Materials Science and Engineering: B最新文献

{"title":"Effect of two-step annealing on the structural uniformity and magnetic properties of Fe73.5Cu1Nb3Si13.5B9 alloy magnetic cores.","authors":"Jiemin Li ,&nbsp;Yanmei Yang ,&nbsp;Xuelian Li ,&nbsp;Yumei Song ,&nbsp;Xingyu Liu ,&nbsp;Shurong Ning ,&nbsp;Guibing Shi ,&nbsp;Li Wang","doi":"10.1016/j.mseb.2025.119170","DOIUrl":"10.1016/j.mseb.2025.119170","url":null,"abstract":"<div><div>This study investigates the effects of a novel two-step annealing process on the structure uniformity and soft magnetic properties of Fe_73.5Cu₁Nb₃Si_13.5B₉ cores. Its innovation lies in the synergistic effect of Cu-clad low-temperature pre-annealing combined with conventional secondary annealing. The results demonstrate that the cores subjected to low temperature pre-annealing exhibits superior soft magnetic properties, characterized by a higher initial permeability (μ_i ≈ 189,076) and a lower coercivity (<em>H</em>_c ≈ 1.34 A/m), compared to conventionally annealed cores (μ_i ≈ 134,645, <em>H</em>_c ≈ 1.92 A/m). Microstructural analysis reveales that the pre-annealing treatment promotes a more uniform distribution of nanocrystallites within the core. The enhanced performance is consistent with the random magnetocrystalline anisotropy model considering grain-size distribution, from the analysis of the measured average grain size, its distribution, and the crystallized volume fraction. Furthermore, the uniformity of the grain distribution is found to have a more significant impact on the magnetic properties than the grain size.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119170"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145883410","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":"Assessment of nanoporous structure in novel H2–selective silica–based membranes via integrated gas transport modeling: Membrane development and characterization","authors":"Triantafyllia Grekou ,&nbsp;Dimitrios Koutsonikolas ,&nbsp;George Karagiannakis ,&nbsp;Eustathios S. Kikkinides","doi":"10.1016/j.mseb.2025.119175","DOIUrl":"10.1016/j.mseb.2025.119175","url":null,"abstract":"<div><div>As the world moves toward a low–carbon future, hydrogen (H₂) is playing a key role in sustainable energy strategies, driving research into the development of efficient H₂ separation systems. In this study, a scalable low–temperature (250 °C) chemical vapor deposition (CVD) method using tetraethoxysilane (TEOS) and oxygen was employed to deposit a H₂–selective silica layer on a commercial titania membrane. In contrast to conventional single-stage CVD routes, a novel addition of intermediate ozone (O₃) treatments between deposition steps promoted the formation of a stable, purely inorganic structure by decomposing residual organics and activating the surface for the subsequent deposition. The resulting SiO₂/TiO₂ membrane demonstrated a favorable balance between permeance and selectivity, achieving a H₂ permeance of 1.9 × 10^{– 7}mol m⁻²s⁻¹Pa⁻¹ and a H₂/CO₂ permselectivity of 80.4 at 250 °C. Additionally, a theoretical mass transport model was applied at each modification stage to assess pore structure evolution, identify the dominant transport mechanisms, and advance the understanding of structure–permeation relationship.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119175"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978872","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":"Cu-doped triphasic TiO2 nanocrystalline materials for enhanced visible light photocatalytic activity","authors":"Madhu Prasad P.V,&nbsp;Rajesh Cheruku,&nbsp;Amar Srivatsava,&nbsp;Vijaya Kumar Kambila,&nbsp;M.V.H. Rao","doi":"10.1016/j.mseb.2026.119197","DOIUrl":"10.1016/j.mseb.2026.119197","url":null,"abstract":"<div><div>Titanium dioxide (TiO₂) nanomaterials with mixed-phase compositions are known to outperform single-phase systems in photocatalysis due to improved charge separation at phase junctions. In this work, triphasic TiO₂ nanoparticles containing anatase, rutile, and brookite were synthesized via a low-temperature sol-gel method, and the effect of Cu doping on their structural, optical, and photocatalytic properties were systematically examined. X-ray diffraction and Raman analyses confirmed the stable coexistence of all three phases, with Cu incorporation inducing lattice distortion and macrostrain. FTIR studies revealed enhanced surface hydroxylation and increased oxygen-vacancy-related defects at low Cu concentrations, while higher Cu loadings resulted in partial CuO segregation. UV–Vis diffuse reflectance spectroscopy showed bandgap narrowing in the anatase and rutile phases, leading to enhanced visible-light absorption, whereas the brookite bandgap remained largely unchanged. Photocatalytic degradation of methylene blue under visible-light irradiation achieved a maximum efficiency of 86.1% for 1 wt% Cu-doped TiO₂. This study lies in demonstrating how controlled Cu doping selectively tunes phase-specific electronic states in a triphasic TiO₂ system to maximize visible-light photocatalytic efficiency, highlighting its potential for water purification applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119197"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978867","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":"Interface dipole engineering via TiO2-doped HfO2 interlayers for flat-band voltage modulation in scaled high-k gate stacks","authors":"Han-Fang Shiue ,&nbsp;Hao-Chen Wu ,&nbsp;Kian-Guan Lim ,&nbsp;Chun-Ho Chuang ,&nbsp;Chi-Lin Mo ,&nbsp;Miin-Jang Chen","doi":"10.1016/j.mseb.2026.119182","DOIUrl":"10.1016/j.mseb.2026.119182","url":null,"abstract":"<div><div>In advanced semiconductor technology nodes below 10 nm, precise flat-band voltage (<em>V</em>_<em>FB</em>) control is essential for tuning the threshold voltage. This study systematically investigates the incorporation of Ti-doped HfO₂ (HTO) interlayers into metal-oxide-semiconductor capacitors to modulate <em>V</em>_<em>FB</em> while maintaining favorable electrical performance. A ∼2 nm HTO interlayer was prepared via atomic layer deposition (ALD) supercycles with controlled Ti doping concentrations and strategically positioned within the high-k dielectric stacks. The results reveal that a 50 % Ti-doped HTO interlayer located at the dielectric/Si interface produces the most significant <em>V</em>_<em>FB</em> shift, along with reduced equivalent oxide thickness (EOT) and an acceptable leakage current density. This <em>V</em>_<em>FB</em> modulation is attributed to interface dipole engineering as a result of the difference in electronegativity between Ti–O–Si and Hf–O–Si bonds. Furthermore, <em>V</em>_<em>FB</em> is strongly correlated with the spatial placement of the interlayer: <em>V</em>_<em>FB</em> shifts are pronounced when the HTO interlayer is positioned at the dielectric/Si or metal/dielectric interfaces, but minimal when embedded within the HfO₂ matrix due to the cancellation of opposite dipoles. This study establishes an effective and scalable approach to dipole modulation in high-k gate stacks, enabling precise <em>V</em>_<em>FB</em> control and EOT scaling for future low-power applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119182"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978873","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":"Fabrication of self-doped TiO2-coated zeolite nanostructure with high surface area for efficient photocatalytic degradation of organic contaminant","authors":"Jianfang Qian ,&nbsp;Jiapeng Mao ,&nbsp;Ziyang Zheng ,&nbsp;Chengle Wang ,&nbsp;Dandan Xiang ,&nbsp;Dani S. Assi ,&nbsp;Yanting Tang ,&nbsp;Quanhui Guo","doi":"10.1016/j.mseb.2025.119169","DOIUrl":"10.1016/j.mseb.2025.119169","url":null,"abstract":"<div><div>Degrading organic pollutants in water has grown increasingly urgent nowadays. Photocatalytic degradation technology shows great promise in organic pollutant degradation, though practical implementation is still challenging. In this work, self-doped TiO₂ nanoparticles and high-surface-area Ti³⁺-TiO₂-coated zeolite nanostructures were prepared by a combined sol-gel/calcination method. The incorporation of zeolite dramatically expanded surface area while generating additional reactive sites, thereby improving photocatalytic performance. The synthesized zeolite@Ti³⁺-TiO₂ photocatalyst demonstrated the highest photocatalytic tetracycline degradation performance under visible light. The relevant rate constant was 0.0423 min⁻¹, approximately 6.61 times that of the Ti³⁺-TiO₂ sample, primarily due to the formation of micro-mesoporous structures and high dispersion of the Ti³⁺-TiO₂ over the zeolite for promoted surface reactions and charge separation. Current work highlights the significant advantages of rationally designed zeolite-based nanostructures for high-performance semiconductor photocatalysis.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119169"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928181","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":"Photocatalytic and anti-bacterial activity of Y3+ doped ZnO thin films deposited by simplified spray pyrolysis technique","authors":"R. Balaji ,&nbsp;P. Seenuvasakumaran ,&nbsp;A. Ubaithulla Baig ,&nbsp;R. Anandhi ,&nbsp;K. Saravanakumar ,&nbsp;A. Vinodhini ,&nbsp;K. Saravanan ,&nbsp;N. Jabena Begum","doi":"10.1016/j.mseb.2026.119188","DOIUrl":"10.1016/j.mseb.2026.119188","url":null,"abstract":"<div><div>The present study used a simplified spray pyrolysis technique to successfully deposit pure ZnO and yttrium-doped ZnO (YZO) thin films with 2, 4 and 6 at. % of Y concentrations on glass substrates under ambient conditions. The impact of yttrium incorporation on the films' morphological, optical, structural, photocatalytic, and antibacterial characteristics was thoroughly investigated. The substitution of Y³⁺ into the ZnO lattice was demonstrated by XRD analysis, which verified that all films crystallized in the hexagonal wurtzite phase without secondary Y-containing impurities. Defect-induced band tailing was confirmed by optical measurements, which revealed higher Urbach energies, decreased band gap, and increased visible absorption with increasing dopant concentration. Significant morphological evolution was shown by SEM and TEM results, displaying a distinctive tetrapod chain-like structure with a larger surface area. Due to improved charge separation and defect-assisted ROS generation, photocatalytic degradation of methylene blue showed that the 4 at. % YZO film had the highest degradation efficiency. Antibacterial tests against <em>E. coli</em>, <em>Klebsiella pneumoniae</em>, <em>Staphylococcus aureus</em>, and <em>Bacillus subtilis</em> further validated the YZO samples' superior performance. The results obtained from structural, optical, photocatalytic, and antibacterial studies highlighted that the 4 at. % of YZO thin film can be suitable for environmental applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119188"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928276","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":"Exploring the reaction mechanisms of the cutting-edge hydrogen bond donor Allantoin-isocyanate precursor, with a comparative analysis utilizing density functional theory (DFT)","authors":"Jigneshkumar Thakkara ,&nbsp;Nishant Pandya ,&nbsp;Kalpana Devi ,&nbsp;K.K. Singh","doi":"10.1016/j.mseb.2025.119153","DOIUrl":"10.1016/j.mseb.2025.119153","url":null,"abstract":"<div><div>Researchers are investigating self-healing polymers inspired by the regenerative properties observed in biological systems, with a particular focus on allantoin hexamethylene diisocyanate (APY), synthesized via condensation polymerization. Thermogravimetric analysis (TGA) confirmed the organic nature of APY. Fourier-transform infrared spectroscopy (FTIR) indicated a 92 % correlation with allantoin reference spectra, while Nuclear Magnetic Resonance (NMR) analysis revealed an allantoin content of 89.73 %. Furthermore, flow injection mass spectrometry (FIMS) detected soluble allantoin, and Pyrolysis Gas Chromatography/Mass Spectrometry (Py-GC/MS) identified the presence of hexamethylene diisocyanate (HDI). Structural optimizations of allantoin and HDI were performed using Gaussian 16 software, employing density functional theory (DFT), which demonstrated that these compounds could function as both hydrogen bond donors and acceptors.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119153"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145883409","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":"Engineering hierarchical (Ce/Co/Ni) CCN-LTH ternary hydroxide hybrids for next-generation supercapacitor electrode applications","authors":"Manjuparkavi Murugan ,&nbsp;Ponnusamy Sasikumar ,&nbsp;Latha Marasamy ,&nbsp;Pitchaimani Veerakumar ,&nbsp;Prabhu Sengodan ,&nbsp;Rajagembu Perumal","doi":"10.1016/j.mseb.2025.119140","DOIUrl":"10.1016/j.mseb.2025.119140","url":null,"abstract":"<div><div>Polymer-embedded transition metal-based electrodes with excellent specific capacitance have received considerable attention for energy storage applications in recent years. Layered Hydroxides exhibit significant potential for enhancing the performance of supercapacitors (SCs) due to their efficient interlayer ion transport and redox reactions. The limited number of active sites and the uniform distribution of metal species impede enhancements in capacity performance. In this study, polyvinylpyrrolidone (PVP) is effectively hierarchical network resembling a flower of ternary metal LTH nanostructure through site-specific co-precipitation, leading to enhanced SCs performance. The PVP@Ce/Co/Ni-LTH (PVP@CCN-LTH) hybrid retains the stacked nanolayered porous structure values of 20.8 m² g⁻¹ characteristic of ternary metal LTH, while keeping the interlayer ion transfer impedance at a minimal level. The incorporated polymer PVP molecules play a vital role, enabling the additional active sites, which improve electrochemical properties, including electrical conductivity, capacitive performance, and cycling stability. Structural, spectral, morphological, surface elemental binding energies, surface area properties, and the electrochemical performance of the fabricated electrodes are studied with appropriate characterization tools, and the obtained results are discussed. The developed Hybrid Supercapacitor (HSC) material demonstrated an exceptional Specific capacity of 350.5 mAh g⁻¹ (reaching up to 2524 F g⁻¹) at a current density of 4 A g⁻¹ in PVA-KOH hydrogel electrolyte. The remarkable cycling stability (98.4 % retention after 9000 charge-discharge cycles) may be attributed to the unique characteristics and synergistic effects of multi-LTHs. The PVP@CCN_2:2:1-LTH/AC electrodes exhibit a high-power density (PD) of 12,800 W kg⁻¹ and Energy density (ED) of 30.5 Wh kg⁻¹ with remarkable stability. The fabricated asymmetric supercapacitor proves that the PVP@CCN_2:2:1-LTH/AC has the viable potential for commodification in the field of Hybrid Energy efficiency SCs.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119140"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978870","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":"Enhanced sinterability of Ba3MoNb0.95Zr0.05O8.475 oxide ion conductor by adding K2CO3","authors":"Lulu Jiang ,&nbsp;Wenqi Lei ,&nbsp;Xiaoyun Miao ,&nbsp;Xiulin Wang ,&nbsp;Yongcun Liu ,&nbsp;Yuanshuang Zheng ,&nbsp;Xiaofeng Ye ,&nbsp;Donglin Han","doi":"10.1016/j.mseb.2026.119208","DOIUrl":"10.1016/j.mseb.2026.119208","url":null,"abstract":"<div><div>Ba₃MoNbO_8.5-based materials are an attractive class of hexagonal perovskite-derived oxide ion conductors, and the oxide ion conductivity can be increased to 0.012 Scm⁻¹ at 700 °C by doping Zr to form the composition of Ba₃MoNb_0.95Zr_0.05O_8.475 (BMNZ5). However, BMNZ5 shows lower relative density around 69% after sintering at 1200 °C. Increasing the temperature to 1300 °C densifies the sample but unfortunately results in the formation of a BaMoO₄ second phase. Interestingly, adding K₂CO₃ leads to the reduced temperature forming the BMNZ5 phase, and the relative density increases to 89% by adding 5 mol% K₂CO₃. Although the conductivity decreases slightly, adding K₂CO₃ leads to an acceptable balance between the relative density and conductivity. The samples added with 1.0, 2.5 and 5.0 mol% K₂CO₃ show reasonably high total conductivity of 0.0079, 0.0062 and 0.0077 Scm⁻¹ at 700 °C in a dry Ar-20% O₂ atmosphere. No proton conduction was detected in both the pristine and 2.5 mol% K₂CO₃-added compositions by the H₂O/D₂O isotope effect measurements.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119208"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978864","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":"Hot injection synthesis parameters effects on the structure, crystallinity, microstructure and optical properties of Sb2S3 nanopowders","authors":"Nikola Ilić ,&nbsp;Ivana Validžić ,&nbsp;Tanja Barudžija ,&nbsp;Sanja Stevanović","doi":"10.1016/j.mseb.2025.119165","DOIUrl":"10.1016/j.mseb.2025.119165","url":null,"abstract":"<div><div>Antimony sulfide amorphous and crystalline nanoparticles were synthesized by the hot-injection method. X-ray diffraction analysis confirmed the gradual growth and crystallization of amorphous particles with synthesis time and temperature. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) revealed spherical shapes of amorphous nanoparticles of 10–50 nm in radius and clothespin-shaped crystalline particles with a radius and length of several micrometers and an approximate aspect ratio of 2.5. Diffuse reflectance spectroscopy (DRS) implied a 1.8–2.0 eV, size-tunable, indirect band gap for the amorphous phase and a smaller, ∼1.6 eV, direct band gap for the crystalline phase. Thermogravimetry (TG/DSC) and Fourier-transform infrared (FTIR) spectroscopy studies show that amorphous powders have a low concentration of organic molecules, which are primarily eliminated during crystallization. The powders were spray deposited as an absorber layer in ITO/TiO₂ + Sb₂S₃/P3HT/I₂(I⁻)/Al-composed solar cells, giving up to 1.2 % energy conversion efficiency when illuminated by a 290 W/m² tungsten lamp as a source.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119165"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145883408","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}