Journal of Materials Science & Technology最新文献

{"title":"Ce/La-induced formation of Al2RE/Al2Ca composite phases and enhancement of mechanical properties and ignition resistance in Mg-Al-Mn-Ca alloy","authors":"Xuerui Jing, Fanglei Wang, Lianjuan Tian, Guangjin Hou, Jia She, Aitao Tang, Fusheng Pan","doi":"10.1016/j.jmst.2026.09.017","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.09.017","url":null,"abstract":"Mg-Al-Mn-Ca (AMX) alloys are promising candidates for next-generation lightweight structural materials owing to their attractive combination of mechanical properties and ignition resistance. In this study, the effects of Ce/La co-addition on the second-phase evolution, mechanical properties, and ignition resistance of an AMX402 alloy were systematically investigated. The results show that Ce/La co-addition induces the formation of micron-scale Al<ce:inf loc=\"post\">2</ce:inf> rare earth (RE)/Al<ce:inf loc=\"post\">2</ce:inf>Ca composite phases, which is governed by preferential Al<ce:inf loc=\"post\">2</ce:inf>RE precipitation, low lattice mismatch between Al<ce:inf loc=\"post\">2</ce:inf>RE and Al<ce:inf loc=\"post\">2</ce:inf>Ca, and favorable adsorption of Ca atoms at Ce-enriched sites. Meanwhile, the tensile yield strength and ultimate tensile strength increased from 270 ± 4 and 316 ± 5 to 293 ± 6 and 326 ± 6 MPa, respectively, mainly owing to precipitation strengthening by the rod-like Al<ce:inf loc=\"post\">2</ce:inf>Ca phase, grain boundary strengthening, and residual dislocation strengthening. The ignition temperature also increased from 897 ± 15 to 971 ± 6°C. This improvement is attributed to Ce/La-induced redistribution of Ca, which increases dissolved Ca in the α-Mg matrix and promotes the formation of a compact MgO-CaO protective oxide film. These findings provide insight into rare-earth-mediated second-phase regulation for developing high-strength ignition-resistant Mg alloys.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"84 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148984733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Data-driven design of high-performance Ti-Fe-O alloys via iron oxide doping into titanium","authors":"X.X. Li, H.M. Zhang, X.W. Cheng, X.N. Mu, P.L. Zhao, Z.Y. Yang, S.C. Xiong","doi":"10.1016/j.jmst.2026.08.093","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.08.093","url":null,"abstract":"Conventional biomedical Ti alloys suffer from toxic elements, high cost, and the inability to quantify the nonlinear composition–microstructure–property correlation. Herein, a machine learning-driven strategy was proposed to establish high-precision property prediction models for Ti-Fe-O alloys, and four algorithms were compared to identify the optimal framework. Among them, the coefficient of determination (<ce:italic>R</ce:italic><ce:sup loc=\"post\">2</ce:sup>) of the optimal Random Forest (RF) model reached 0.98. Combined with the simulated annealing algorithm, inverse design was performed toward strength–ductility synergy, and the optimal Ti-1.28 wt.% Fe<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> alloy was successfully developed. This alloy exhibits a thermally stable α+β duplex microstructure, and annealing induces significant coarsening and morphological transformation of secondary α (α<ce:inf loc=\"post\">s</ce:inf>) from acicular to globular, which converts the hard, barely deformable β phase into a plastically deformable domain. O shows a gradient-type heterogeneous distribution across primary α and β phases. The as-annealed alloy achieves an ultimate tensile strength (UTS) of 888 MPa and an excellent elongation (El.) of 25.7%, demonstrating exceptional strength–ductility synergy. The results suggest that O redistribution and preferential accommodation in the α<ce:inf loc=\"post\">s</ce:inf>/β regions, together with O-assisted dislocation pinning, contribute to mitigating local O-induced embrittlement and promoting coordinated plastic deformation. Meanwhile, O-assisted dislocation pinning activates massive &lt;<ce:italic>c</ce:italic> + <ce:italic>a</ce:italic>&gt; dislocations, and deformation twinning together with stacking faults further enhances the strain-hardening capacity. This work provides a reliable data-driven route for the design and engineering application of high-O biomedical Ti alloys.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"269 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148984731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering dual asymmetry: Directed magnetic and random conductive bilayer aerogels for absorption‑dominated EMI shielding","authors":"Mengxin Liu, Haoran Zhang, Xinmeng Huang, Ying Miao, Rui Li, Jintang Zhou, Zhong Chen, Lei Pan","doi":"10.1016/j.jmst.2026.08.094","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.08.094","url":null,"abstract":"The rapid advancement of 5G communications and wearable electronics has intensified the demand for high-performance electromagnetic interference (EMI) shielding materials with low-reflection characteristics. Herein, we propose a dual-asymmetric design strategy that synergistically integrates compositional asymmetry (magnetic/conductive) and structural asymmetry (directed/random pores) within a bilayer aerogel architecture. Specifically, a magnetic/conductive bilayer aerogel (MCBA) comprising a directed magnetic top layer (ML) and a random conductive bottom layer (CL) was fabricated using a blended matrix of waterborne polyurethane (WPU) and bacterial cellulose (BC). The ML incorporates MXene@hollow Fe<ce:inf loc=\"post\">3</ce:inf>O<ce:inf loc=\"post\">4</ce:inf> (MXene@HFO) heterostructures and directionally freeze-cast vertically aligned microchannels that facilitate maximal entry of incident electromagnetic waves (EMWs); the CL employs MXene nanosheets bridged by carbon nanotubes (CNTs) within a randomly freeze-cast, isotropic three‑dimensional (3D) conductive network that ensures highly efficient EMW attenuation. The HFO loading was systematically tuned to optimize the electromagnetic parameters and impedance matching of the MXene@HFO fillers, while the filler contents, pore orientations, and layer thicknesses of both layers were co‑designed to maximize absorption‑dominated shielding performance. This spatial decoupling of wave entry and energy dissipation enables a synergistic “absorption–reflection–reabsorption” pathway, yielding an outstanding EMI shielding effectiveness (SE) of 83.02 dB and an exceptionally low reflection coefficient (<ce:italic>R</ce:italic>) of 0.151. Furthermore, the MCBA delivers a low density (∼0.269 g cm<ce:sup loc=\"post\">−3</ce:sup>), robust compressive resilience, low through‑plane thermal conductivity (∼0.149 W m<ce:sup loc=\"post\">−1</ce:sup> K<ce:sup loc=\"post\">−1</ce:sup>), and favorable infrared camouflage. This work presents an ingenious dual‑asymmetric design strategy for developing lightweight, resilient, absorption‑dominated, and multifunctional EMI shielding materials tailored for complex operational environments.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"9 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148984730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Residual nitrogen aggravating hydrogen embrittlement via boron grain-boundary depletion in press-hardened martensitic steel","authors":"Mengjie Gao, Xiaoyi Sun, Yuhe Huang, Zhenbang Fa, Shuize Wang, Jun Lu, Hongzhou Lu, Aimin Guo, Xinping Mao","doi":"10.1016/j.jmst.2026.08.091","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.08.091","url":null,"abstract":"The increasing use of scrap-based electric arc furnace routes inevitably introduces elevated residual nitrogen into press-hardened steels, raising concerns regarding their reliability in hydrogen-containing environments. In this work, the effect of residual nitrogen on hydrogen embrittlement (HE) in press-hardened martensitic steel was systematically investigated using steels with controlled nitrogen levels. Slow strain rate tensile tests after hydrogen pre-charging reveal that increasing nitrogen content markedly aggravates HE susceptibility, with the HE index rising from ∼43% to ∼61%, accompanied by a transition toward intergranular-dominated fracture. Microstructural characterization confirms that both steels exhibit fully martensitic structures after hot stamping; however, higher nitrogen deteriorates hardenability and promotes the formation of coarser and more numerous TiN particles. Thermodynamic calculations and inclusion analyses demonstrate that elevated nitrogen enhances TiN precipitation, which modifies boron partitioning. Atom probe tomography provides direct atomic-scale evidence that boron segregates to prior-austenite grain boundaries in the low-nitrogen steel, whereas such segregation is absent in the high-nitrogen counterpart, indicating nitrogen-induced boron depletion at grain boundaries. First-principles calculations show that boron segregation strengthens grain-boundary cohesion (<ce:italic>E</ce:italic><ce:inf loc=\"post\">str</ce:inf> ≈ −0.3 eV), suggesting that the loss of boundary boron reduces interfacial stability and facilitates hydrogen-enhanced decohesion. The combined results establish a mechanistic framework in which residual nitrogen aggravates HE primarily by suppressing boron grain-boundary segregation rather than by altering the martensitic matrix itself. These findings provide critical guidance for nitrogen control in sustainable electric-arc-furnace-produced press-hardened steels.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"14 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148984758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical reconstruction-confinement coupling of defect-rich V2O5 nanowires enables ultralong-life zinc-ion storage","authors":"Shengping Wang, Shangwang Le, Jiangcong Zhou, Fangan Liang, Denglian Chen, Menghui Mu, Xiang Hu, Shenglin Zhong","doi":"10.1016/j.jmst.2026.09.014","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.09.014","url":null,"abstract":"Vanadium-based oxides with multiple redox states are promising cathodes for aqueous zinc-ion batteries (AZIBs), yet their practical application is hindered by sluggish Zn<ce:sup loc=\"post\">2+</ce:sup> transport, structural degradation, and vanadium dissolution during prolonged cycling. Herein, we report a confinement-engineered and electrochemically reconstructed vanadium-oxide cathode, in which V<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">5</ce:inf> nanowires are spatially embedded within a conductive carbon nanofiber network and subsequently transformed into a defect-rich hydrated vanadium-oxide framework through electrochemical induction. The carbon nanofiber matrix not only establishes continuous electron-transport pathways but also effectively suppresses active-material dissolution through spatial confinement. Moreover, electrochemical reconstruction generates abundant oxygen vacancies and structural water, leading to a highly active yet structurally resilient Zn-storage framework. Comprehensive experimental investigations combined with density functional theory calculations reveal that the reconstructed architecture simultaneously optimizes the electronic structure, strengthens Zn<ce:sup loc=\"post\">2+</ce:sup> adsorption, lowers the Zn<ce:sup loc=\"post\">2+</ce:sup> migration barrier, and promotes pseudocapacitive-dominated reaction kinetics. Consequently, the optimized V<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">5</ce:inf>-NWS@CNFs cathode delivers a high reversible capacity of 463.1 mAh g<ce:sup loc=\"post\">−1</ce:sup> at 1.0 A g<ce:sup loc=\"post\">−1</ce:sup> and retains 96% of its capacity after an ultralong lifespan of 16 000 cycles at an ultrahigh current density of 20 A g<ce:sup loc=\"post\">−1</ce:sup>. This work demonstrates electrochemical reconstruction-confinement coupling as an effective strategy for constructing high-rate and ultralong-life cathodes for advanced aqueous energy-storage systems.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"202 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148984757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Digital modeling for rapid prediction and multi-objective optimization of the entire microstructure and property fields of complex components in die forging","authors":"Hao Hu, Fan Zhao, Zhilei Wang, Zhihao Zhang, Daoxiang Wu, Zhengan Wang, Jianxin Xie","doi":"10.1016/j.jmst.2026.08.090","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.08.090","url":null,"abstract":"Die forging components used in high-end manufacturing have complex geometries and many interacting process variables, complicating accurate prediction and control of the entire microstructure and properties. This work proposes a method integrating finite element simulations, a limited number of forging experiments, and machine learning to enable rapid and precise prediction and optimization of die forging component’s entire microstructure and property. First, finite element simulations were conducted under 114 different sets of process parameters. The deformation physical quantities (mean deformation temperature, mean strain rate, mean equivalent stress, and equivalent strain throughout the forging process) were obtained at 100 feature points on the forgings. Using forging process parameters and feature point coordinates as inputs, deformation physical quantity prediction models (DPQ models) were established employing the gradient boosting algorithm. Next, forging experiments were conducted under 16 different sets of process parameters. The microstructure and properties were measured at six sampling points in forging samples, including grain size, recrystallization volume fraction, grain aspect ratio, and hardness. Using deformation physical quantities as inputs, microstructure and property prediction models (MP models) were developed employing the random forest algorithm. The DPQ and MP models were then connected in series and combined with thin plate spline interpolation to enable rapid prediction of forging’s entire microstructure and property fields. Prediction time is on the order of seconds, with errors below 10%. For forging process parameters optimization, a multi-objective optimization method based on a genetic algorithm was developed to achieve grain refinement, hardness improvement, and homogenization of grain size and hardness. This work offers valuable insights and methodological references for real-time prediction and intelligent control of the microstructure and properties of die forgings.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"61 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148984756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature-dependent island size-morphology correlation in Smoluchowski ripening from machine-learning molecular dynamics","authors":"Tong Liu, Chongteng Wu, Ziqi Sun, Yongkang Jiang, Tao Zhang, Zhenwei Wu, Maozhi Li, Yuefeng Su, Gang Sun, Duanyun Cao","doi":"10.1016/j.jmst.2026.08.088","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.08.088","url":null,"abstract":"Precise fabrication of nanostructures on surfaces requires an atomic-level understanding of surface ripening. Although Smoluchowski ripening (SR) describes the phenomenon where nanostructures migrate, collide, and coalesce, resolving the coupled temperature-dependent evolution of island size and morphology in a many-island ensemble remains challenging. Here, we develop a high-accuracy machine-learning potential (MLP) combined with large-scale molecular dynamics (MD) simulations to examine nanosecond-scale, early-stage nonequilibrium SR-like coarsening of Zn adatoms on the Zn(0001) basal surface over 100–500 K at 12.5% coverage, using three independent 4 ns trajectories at each temperature. We identify a reproducible three-stage evolution: initial clustering and early aggregation, active coalescence, and quasi-steady ripening. Temperature strongly regulates island size and morphology, with higher temperatures yielding larger, less morphologically anisotropic islands. Crucially, we uncover a consistent temperature-dependent island size-morphology correlation and trace it to the coupling between size-dependent thermodynamic preference for higher-coordination compact structures and temperature-enhanced kinetic relaxation through edge diffusion and post-coalescence rearrangement. These results demonstrate the capability of MLP-MD and provide an atomistic framework for understanding the coupled evolution of island size and morphology during early-stage surface coarsening, with significant implications for fields such as catalysis and electronic devices.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"47 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148984689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hardness convergence enables ductilization of flash-heated high-carbon martensitic steel via two-stage tempering","authors":"Haixiao Ye, Liejun Li, Xianqiang Xing, Jianping Ouyang, Jixiang Gao, Chengpeng Huang, Zhengwu Peng","doi":"10.1016/j.jmst.2026.08.087","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.08.087","url":null,"abstract":"Flash quench-tempering is an efficient route for producing ultrahigh-strength high-carbon martensitic steels by refining the martensitic framework and retaining a high defect density. However, further improving ductility without sacrificing ultrahigh strength remains challenging because non-equilibrium carbon distribution generates microscale mechanical heterogeneity and promotes strain localization. Here, we propose a two-stage tempering strategy to ductilize a flash-heated high-carbon low-alloy martensitic steel without sacrificing strength. Compared with the flash quench-tempered (QT) steel, which exhibited a yield strength of ∼2067 MPa, an ultimate tensile strength of ∼2254 MPa, and a total elongation of ∼7.5%, the secondary-tempered steel, hereafter referred to as QTT steel, maintained comparable strength while increasing the total elongation to ∼11.1%. Microstructural characterization revealed continued carbide evolution from η-Fe<ce:inf loc=\"post\">2</ce:inf>C to θ-Fe<ce:inf loc=\"post\">3</ce:inf>C, while the martensitic block size and dislocation density were both largely retained. Nanoindentation mapping demonstrated a clear convergence of local hardness after secondary tempering, as evidenced by the decrease in the fraction of high-hardness indents above 12 GPa from 19% to 3.5% and the reduction in hardness standard deviation from 3.1 to 1.8 GPa. High-resolution micro-digital image correlation (μ-DIC) further revealed reduced microscale strain heterogeneity after secondary tempering, indicating improved deformation compatibility. This enhanced ductility is attributed to hardness convergence and improved deformation compatibility rather than global martensite softening. These findings establish two-stage tempering as a practical strategy for ductilizing flash-heated ultrahigh-strength martensitic steels by tailoring local mechanical gradients.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"9 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148984686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature-dependent interfacial degradation and premature oxide spallation of a Y-Hf co-doped AlCrFeNi multi-principal element alloy","authors":"Aihui Huang, Yusheng Tian, Yifeng Tang, Dongyu Wei, Han Zhang, Shiping Cai, Pengyi Lv, Ning Wang, Youbei Sun, Chao Yang, Guoliang Zhu, Jie Lu, Xiaofeng Zhao, Paul K. Chu","doi":"10.1016/j.jmst.2026.08.089","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.08.089","url":null,"abstract":"The high-temperature oxidation resistance of multi-principal element alloys (MPEAs) is influenced by the adhesion and stability of the oxide scale. In this study, the oxidation behavior and failure mechanism of the Y-Hf co-doped AlCrFeNi MPEA at 1100 and 1200°C in static air are studied. After oxidation for 500 h at 1100°C, a continuous, adherent α-Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> scale consisting of inner columnar grains and outer equiaxed grains is formed. In contrast, severe spallation and interfacial rumpling are observed after oxidation for 50 h at 1200°C, despite the formation of a similar α-Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> scale. The premature spallation is attributed to the degradation of the oxide-scale/alloy interface. Accelerated Al consumption and phase-dependent Al/Ni mobility mismatch promote interfacial pore formation, reducing the effective contact area between the scale and substrate. The sulfur enrichment detected at the spalled interface suppresses pore healing and converts interfacial pores into effective decohesion sites. Furthermore, the reduced high-temperature strength of the alloy enhances oxide rumpling, facilitating stress localization and accelerating scale spallation. These results indicate that the beneficial Y-Hf reactive-element effect in stabilizing the oxide scale becomes insufficient at 1200°C under severe interfacial degradation conditions, providing scientific guidance for developing MPEAs with enhanced oxidation resistance.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"17 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148984687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in covalent organic frameworks-based S-scheme photocatalysts","authors":"Guotai Sun, Jiayao Wei, Zige Tai, Yuting Liu, Yaoyao Wang, Hongyu Xiang","doi":"10.1016/j.jmst.2026.09.013","DOIUrl":"https://doi.org/10.1016/j.jmst.2026.09.013","url":null,"abstract":"Covalent organic frameworks (COFs) have drawn considerable interest in photocatalysis owing to their π‑conjugated networks, large specific surface areas, and adjustable pore structures. However, single‑component COFs are constrained by rapid photo-generated charge recombination and insufficient redox driving forces, which hamper their catalytic efficiency. Constructing S‑scheme heterostructures by coupling COFs with suitable semiconductors can facilitate charge separation and boost both oxidation and reduction capacities. This review first outlines the evolution of S‑scheme heterojunctions and the regulation principles of interfacial charge carrier migration. Subsequently, COFs are categorized according to their linkages and building blocks. Then, the synthesis strategies and characterization approaches of COF‑based S‑scheme heterostructures, along with the applications in photocatalytic H<ce:inf loc=\"post\">2</ce:inf> production, H<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">2</ce:inf> synthesis, CO<ce:inf loc=\"post\">2</ce:inf> reduction, organic conversion, and pollutant degradation, are reviewed. Lastly, to address the remaining challenges, we propose several recommendations, including strengthening interfacial bonding, enhancing durability, lowering costs, and incorporating multiple advanced characterization techniques, to facilitate the fabrication of high-efficiency photocatalytic systems.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"36 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148984688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}