Advanced Composites and Hybrid Materials最新文献

{"title":"Bandgap-adjusted bismuth tungstate-titanium dioxide S-scheme heterojunctions: Optimizing interfacial electronic structure for rapid VOC mineralization","authors":"Qian Yin,&nbsp;Hubdar Ali Maitlo,&nbsp;Ki-Hyun Kim","doi":"10.1007/s42114-026-01932-2","DOIUrl":"10.1007/s42114-026-01932-2","url":null,"abstract":"<div><p>To strategically overcome the shortcomings of conventional photocatalysts, particularly inadequate redox potentials, a series of precisely engineered TiO₂-Bi₂WO₆ heterojunction photocatalysts, coded as TB-x (x represents the molar ratio% of Bi: Ti), has been designed and synthesized through deliberate bandgap adjustment. An optimal interfacial electronic structure, formed by coupling wide-bandgap TiO₂ (3.0–3.2 eV) with narrower-bandgap Bi₂WO₆ (2.6–2.9 eV), enables efficient charge dynamics under low-intensity UV irradiation (~ 1 W). The optimized TB-5 demonstrates complete removal of 5 ppm formaldehyde (FA: 100% X_FA) within 600 s, achieving a clean air delivery rate of 10.37 L min^-1 and apparent quantum yield of 2.68E-01%. The exceptional activity is supported by the formation of a robust S-scheme heterojunction, as confirmed both experimentally and theoretically via density functional theory calculations. This charge preservation mechanism is remarkably robust, converting 81.6% of FA (initial concentration: 100 ppm) into CO₂ within 2 h. In-situ DRIFTS analysis further suggests that FA oxidation proceeds sequentially through dioxymethylene and formate intermediates. This work thus establishes a foundational strategy for practical indoor air purification by integrating advanced S-scheme design with atomic-level mechanistic insight, charting a clear path from lab-scale discovery to real-world application.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"9 5","pages":""},"PeriodicalIF":15.5,"publicationDate":"2026-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-026-01932-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Driving S-scheme charge transfer via Fermi level disparity: efficient toluene mineralization over oxygen vacancy engineered Bi2WO6 coupled with TiO2","authors":"Baofei Hao,&nbsp;Sherif A. Younis,&nbsp;Younes Ahmadi,&nbsp;Ki-Hyun Kim","doi":"10.1007/s42114-026-01888-3","DOIUrl":"10.1007/s42114-026-01888-3","url":null,"abstract":"<div><p>Photocatalytic degradation is a sustainable strategy for the remediation of stable aromatic volatile organic compounds such as toluene. Yet, the energy-efficient mineralization of these pollutants under ambient conditions remains a critical bottleneck. Herein, an n–n S-scheme heterojunction photocatalyst is constructed via in situ hydrothermal coupling of TiO₂ with oxygen-vacancy-engineered Bi₂WO₆ (TB-x: x represents the TiO₂/Bi₂WO₆ molar ratio). A work function difference of 0.39 eV induces band bending and an internal electric field from Bi₂WO₆ to TiO₂, enabling an efficient S-scheme charge transfer pathway. Consequently, the optimized TB-2 exhibits a longer charge carrier lifetime (21.1 ps) than the pristine components. In a fixed-bed flow system, TB-2 achieves 97.2% degradation of 5 ppm toluene within 60 min under UV irradiation, delivering a high dynamic clean air delivery rate (1940 L h⁻¹ g⁻¹) and an apparent quantum yield of 0.1%, with high stability across reuse cycles and under varying humidity conditions. In situ DRIFTS, EPR, and DFT analyses reveal a stepwise oxidation pathway via benzyl alcohol and benzaldehyde intermediates, ultimately forming CO₂ and H₂O. This work highlights the critical role of interfacial band engineering in constructing an efficient air purification system based on direct mechanistic evidence for oxygen-vacancy-assisted S-scheme charge transfer in TiO₂/Bi₂WO₆ heterojunctions.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"9 5","pages":""},"PeriodicalIF":15.5,"publicationDate":"2026-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-026-01888-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interfacial engineering for enhanced heat transport: brazing femtosecond-laser-treated SiC to 3D-printed SiC-reinforced Ti6Al4V composites","authors":"Wendi Zhao,&nbsp;Xiaoqing Si,&nbsp;Pengpeng Xue,&nbsp;Jianwei Gao,&nbsp;Hao Jiang,&nbsp;Bo Yang,&nbsp;Chun Li,&nbsp;Yaotian Yan,&nbsp;Junlei Qi,&nbsp;Jian Cao","doi":"10.1007/s42114-026-01925-1","DOIUrl":"10.1007/s42114-026-01925-1","url":null,"abstract":"<div><p>With the growing demand for high-performance thermal management devices, achieving efficient and reliable joining between 3D-printed SiC-reinforced Ti6Al4V composite (3DP-SiC/TC4) and SiC ceramic presents a critical challenge. To enhance the interfacial thermal conductivity, femtosecond laser treatment (FLT) was applied to the SiC ceramic, aiming to construct a uniform striated microstructure. AgCuTi braze was employed to join 3DP-SiC/TC4 with femtosecond laser-treated SiC ceramic (FLT-SiC). The interfacial reaction mechanisms, microstructural evolution, and thermomechanical property optimization were systematically investigated. Based on a series-parallel thermal resistance model, it was revealed that the FLT significantly reduce interfacial thermal resistance by increasing the effective contact area and promoting metallurgical joining. The FLT influences the synergistic effect between geometric morphology and chemical joining. At 0.63 W, a positive synergy between geometric (gain factor <i>ξ</i>_geo = 1.083) and interfacial chemical (<i>κ</i>_chem = 1.087) contributions was achieved. The brazing temperature regulated the extent of interfacial reactions, with 850 ℃ yielding a dense microstructure and optimal properties. The optimal parameters were identified as a laser fluence of 0.63 J/cm² and a brazing condition of 850 ℃ for 10 min. Under these conditions, the joint exhibited a shear strength of 46.5 ± 2.4 MPa and a thermal conductivity of 24.6 W·m^-1·K^-1 at 600 ℃. This study provides a novel approach for joining dissimilar materials in thermal management applications, leading to a significant enhancement in the thermal and mechanical performance of the joint.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"9 5","pages":""},"PeriodicalIF":15.5,"publicationDate":"2026-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-026-01925-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Defect–interface engineering of machine learning-enhanced Au–VSe2–MXene nanoarchitectures with modulated electronic structure for trace antibiotic sensing","authors":"Ezhil Vilian,&nbsp;Sujina Tamang,&nbsp;Elangovan Sarathkumar,&nbsp;Ramapurath S. Jayasree,&nbsp;Yun Suk Huh,&nbsp;Young-Kyu Han","doi":"10.1007/s42114-026-01916-2","DOIUrl":"10.1007/s42114-026-01916-2","url":null,"abstract":"<div><p>Ensuring food safety requires engineered hybrid composites with hierarchical interfacial architectures for trace antibiotic detection in complex food and environmental matrices. Herein, we report an electrochemical sensing platform based on a gold nanoparticle (AuNP)-decorated VSe₂-MXene hybrid nanocomposite for on-site furazolidone (FZD) detection. The VSe₂-MXene scaffold was synthesized via a one-step hydrothermal route, followed by in situ anchoring of near-atomic-scale AuNPs through chemical reduction. This structural integration induces lattice compression, generating abundant electroactive sites and enhanced electron mobility for efficient charge transfer. Physicochemical characterization confirmed uniform AuNP anchoring on the VSe₂-MXene framework and the conversion of surface M–OH groups into M–O bonds, resulting in enhanced electron-transfer kinetics and selective FZD adsorption. Consequently, the Au-VSe₂-MXene sensor exhibited low charge-transfer resistance (~ 45 Ω) and an enhanced heterogeneous electron-transfer rate constant (1.68 × 10^− 2 cm s^− 1), enabling sensitive FZD detection at a low cathodic potential of -0.4 V (vs. Ag|AgCl). The fabricated sensor demonstrated a wide linear range (6-255 nM, R² = 0.9383), an ultralow detection limit (0.21 nM), high sensitivity (0.597 µA nM^− 1 cm^− 2), and excellent long-term stability (&gt; 30 days), enabling reliable trace-level FZD detection in real samples even in the presence of common interferents. Furthermore, machine learning-assisted analysis of amperometric i-t responses enabled accurate FZD quantification with reduced calibration error. Integration of the Random Forest model (R² = 0.9997) with IoT-based monitoring further highlights the potential of this platform for real-time diagnostic and environmental sensing applications. </p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"9 5","pages":""},"PeriodicalIF":15.5,"publicationDate":"2026-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-026-01916-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multifunctional load-bearing SWCNT/conjugated polymer composites via covalent interfacial engineering for structural energy materials","authors":"Yu Rim Kang,&nbsp;Dong Uk Woo,&nbsp;Min Seon Kim,&nbsp;Dongjae Lee,&nbsp;Taekyeong Kim,&nbsp;Sung Woo Hong,&nbsp;Taehoon Kim,&nbsp;Bong-Gi Kim","doi":"10.1007/s42114-026-01921-5","DOIUrl":"10.1007/s42114-026-01921-5","url":null,"abstract":"<div><p>The development of structural energy materials that simultaneously integrate mechanical robustness and energy storage capability remains a critical challenge for next-generation lightweight systems. Here, we report a multifunctional load-bearing composite platform based on single-walled carbon nanotubes (SWCNTs) and conjugated polymers (CPs), achieved via covalent interfacial engineering through azide-induced crosslinking. The CPs conformally wrap SWCNTs through strong π–π interactions, forming a homogeneous fibrous network, while subsequent crosslinking introduces robust interfacial bonding without disrupting the intrinsic electrical properties of SWCNTs. As a result, the optimized composite exhibits a high Young’s modulus of 24 GPa, tensile strength exceeding 220 MPa, and electrical conductivity of 688 S·cm⁻¹, demonstrating a rare combination of mechanical robustness and electrical performance. Importantly, the composite functions as a load-bearing energy storage material, maintaining stable electrochemical performance under mechanical deformation. The synergistic interplay between interfacial bonding, network connectivity, and charge transport is systematically elucidated through morphological, spectroscopic, and nanoscale electrical analyses. This work establishes a general strategy for designing multifunctional hybrid composites that bridge structural and energy functionalities, providing a promising platform for structural energy materials.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"9 5","pages":""},"PeriodicalIF":15.5,"publicationDate":"2026-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-026-01921-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature-dependent morphological and phase evolution at the MXene/SiOC interface","authors":"Mubina Shaik,&nbsp;Tim Pieshkov,&nbsp;Abhijit Biswas,&nbsp;Pulickel M. Ajayan,&nbsp;Kathy Lu","doi":"10.1007/s42114-026-01929-x","DOIUrl":"10.1007/s42114-026-01929-x","url":null,"abstract":"<div><p>Understanding the thermal stability of MXene/SiOC interface is critical for their use in high-temperature applications. In this work, we present a comprehensive in-situ transmission electron microscopy (TEM) study, coupled with thermogravimetric analysis (TGA), and X-ray diffraction (XRD), to investigate the morphological and chemical evolution of Ti₃C₂Tₓ MXene on polymer-derived SiOC ceramic, which was pre-pyrolyzed at 750 °C under argon and surface-treated with plasma. From room temperature (RT) to 1000 °C, the MXene layers near the SiOC interface began to collapse at ~ 700 °C, while the top layers persisted up to 800 °C. Loss of –F and –O terminations and diffusion of Ti, C, Si, and O atomic species toward the interface region occurred above 700 °C. TGA revealed an initial mass loss of about 5–6 wt% below 300 °C, followed by continued high-temperature degradation associated with surface termination loss and interfacial phase transformation. Intense rutile TiO₂ peaks emerge after 1000 °C with a transition from layered structures to aggregated bulk particles. These findings provide crucial insights into designing thermally stable MXene/SiOC interfaces.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"9 5","pages":""},"PeriodicalIF":15.5,"publicationDate":"2026-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-026-01929-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MXene-enabled induced-current regulation to amplify eddy-current loss in liquid metal composites for efficient microwave absorption","authors":"Baigang Han,&nbsp;Xin Wang,&nbsp;Mingjie Li,&nbsp;Yilong Wang,&nbsp;Xiujuan Wang,&nbsp;Zhaobo Wang,&nbsp;Xingrong Zhang,&nbsp;Meng Zhang,&nbsp;Jian Zhao","doi":"10.1007/s42114-026-01926-0","DOIUrl":"10.1007/s42114-026-01926-0","url":null,"abstract":"<div><p>Liquid metals (LMs) exhibit high electrical conductivity and can sustain strong eddy currents under alternating electromagnetic fields, endowing them with intrinsic potential for microwave absorption. However, excessive conductivity leads to severe skin effect, which confines induced currents to surface regions, suppresses volumetric interaction, and causes impedance mismatch, fundamentally limiting absorption efficiency. Herein, an interface-mediated discretization strategy (induced-current regulation) is proposed to regulate eddy-current behavior in liquid-metal-based absorbers. Gallium-based LM droplets were uniformly anchored onto Ti₃C₂Tₓ MXene nanosheets via silane-assisted coordination to form stable LM@MXene core–shell hybrids, which were assembled into oriented LM@MXene@PDMS composites by directional ice templating and vacuum-assisted infiltration. Guided by Faraday’s law of induction, direct LCR-based inductive measurements validated the eddy-current regulation, revealing enhanced eddy-current contributions associated with engineered current pathways. Subsequent electromagnetic analyses, including invariant eddy-current coefficients and negligible magnetic hysteresis, confirmed that the dominant attenuation stems from artificial magnetic loss driven by eddy currents rather than intrinsic magnetism. As a result, the optimized composite achieves a minimum reflection loss of -52.11 dB and an effective absorption bandwidth of 6.1 GHz at a thickness of 2.0 mm. This work establishes induced-current regulation as an effective paradigm for overcoming the skin-depth limitation in high-performance conductive microwave absorbers.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"9 5","pages":""},"PeriodicalIF":15.5,"publicationDate":"2026-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-026-01926-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Controllable separation of α-Fe phase from Nd2Fe17N3, dramatically broadening microwave absorption bandwidth at low frequency","authors":"Peng Wang,&nbsp;Jiaheng Wang,&nbsp;Yuyan Han,&nbsp;Haiqing Hang,&nbsp;Shibo Wang,&nbsp;Xingcheng Li,&nbsp;Hecheng Zhao,&nbsp;Keli Zhang,&nbsp;WenXiang Jin","doi":"10.1007/s42114-026-01913-5","DOIUrl":"10.1007/s42114-026-01913-5","url":null,"abstract":"<div><p>The low-frequency microwave absorption (MA) problem urgently needs to be addressed, although very challenging, to mitigate the electromagnetic interference (EMI) issues caused by modern communication systems and devices. In this paper, magnetic nano-composites of Nd₂Fe₁₇N₃/α-Fe with a controllable phase proportion, oxidized surface, high permeability, large magnetic loss, and low permittivity at the microwave frequency band, were prepared by controlling the purity of N₂ used for doping. As a result, strong MA below − 10 dB is achieved at the low frequency bands: C band and S band, when the absorber thickness is 2.8 mm and 5.0 mm, respectively, obviously better than the low-frequency microwave absorbers reported and thus shows great application prospects. More importantly, it is demonstrated that the design concept proposed by us is feasible, that is, a combination of easy-plane anisotropic materials like the Nd₂Fe₁₇N₃ and axis anisotropic materials like the α-Fe, capable of helping broaden the MA bandwidth significantly. Additionally, a particular magnetic loss mechanism on moments from one side to the other side of heterogeneous interfaces of two-phase magnetic nano-composites is proposed and discussed. In short, this paper has presented a novel method of experiment and some unique ideas of design, practical for solving the low-frequency MA problem.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"9 5","pages":""},"PeriodicalIF":15.5,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-026-01913-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tin-plated sulfur composite cathodes enabled by solid-state sulfide electrolyte for durable high-rate all-solid-state lithium–sulfur cells","authors":"Shih-Lun Yang,&nbsp;Chih-Long Tsai,&nbsp;Rüdiger-A. Eichel,&nbsp;Sheng-Heng Chung","doi":"10.1007/s42114-026-01931-3","DOIUrl":"10.1007/s42114-026-01931-3","url":null,"abstract":"<div><p>An all-solid-state lithium–sulfur cell employing a lithium phosphorus sulfur chloride (Li₆PS₅Cl) solid-state electrolyte and electroless-tin-plated sulfur solid-state composite cathodes is demonstrated as a viable architecture for next-generation energy-storage systems. To investigate the role of tin-plating layer, tin-plated sulfur cathodes with systematically varied tin contents are synthesized and evaluated. Owing to the optimized electronic conduction network and enhanced sulfur redox kinetics, the tin-plated sulfur 25 (tin-plated sulfur composites containing 25 wt% tin) cathode exhibits improved rate performance, delivering high discharge capacities of 1502, 1247, 1046, and 620 mA h g^–1 at C/10, C/2, 1 C, and 2 C rates, respectively. During long-term cycling at a C/2 rate, the all-solid-state cell with tin-plated sulfur 25 cathode achieves a high initial capacity of 1226 mA h g^–1 and retains 80% of its capacity after 1000 cycles, indicating excellent cyclability. Moreover, stable operation is further maintained over 10,000 cycles at high 1 C rate with a discharge/charge efficiency approaching 100%. Even under high sulfur loading, the tin-plated sulfur 25 cathode sustains an areal capacity of 4 mA h cm^–2. The enhanced electrochemical performance originates from the dual functionality of tin plating, which establishes continuous electron-transport pathways while simultaneously facilitating solid–solid sulfur redox reactions, in combination with the high ionic conductivity and interfacial compatibility of the Li₆PS₅Cl electrolyte. These results highlight the effectiveness of hybrid metal–sulfur composite cathodes integrated with sulfide solid electrolytes, providing a promising pathway toward safe, high-energy-density all-solid-state lithium–sulfur batteries.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>Electroless-tin-plated sulfur cathodes with Li6PS5Cl solid-state electrolyte enable durable, high-rate all-solid-state lithium–sulfur cells through enhanced conductivity, interfacial stability, and accelerated solid–solid sulfur conversion</p></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"9 5","pages":""},"PeriodicalIF":15.5,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-026-01931-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced fracture behavior of aluminum joints with multi-walled carbon nanotube and polyvinyl alcohol nanofiber reinforced epoxy adhesives","authors":"Mürsel Ekrem,&nbsp;Yasin Uslugil,&nbsp;Ahmet Avcı","doi":"10.1007/s42114-026-01928-y","DOIUrl":"10.1007/s42114-026-01928-y","url":null,"abstract":"<p>The objective of this study is to investigate and compare two different reinforcement routes for epoxy-bonded AA2024-T3 aluminum joints: direct incorporation of multi-walled carbon nanotubes (MWCNTs) into the epoxy matrix and interleaf-based reinforcement using electrospun PVA/MWCNT nanofiber mats. The novelty lies in the direct comparison of these two approaches within the same bonded-joint framework under both shear and Mode I fracture loading conditions. Neat epoxy was used as the reference, while an epoxy with 1 wt.% MWCNT represented the direct nanotube-reinforced system. In the interleaved configurations, the epoxy matrix remained MWCNT-free and the reinforcement was provided solely by PVA nanofiber mats with or without 1–5 wt.% MWCNT. Electrospun nanofiber mats with an average thickness of approximately 0.13 mm were obtained, and the nanofiber diameters decreased from 222–403 nm to 95–192 nm with the addition of MWCNTs to the PVA solution. In single-lap shear tests, the maximum load value was 7804 N for neat epoxy, increased to 8824 N for the epoxy system containing 1 wt.% MWCNT, and reached 9437 N for the joints using a PVA nanofiber mat containing 1 wt.% MWCNT. Joint toughness increased from approximately 1204 kJ/m<span>(^3)</span> to 1954 kJ/m<span>(^3)</span> for the hybrid system with 3 wt.% MWCNT, but decreased at higher MWCNT contents, which may be associated with less uniform dispersion and local defect formation. In double cantilever beam tests, the EPCNT1 sample exhibited an average <span>(G_{Ic})</span> increase of about 231% relative to neat epoxy.</p>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"9 5","pages":""},"PeriodicalIF":15.5,"publicationDate":"2026-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-026-01928-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}