Materials Science and Engineering: B最新文献

{"title":"Electrocatalytic Hydrogen and Oxygen Dynamic Production via Magnetic-Field-Induced Aligned Alloyed Nickel-Iron Nanowires","authors":"Reza Babashahi ,&nbsp;Mohammad Mirzaei ,&nbsp;Reza Rahighi ,&nbsp;Ali Ghaheri Najafabadi ,&nbsp;Fatemehsadat Sayyedan ,&nbsp;Saied Mehran Nahvi","doi":"10.1016/j.mseb.2025.118750","DOIUrl":"10.1016/j.mseb.2025.118750","url":null,"abstract":"<div><div>Optimizing Nickel–iron nanostructure over large surface areas is critical. This study fabricates well-aligned Ni–Fe nanowires on nickel foam, aiming to improve catalytic activity, charge transport, and durability. Using two ferrite permanent magnets during chemical bath deposition, the approach yielded uniform NWs (55–64 nm) compared to disordered morphologies (150–180 nm) formed without magnetic guidance. Characterization via field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and electrochemical impedance spectroscopy (EIS) confirmed improved nanostructure alignment and reduced charge transfer resistance from 20 Ω to 5.2 Ω. Electrochemical performance tests depicted an overpotential of 230 mV 1.46 V vs. the reversible hydrogen electrode (RHE) at 10 mA/cm² and a Tafel slope of 54 mV.dec⁻¹, indicating efficient Oxygen Evolution Reaction (OER) kinetics. The electrochemically active surface area increased to 300 cm², which was over 7.5 times greater than that of the substrate (by 40 cm²), enhancing reaction interfaces. Durability was validated by a minimal 3 mV change over 12 h at 0.5 A/cm² and a negligible 0.01 V shift in step-potential tests.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118750"},"PeriodicalIF":4.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145019496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailoring Ti3C2Tx MXene multilayers for biomaterial integration: synthesis, characterization, and cytotoxicity","authors":"Pasa Yaman ,&nbsp;Bedri Onur Kucukyildirim","doi":"10.1016/j.mseb.2025.118752","DOIUrl":"10.1016/j.mseb.2025.118752","url":null,"abstract":"<div><div>This study examines the biomedical potential of Ti₃C₂T_x MXene multilayers, which are synthesized from the Ti₃AlC₂ MAX phase using different wet chemical etching methods: HF, LiF/HCl, and NaF/HCl. The effects of each etchant on the morphology, interlayer spacing, surface terminations, and defect structures are thoroughly analyzed using techniques such as XRD, FESEM, EDS, FTIR, and Raman spectroscopy. Cytotoxicity tests based on assays using L929 fibroblast cells demonstrate a strong relationship between surface groups and biocompatibility. Among the tested variants, NaF/HCl-etched MXenes showed smoother multilayers with less structural damage, optimized surface terminations, and lower toxicity to cells compared to HF-etched multilayers, which exhibited more structural damage, surface oxidation, and higher toxicity. These results highlight the importance of selecting the right etching method in tailoring MXene multilayers for use in ceramic-based biomedical scaffolds and implantable devices, offering guidance for future development of biocompatible materials.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118752"},"PeriodicalIF":4.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145019497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental investigations on synthesis, rheological characterization, and application potential of TiO2-PAM nanofluids for light paraffinic crude oil","authors":"Manoj Kumar Yadav ,&nbsp;Tushar Sharma ,&nbsp;Koushik Guha Biswas ,&nbsp;Vikram Vishal","doi":"10.1016/j.mseb.2025.118773","DOIUrl":"10.1016/j.mseb.2025.118773","url":null,"abstract":"<div><div>The performance of nanofluid is often affected by premature phase separation, agglomeration, and uncontrolled size. Single-step offers a synthesis of agglomeration-free, size-independent, and highly stable nanoparticles which neither demands for extensive sonication/energy but also uses a cost-effective precursor/accelerator. Thus, in this study, stable TiO₂ nanofluids of customized size (20 to 100 nm) and concentration (0.04 wt%-0.4 wt%) were prepared <em>via</em> a sol–gel method that involves (a) constant concentration (0.04 wt%) of TTIP + 0.5–1.5 ml of NH₄OH (type I nanofluids: T1, T2, and T3) and (b) constant concentration (1 ml) of NH₄OH + 0.1 wt%-0.4 wt% of TTIP (type II nanofluids: T4, T5, and T6). The nanofluids exhibited better zeta-potential (−53 to −69 mV) however, phase separation occurred due to NP settlement over the storage period of 80 d (−37 to −60 mV) as validated by the results of DLS, UV–<em>vis</em>, and electrical conductivity. Further, nanofluids were analysed for IFT reduction of 4 kinds of paraffin. Moreover, their spreading on the surface of shale, beach sand, and sandstone was checked <em>via</em> contact angle tests for wettability alteration in porous media. All nanofluids showed some wetting for rock surface however, the order of preferential wetting for shale, beach sand, and sandstone was T2, T3, and T1, respectively. With type II nanofluids, T4, T5, and T6 ranked for similar preferential wetting in shale, beach sand, and sandstone, respectively. Finally, viscosity and G′ tests were conducted at 30 and 90 °C, to understand the impact of thermal energy on the rheological properties of nanofluids. Nanofluids were viscous liquids with classical shear-thinning behaviour, and they exhibited a gel-like nature due to dominating G′ from low to high levels of strain (1–100 %). The thermal impact on viscosity and elastic nature of nanofluids was found variable as nanofluids of smaller particles had the least reduction in viscosity and G′ than the one of large particles or large concentration.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118773"},"PeriodicalIF":4.6,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of g-C3N4 doped Cu/black TiO2 and its high photocatalytic reduction performance of CO2","authors":"Wenbin Huang,&nbsp;Ningran Hou,&nbsp;Han Yang,&nbsp;Zhen Xu,&nbsp;Tianyu Bai,&nbsp;Fan Shao,&nbsp;Yasong Zhou,&nbsp;Qiang Wei","doi":"10.1016/j.mseb.2025.118768","DOIUrl":"10.1016/j.mseb.2025.118768","url":null,"abstract":"<div><div>Series g-C₃N₄/Cu/B-TiO₂(x) composites with different mass ratio of g-C₃N₄ to Cu/B-TiO₂ were prepared and tested for photocatalytic reduction of CO₂. The structure–function relationship of the photocatalysts was investigated through various characterization methods and photocatalytic experiments. The results show that g-C₃N₄ can be uniformly distributed on the surface of Cu/B-TiO₂ and formed a stable heterojunction structure, which effectively reduced the band gap width of the catalyst, thus significantly improving the visible light absorption capacity of the catalyst. The modulation of the composite material properties can be realized by regulating the composite ratio of g-C3N4 and Cu/B-TiO₂. The rate and selectivity of photocatalytic reduction of CO₂ to produce CO reached the maximum when the mass ratio of g-C₃N₄ to Cu/B-TiO₂ was 3:7, and the rate of CO production was as high as 32.65 μmol∙g⁻¹∙h⁻¹, which was about 12.87 percentage points higher than that of Cu/B-TiO₂.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118768"},"PeriodicalIF":4.6,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145003573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Growth temperature dependent on the structure, device properties and carrier transport mechanisms of β-Ga2O3/GaAs heterojunctions","authors":"Yadan Li ,&nbsp;Yahan Wang ,&nbsp;Zhichao Chen ,&nbsp;Feng Ji ,&nbsp;Mi Zhou ,&nbsp;Kai Jiang ,&nbsp;Jishan Liu ,&nbsp;Hai Zhu ,&nbsp;Xianghu Wang","doi":"10.1016/j.mseb.2025.118767","DOIUrl":"10.1016/j.mseb.2025.118767","url":null,"abstract":"<div><div>Ga₂O₃ features a wide bandgap and excellent optoelectronic properties, making it highly valuable for applications in UV photodetectors, high-power electronics, and transparent conductive materials. Ga₂O₃ thin films were grown on Si-doped GaAs (100) substrates using pulsed laser deposition technology, followed by the fabrication of Ga₂O₃_/GaAs heterojunction solar-blind ultraviolet detectors. High-quality thin films have been achieved by optimizing the growth temperature. As the growth temperature increased from 500°C to 700°C, the particles deposited on the substrate are provided with sufficient energy to migrate and nucleate, resulting in improved crystallinity and reduced defects in the film. Additionally, the presence of an oxygen atmosphere during deposition reduced the concentration of oxygen vacancies, which further minimized oxygen-vacancy-related defects. As a result, the detector exhibits a 164-fold increase in external quantum efficiency, a 241-fold enhancement in responsivity, and a 44.5 % improvement in I_photo/I_dark. These findings provide an experimental foundation for the development of high-performance β<strong>-</strong>Ga₂O₃/GaAs heterojunction solar-blind UV detectors.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118767"},"PeriodicalIF":4.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel triple conducting layered perovskites BaLa1–xFexInO4–δ","authors":"N. Tarasova ,&nbsp;E. Abakumova ,&nbsp;T. Kuznetsova ,&nbsp;N. Danilov ,&nbsp;N. Lakiza ,&nbsp;V. Pryakhina ,&nbsp;A. Germov ,&nbsp;B. Goloborodsky ,&nbsp;Y. Suvorkova ,&nbsp;D. Mirzayants ,&nbsp;I. Animitsa","doi":"10.1016/j.mseb.2025.118745","DOIUrl":"10.1016/j.mseb.2025.118745","url":null,"abstract":"<div><div>In this paper, novel triple conducting layered perovskites BaLa_1–<em>_x</em>Fe<em>_x</em>InO_4–δ as potential materials for electrochemical devices have been obtained and investigated. It is elucidated that an iron addition into the lanthanum sublattice increases the crystalline lattice symmetry. Iron is present in two oxidation states Fe²⁺ and Fe³⁺. The obtained BaLa_0.9Fe_0.1InO_4–δ sample was found to hydrate. The dopant concentration growth resulted in the significant growth of the electrical conductivity (up to ∼ 4 orders of magnitude). The BaLa_0.9Fe_0.1InO_4–δ sample with a small dopant concentration is characterized by a mixed oxygen/ion/hole conductivity in dry air and by a triple protonic/oxygen-ionic/hole conductivity in humid air. The samples with <em>x</em>  = 0.4; 0.5 have predominantly hole conductivities. The Ba_1.1La_0.9InO_3.95 and BaLa_0.9Fe_0.1InO_4–δ have similar values of the thermal expansion coefficients.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118745"},"PeriodicalIF":4.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145003572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of interface electrostatics in T-gate GaN HEMTs for advanced pH sensing applications","authors":"Nudrat Sufiyan ,&nbsp;Aasif Mohammad Bhat ,&nbsp;Arathy Varghese ,&nbsp;Anup Kumar Sharma","doi":"10.1016/j.mseb.2025.118763","DOIUrl":"10.1016/j.mseb.2025.118763","url":null,"abstract":"<div><div>This work investigates a novel T-gate AlGaN/AlN/GaN HEMT designed as a pH sensor by incorporating electrolyte solution in the cavities on both sides of the gate. The sensor’s performance is evaluated based on the variation in the interface charge density corresponding to the change in electrolyte solution pH. This study examines the impact of varying pH solutions on the device’s characteristics, specifically focusing on threshold voltage sensitivity and drain current sensitivity. Furthermore, the gate voltage was optimized to achieve maximum transconductance (g_m) and, consequently, the highest sensitivity to pH changes. The linearity of the device was evaluated using VIP2, VIP3, IIP3, and IMD3 analyses. Notably, the proposed sensor exhibits an average threshold voltage sensitivity of 180 mV/pH, significantly exceeding the Nernstian limit (59 mV/pH), alongside a current sensitivity of 70.21 mA/mm.pH. These results underscore the potential of this recessed T-gate AlGaN/AlN/GaN HEMT as a compelling alternative for advanced pH sensing applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118763"},"PeriodicalIF":4.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eu3+-activated CsBSi2O6 red phosphor with high color purity and thermal stability for warm white LEDs","authors":"Feixiang Xu,&nbsp;Shuo Yang,&nbsp;Yujuan Dong","doi":"10.1016/j.mseb.2025.118765","DOIUrl":"10.1016/j.mseb.2025.118765","url":null,"abstract":"<div><div>In this paper, a novel CsBSi₂O₆:xEu³⁺(1 % ≤ x ≤ 9 %) red phosphor is successfully synthesized through the high-temperature solid-state process, featuring a tetragonal zeolite-like structure. The phosphor exhibits a dominant red emission peak at 61<strong><em>7</em></strong> nm under 392 nm ultraviolet excitation, attributed to the ⁵D₀→⁷F₂ electric dipole transition of Eu³⁺ ions, confirming their occupation of non-centrosymmetric sites in the host lattice. Optimal luminescence intensity is achieved at 7 % Eu³⁺ doping, beyond which concentration quenching occurred via static mechanisms driven by dipole–dipole interactions (critical transfer distance R_c ≈ 14.39 Å), with 79 % color purity (CIE: 0.5825, 0.4103) and 80.38 % intensity retention at 140 °C. Integrated into WLEDs with NUV chips, it achieves warm white light (CCT = 4910 K). This work presents that CsBSi₂O₆: Eu³⁺ is a cost-effective, highly thermally stable red phosphor and has great practical application potential in fields such as display technology and lighting equipment.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118765"},"PeriodicalIF":4.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic enhancement of dielectric, piezoelectric, and ferroelectric properties in (Ba0.95Ca0.05)(Ti0.92Sn0.08)O3 ceramics via sintering temperature optimization and surface treatment","authors":"Jinsong Xu,&nbsp;Wenyu Jiang,&nbsp;Weiming Xiong,&nbsp;Hang Li,&nbsp;Tianshu Zhao,&nbsp;Hanbin Zheng,&nbsp;Kaihan Shan,&nbsp;Weiting Meng,&nbsp;Fan Zhou,&nbsp;Lingyu Wan","doi":"10.1016/j.mseb.2025.118757","DOIUrl":"10.1016/j.mseb.2025.118757","url":null,"abstract":"<div><div>Piezoelectric ceramics have been widely employed in critical functional components, such as sensors, actuators, and transducers. With growing environmental concerns over lead pollution associated with conventional lead-based piezoelectric materials, considerable research efforts have been directed toward developing high-performance lead-free alternatives. Addressing the challenge of enhancing piezoelectric response in these eco-friendly materials has emerged as a crucial research focus. In this work, we synthesize (Ba_0.95Ca_0.05)(Ti_0.92Sn_0.08)O₃ (BCST) ceramics through a conventional solid-state reaction method. Systematic investigation of grain morphology, phase composition, dielectric, piezoelectric, and ferroelectric characteristics revealed 1440 °C as the optimal sintering temperature. The 1440 °C-sintered ceramics demonstrate superior dielectric and ferroelectric properties with a relative permittivity of <em>ε_r</em> = 20,472 and remanent polarization <em>P_r</em> = 10.73 µC/cm². Electrostrictive analysis and direct piezoelectric measurements confirm that this optimized sample achieves a maximum piezoelectric coefficient of <em>d</em>₃₃ = 469 pC/N. Subsequent post-annealing treatments in N₂ atmosphere significantly modified the functional properties of materials. The 700 °C-annealed ceramic exhibits a remarkable property enhancement, achieving <em>ε_r</em> = 27,589, <em>d</em>₃₃ = 519 pC/N, and <em>P_r</em> = 13.39 µC/cm² − representing 35 %, 11 %, and 25 % improvements respectively over non-annealed counterparts. This work establishes a dual optimization strategy combining sintering control and defect engineering to significantly boost the dielectric, piezoelectric, and ferroelectric properties of lead-free ceramics, thereby advancing their potential for practical electromechanical applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118757"},"PeriodicalIF":4.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144988758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and electrochemical performances of CuNi2S4 from MOF transformed layered double hydroxide","authors":"Yifan Fang,&nbsp;Jincheng Fan,&nbsp;Risheng Hu,&nbsp;Haiou Liu,&nbsp;Bo Wu,&nbsp;Zhenqiang Tang,&nbsp;Wenbin Luo,&nbsp;Zisheng Chao","doi":"10.1016/j.mseb.2025.118759","DOIUrl":"10.1016/j.mseb.2025.118759","url":null,"abstract":"<div><div>Supercapacitors are gaining prominence as energy storage devices due to their advantages such as fast charging and discharging, so there is an urgent need to develop higher performance devices. The electrode materials play a decisive role in the performance of supercapacitors. In this study, spinel CuNi₂S₄ were synthesized by CuNi layered double hydroxides from Cu Metal-Organic Frameworks, which has a high specific capacitance of 7.1 F cm⁻² (2784.3 F g⁻¹). The capacitance retention rate of 79 % was retained after 5000 long cycles. A hybrid supercapacitor with CuNi₂S₄ as cathode and activated carbon as anode was assembled with a specific capacitance of 423.6 mF cm⁻². The manufactured quasi-solid-state supercapacitor devices exhibit unique capacitance superposition properties in parallel configurations and voltage additive behavior in serial configurations. The fabricated solid-state supercapacitor-like devices show unique voltage stacking behavior in series configuration and capacitance stacking characteristics in parallel configuration.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118759"},"PeriodicalIF":4.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144988760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}