud, Jaeyoon Song, Sehyeon Kim, Jinsik Kim

Herein, a controlled oxidation method for producing large-scale graphene oxide (GO) with enhanced carboxyl-edge functionality and controlled oxygen-containing groups on the basal plane is reported using commercially available, low-cost graphite flakes. The synthesized carboxyl-rich GO flake was confirmed to be a monolayer, with a thickness of approximately 1.1 nm, indicating successful exfoliation into a 2D form. Hydriodic acid (HI) vapor was used for reduction, which largely restores the sp² graphitic structure in the basal plane while preserving the edge carboxyl groups. The average flake size of the synthesized GO was around 1 μm, suitable for providing a high density of carboxyl-edge functionalities in the resulting reduced graphene oxide (rGO) films with a thickness of 6–10 nm. Due to the enhanced carboxyl-edge functionality, the presence of carboxyl-edge-related defects, and uniform flake size distribution, antibodies were effectively immobilized on the rGO sensing layer through covalent bonding by activating the carboxyl groups, resulting in excellent antibody density and high resistance changes with outstanding uniformity in the electrical sensing devices. These results pave the way for the development of low-cost, rGO-based electrical sensors utilizing this tailor-made carboxyl-rich graphene oxide for the detection of various biomarkers in disease monitoring.

本文报道了一种控制氧化方法，用于生产具有增强羧基边缘功能和控制基面上含氧基团的大规模氧化石墨烯（GO），使用市售的低成本石墨薄片。合成的富含羧基的氧化石墨烯薄片被证实为单层，厚度约为1.1 nm，表明成功剥离成二维形式。采用氢氧酸（HI）蒸汽还原，基本恢复了基面sp2石墨结构，同时保留了边缘羧基。合成的氧化石墨烯平均薄片尺寸约为1 μm，适合在厚度为6-10 nm的还原氧化石墨烯（rGO）薄膜中提供高密度的羧基边缘官能团。由于增强的羧基边缘功能，羧基边缘缺陷的存在，以及均匀的鳞片尺寸分布，抗体通过激活羧基通过共价键有效地固定在氧化石墨烯传感层上，从而获得优异的抗体密度和高电阻变化，并且在电传感器件中具有出色的均匀性。这些结果为开发低成本、基于rgo的电子传感器铺平了道路，利用这种定制的富含羧基的氧化石墨烯来检测疾病监测中的各种生物标志物。

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引用次数: 0

Carbon最新文献