Journal of Alloys and Compounds最新文献

{"title":"Dual-strategy modification of NiMoO4 yields high performance bifunctional water splitting catalysts","authors":"Shanshan Ye, Shuangxian Wu, Lihan Wen, Hao Chen, Juan Shen, Bo Jin","doi":"10.1016/j.jallcom.2026.188344","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188344","url":null,"abstract":"Nickel molybdate is considered a promising alternative to noble-metal catalysts for water splitting because its microstructure and electronic structure can be readily tuned. However, its inherent low catalytic activity limits the OER and HER performance and stability of the catalyst. This work employs a simple one step hydrothermal method to synthesize iron-doped nickel molybdate (FNMO) on a self-assembled Ti₃C₂/NF substrate, followed by phosphorating treatment with PH₃ gas to obtain the phosphorated product Pi/FNMO/Ti₃C₂/NF nanorod array catalyst. The Pi/FNMO/Ti₃C₂/NF catalyst exhibits superior oxygen evolution reaction (OER) activity (189.8<!-- --> <!-- -->mV @ 10<!-- --> <!-- -->mA<!-- --> <!-- -->cm⁻², 329.8<!-- --> <!-- -->mV @ 100<!-- --> <!-- -->mA<!-- --> <!-- -->cm⁻²) and hydrogen evolution reaction (HER) activity (73<!-- --> <!-- -->mV @ 10<!-- --> <!-- -->mA<!-- --> <!-- -->cm⁻²), significantly surpassing commercial RuO₂ and Pt/C catalysts. This may be attributed to the formation of a heterojunction between FNMO and Ti₃C₂ within the Pi/FNMO/Ti₃C₂/NF composite following phosphorylation, which modulates the electronic structure and reduces the overpotentials for both the OER and HER. Meanwhile, as a bifunctional catalyst, Pi/FNMO/Ti₃C₂/NF requires only 1.57<!-- --> <!-- -->V to drive overall water splitting at a current density of 100<!-- --> <!-- -->mA<!-- --> <!-- -->cm⁻² and maintain stable output for 180<!-- --> <!-- -->h with a decay rate of only 5.5%. This work demonstrates the feasibility of enhancing overall water splitting performance through the incorporation of heteroatom doping and phosphorylation modification in nickel molybdate-MXene composites, providing a useful strategy for the design of high-performance NiMoO₄-MXene electrocatalysts for alkaline water splitting.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"2 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147755074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of ZnO Morphology in Promoting NiO Heterojunction Formation and Enhanced Gas Sensing","authors":"P.P. Ortega, S. Gherardi, E. Spagnoli, G. Zonta, M. Astolfi, G. Cruciani, V.R. Mastelaro, M.A. Ponce, C. Malagù, E. Longo","doi":"10.1016/j.jallcom.2026.188279","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188279","url":null,"abstract":"Zinc oxide samples with plate and rod morphologies were synthesized via the microwave-assisted hydrothermal (MAH) method and decorated with NiO to form heterostructures. Rietveld refinement revealed NiO contents of ~25<!-- --> <!-- -->wt% and ~40<!-- --> <!-- -->wt% for each morphology. The ZnO plates demonstrated superior response to 1 ppm ethanol compared to ZnO rods, attributed to their more reactive exposed crystal facets and stronger depletion layer effects. Upon decoration with 25<!-- --> <!-- -->wt% NiO (ZnO-P-20Ni), the ethanol response increased by 275% and 410% relative to the pure ZnO plates and rods, respectively. Conductance measurements confirmed the p–n heterojunction formation only in ZnO-P-20Ni, with conductance decreasing from 1.7 × 10⁻⁷ to 7.6 × 10⁻⁸ S at 350°C compared to the ZnO plates. In contrast, 40<!-- --> <!-- -->wt% NiO and all rod-based heterostructures showed no improvements, likely due to parallel conduction through NiO. The plate-like ZnO/NiO heterostructures displayed improved sensing properties across all testing conditions in dry air and better performance for CO sensing under humid conditions. The plates retained 75% of the ethanol response under 40% relative humidity. These findings highlight the importance of ZnO morphology in enhancing gas sensing performance and enabling heterojunction formation, providing a valuable strategy for designing efficient chemoresistive sensors.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"6 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147752717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Superior strength-ductility synergy in micro-deformation diffusion bonded Ti-6Al-4V achieved by gradient nanostructured surfaces","authors":"Shiwei Li, Shengyu Wang, Pengkun Liu, Jinglong Li, Jiangtao Xiong, Han Mei, Zhenlin Chen, Wei Yu, Xiaoyang Bi, Peng Li, Honggang Dong","doi":"10.1016/j.jallcom.2026.188289","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188289","url":null,"abstract":"Micro-deformation diffusion bonding of Ti-6Al-4V alloy is a key solid‑state joining process for manufacturing components with intricate internal channels, as required in diffusion bonding additive manufacturing (DBAM). A critical challenge lies in achieving sound joint performance while limiting uniaxial deformation to below 1% to preserve geometric accuracy. Here, gradient nanostructured surface layers about 25 μm thick were fabricated on Ti‑6Al‑4<!-- --> <!-- -->V via high‑pressure waterjet peening. The nanostructured surface, with an average grain size of 80<!-- --> <!-- -->nm at the outermost region (statistically measured over a 2.25 μm × 2.25 μm area immediately beneath activated surface), greatly enhanced interfacial diffusion and void closure during bonding at a uniaxial deformation of approximately 0.8%. The bonding ratio rose from 83.2% for non‑activated joints to 99.1% and 100% for unilaterally and bilaterally activated joints, respectively. Complete interfacial recrystallization and full interface migration were achieved, forming a fine‑grained equiaxed α phase band. Compared with non‑activated joints, the activated joints showed a 6% increase in ultimate tensile strength (975<!-- --> <!-- -->MPa) and a 646% rise in fracture elongation (19.4%), outperforming even the base metal. This synergy stems from void elimination, which suppressed premature cracking, and a recrystallized interfacial microstructure that provided a remarkably high and sustained work-hardening rate (maintained above 1100<!-- --> <!-- -->MPa up to a true strain of 0.117), demonstrating the joint’s enhanced capabilities for dislocation accommodation. The approach successfully decouples the traditional trade‑off between precision and performance, offering a viable route to high‑integrity DBAM components with complex internal features.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"26 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on enhanced grain refinement of continuous extruded CuZn30 brass with microalloying elements","authors":"Yu-qian Song, Song-wei Wang, Shuai-feng Chen, Hong-wu Song, Hui-wen Zhu, Bing Li, Ren-guo Guan","doi":"10.1016/j.jallcom.2026.188284","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188284","url":null,"abstract":"Brass alloys usually have excellent corrosion resistance, but inadequate wear resistance due to low hardness, which limits their high-end applications. It is an effective strategy to enhance the wear resistance by significantly refining the brass grains to increase the hardness. Whereas it is still of great challenge for fabricating ultrafine-grained brass alloys via hot working process owing to their quick recrystallization and grain growth. In this study, enhanced grain refinement of CuZn30 brass with trace microalloying elements P, Ni, and Ag (total content of 0.018<!-- --> <!-- -->wt%) was successfully realized after two-pass continuous extrusion deformation. And the microstructure evolution especially the characteristics of dynamic recrystallization and its effect on mechanical properties were then studied. The results showed that the microalloyed CuZn30 alloy achieved a greatly refined microstructure with an average grain size of 0.97 μm after two passes continuous extrusion, compared to 14.33 μm for the normal CuZn30 alloy. It was found that microalloying effectively inhibited the discontinuous dynamic recrystallization behavior, which in turn triggered the continuous dynamic recrystallization during the continuous extrusion process. Such a transition in the dynamic recrystallization mechanism is closely related to the addition of microalloying elements, which alter the dislocation movement behavior, and promote the formation of dense subgrain structures. With enhanced grain refinement, the microhardness increased from 92.96 HV to 180.83 HV correspondingly, with only a slight decrease in electrical conductivity. These results show that the hardness of brass alloys has been significantly improved by microalloying and industrially available deformation processes, which has considerable application potential for improving wear resistance and broadening high-end applications.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"426 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photostable Tb3+ doped CaF2 Nanophosphors Enabling Durable Luminescent Anticounterfeiting Inks and Fingerprint Visualization","authors":"Vipul Mishra, Sanket Korde, Vinay S. Palaparthy, Hitesh Borkar","doi":"10.1016/j.jallcom.2026.188257","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188257","url":null,"abstract":"Tb³⁺ activated CaF₂ nanophosphors were synthesized via a co-precipitation route and investigated for their structural stability, photoluminescence characteristics, and luminescence enabled security applications. X-ray diffraction and Rietveld refinement confirmed the formation of phase-pure cubic CaF₂ (Fm-3m), while SEM analysis revealed uniformly distributed nanoparticles with an average crystallite size of ~40<!-- --> <!-- -->nm. Under 378<!-- --> <!-- -->nm excitation, the phosphors exhibit intense green emission centred at 545<!-- --> <!-- -->nm corresponding to the ⁵D₄ → ⁷F₅ transition of Tb³⁺, accompanied by a long decay lifetime of ~8.4ms, enabling time-resolved luminescence discrimination. The emission intensity increases systematically with Tb³⁺ concentration up to 0.10<!-- --> <!-- -->mol% without observable concentration quenching, indicating efficient radiative recombination within the low-phonon CaF₂ host lattice. A luminescent ink formulated by dispersing the optimized phosphor in an ethanol glycerol medium produces covert markings that remain inconspicuous under ambient light but emit bright green luminescence under UV irradiation. The ink demonstrates excellent thermal stability (99.3% emission retention at 60 °C), long-term photostability (&gt;150<!-- --> <!-- -->h), and strong resistance to common solvents, confirming its optical robustness. In addition, the phosphor powder enables high contrast visualization of latent fingerprints, revealing level-2 minutiae features with minimal background interference under UV excitation. The results establish CaF₂:Tb³⁺ as a photostable, long-lived luminescent material suitable for durableanticounterfeiting inks and luminescence based forensic visualization.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Li2TiO3 crystal phase on the hydrogenation and dehydrogenation kinetics of Mg/MgH2","authors":"Yoshihiro Shimizu, Daichi Shiota, Ryosuke Sato, Manshi Ohyanagi","doi":"10.1016/j.jallcom.2026.188274","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188274","url":null,"abstract":"To clarify how the crystal phase of Li₂TiO₃ influences the reaction kinetics of Mg-based hydrogen storage materials, α- and β-Li₂TiO₃ were synthesized, and their catalytic effects on the hydrogenation of Mg and dehydrogenation of MgH₂ were systematically evaluated. The as-milled α-Li₂TiO₃ consisted of nanocrystallites with sizes of approximately 5–10<!-- --> <!-- -->nm, and both the α- and β-phases remained independent after mixing with MgH₂. Kinetic analyses revealed that α-Li₂TiO₃ provided the strongest catalytic enhancement, reducing the activation energies for hydrogenation and dehydrogenation to 42.7 and 40.8<!-- --> <!-- -->kJ<!-- --> <!-- -->mol^-1, respectively. β-Li₂TiO₃ also promoted both reactions, lowering the activation energies to 68.8 and 82.0<!-- --> <!-- -->kJ<!-- --> <!-- -->mol^-1, respectively. Because frequency factors can be strongly influenced by the catalyst particle size and dispersion, the catalytic performance in this study was primarily assessed based on the reduction in the activation energy. The results demonstrate that the crystal phase of Li₂TiO₃ exerts a decisive influence on the hydrogenation and dehydrogenation kinetics of Mg/MgH₂ systems. In particular, the α-phase is highly effective in lowering the reaction barriers, indicating that crystal-phase control is essential for designing oxide catalysts suitable for Mg-based hydrogen storage materials.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"17 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-Engineered Perovskite Solar Cell Technology: Scalable Fabrication, Lifecycle and Field Ready Renewable Innovations","authors":"N. Manjubaashini, P. Baraneedharan","doi":"10.1016/j.jallcom.2026.188233","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188233","url":null,"abstract":"Perovskite materials have emerged as a promising alternative to conventional silicon in solar cell technology due to their outstanding optoelectronic properties, tunable bandgap, low-temperature processability, and suitability for lightweight and flexible device architectures. This review provides a comprehensive and critical evaluation of the perovskite-based solar cell landscape, with particular emphasis on eco-friendly fabrication approaches, crystallization control, defect passivation, and compositional engineering which influence device efficiency and operational stability. Recent progress in green solvent systems, scalable deposition methods, and interface engineering is systematically examined in relation to large-area manufacturing feasibility and practical device integration. Beyond performance enhancement, the review also highlights key challenges, including long-term operational stability, environmental impact, lead toxicity, and degradation pathways. In addition, life cycle assessment, recycling methods, and circular economy-based recovery strategies are discussed to identify sustainable routes for large-scale deployment. The role of predictive design approaches, including theoretical modeling and data-driven materials discovery, is also explored as a powerful means to accelerate the development of efficient and environmentally responsible perovskite solar cells. Overall, this review consolidates recent advancements and outlines critical future directions for transitioning perovskite solar cells from laboratory-scale research to commercially viable and sustainable energy technologies.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"6 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Characterization, Bonding Performance, and Residual Stress Analysis of Titanium alloy/Cemented Carbide Composite Tubes with V/Fe Composite intermediate layers","authors":"Yuhe Tian, Kaixiang Sheng, Yifan Liu, Shunjie Jia, Weijun He, Bin Jiang","doi":"10.1016/j.jallcom.2026.188210","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188210","url":null,"abstract":"The fabrication of titanium alloy/cemented carbide composite tubes significantly improves the wear resistance of the titanium alloy, demonstrating promising application potential in aviation, transportation, and defense industries. However, the formation of brittle intermetallic compounds between titanium alloy and cemented carbide, coupled with their significant thermal expansion coefficient differences, poses challenges to enhancing interface bonding performance. In this work, the interface microstructure and interfacial bonding performance of titanium alloy/cemented carbide composite tube with interlayer of V and Fe foils were studied. In addition, experimental characterization based on digital image correlation (DIC) and numerical simulation were carried out to investigate the residual stress in the composite tubes. Results indicate that local shear strength decreases from top to bottom, with a maximum value of 294.5<!-- --> <!-- -->MPa, while annular shear strength remains relatively uniform along the tube length, peaking at 230.5<!-- --> <!-- -->MPa. Shear failure occurs at the V/Fe interface due to the presence of brittle V₂C and V₆C₅ phases. The absolute value of the residual stress in the titanium alloy layer decreases radially outward. During the diffusion bonding stage (DBS), titanium alloy is subjected to solid particle medium loading, resulting in compressive principal stress dominated by S33 (σ_θ). In the cooling stage (CS), thermal contraction maintains compressive principal stress, mainly S11 (σ_R). Along the tube height during DBS, all stress components exhibit minimum absolute values in the mid-section. At CS, only S22 (σ_Z) shows the lowest magnitude in the middle region. The post-cooling compressive stress contributes to enhanced interfacial bonding strength. This study provides a theoretical basis for the fabrication and residual stress testing for titanium alloy/cemented carbide composite tube.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"428 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147735652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cerium-modified (Ba,Ca)(Zr,Ti)O3 Lead-free Ceramics with Superior Energy Storage Efficiency","authors":"Aravindkrishna Talluri, Nirmal Prashanth Maria Joseph Raj, T.S. Akhil Raman, K.C. James Raju, Kaushiga Chandrasekaran, Annapureddy Venkateswarlu, Mahesh Peddigari","doi":"10.1016/j.jallcom.2026.188188","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188188","url":null,"abstract":"Dielectric ceramic capacitors play a crucial role in modern electronics, owing to their high-power density, making them particularly suitable for pulsed-power applications. Among lead-free ceramic systems, (Ba_0.825,Ca_0.175)(Zr_0.015,Ti_0.985)O₃ (BCZT) ceramics have drawn considerable attention due to their excellent dielectric performance, including high permittivity, high breakdown strength, and low dielectric loss. This work systematically explored the influence of cerium (Ce) ion incorporation on the energy storage behaviour of BCZT ceramics synthesized via a cost-effective solid-state reaction route. In the BCZT system, Ce-doping at the A-site disrupted long-range order and induced relaxor ferroelectric behaviour. The optimal Ce-doped BCZT composition achieved a significantly improved recoverable energy density (<em>U</em>_<em>rec</em>) of 608 mJ/cm³ with an ultrahigh efficiency (<em>η</em>) of 96.5% at a 140<!-- --> <!-- -->kV/cm and an excellent figure of merit (FOM) of 124.08 μJ/(V. cm²) in contrast to the undoped BCZT ceramics (<em>U</em>_<em>rec</em> ~ 267 mJ/cm³, <em>η</em> ~ 77.8%, and FOM ~ 15.03 μJ/(V. cm²)). The optimized Ce-doped BCZT ceramic exhibited excellent fatigue endurance, maintaining stable <em>U</em>_<em>rec</em> and <em>η</em> over 10⁵ cycles. The high Weibull modulus (<em>m</em> = 14.52) confirms the strong breakdown reliability. The sample exhibited an ultrafast discharge response with <em>τ</em>_0.9 = 2.4 μs and a power density of 32<!-- --> <!-- -->kW/cm³ at 26<!-- --> <!-- -->kV/cm. These findings highlight that the Ce-doped BCZT ceramics can be viable candidates for next-generation highly efficient high-energy density capacitor applications.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"147 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147735772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Amplifying the Photocatalytic Activity of L(S)@M(C) Schottky Junction via Strategic Surfactant Engineering for Superior SMX Degradation","authors":"Yu Feng, Xiaoyue Duan, Xin Ren, Xuesong Zhao","doi":"10.1016/j.jallcom.2026.188212","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188212","url":null,"abstract":"The low carrier separation efficiency and high interfacial charge transfer resistance in photocatalysts hinder their practical application. While layered double hydroxides (LDHs) and MXene offer unique layered structures and tunable electronic properties, LDHs suffer from low carrier mobility and rapid charge recombination, and MXene tends to oxidize and restack. To address these interfacial challenges, a surfactant-directed assembly strategy using anionic sodium dodecyl benzene sulfonate (SDBS) and cationic hexadecyl trimethyl ammonium bromide (CTAB) is developed to construct an LDHs(SDBS)@MXene(CTAB) Schottky heterojunction. This approach inhibits layer aggregation and creates a strong built-in electric field via interfacial dipole engineering, enabling unidirectional and rapid electron transfer from LDHs(SDBS) to MXene(CTAB) and extending charge separation lifetime. The optimized interface also promotes the generation of reactive species (•OH and ¹O₂). Under visible light, the composite exhibits a several-fold increase in the degradation rate of sulfamethoxazole (SMX), enhanced mineralization, and excellent cycling stability compared to individual components. Photoelectrochemical tests, EPR, and DFT calculations confirm the critical role of the surfactant-induced interface in charge separation and transfer. Toxicity assessment shows reduced ecological risk of degradation intermediates. This work provides a new strategy for designing high-performance Schottky-junction photocatalysts and offers insights for efficient antibiotic wastewater treatment.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"21 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147735654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}