Materials Science and Engineering: B最新文献

{"title":"Synthesis of recyclable pectin-based nanofibers modified with polyvinyl alcohol and their adsorption of copper ions","authors":"Yuhao Wu ,&nbsp;Xiaoqing Deng ,&nbsp;Jiawei Liu ,&nbsp;Jiancheng Huang ,&nbsp;Jianxin Liu ,&nbsp;Xiaolei Zhang ,&nbsp;Yue Lu ,&nbsp;Xiang Li","doi":"10.1016/j.mseb.2025.118831","DOIUrl":"10.1016/j.mseb.2025.118831","url":null,"abstract":"<div><div>This study utilized pectin (Pec) and polyvinyl alcohol (PVA) as matrix materials, with glutaraldehyde (GA) as the crosslinking agent, to fabricate Pec/PVA composite nanofibers via electrospinning for Cu²⁺ removal. Characterization by SEM, FTIR, and XRD revealed that increasing the pectin ratio reduced the fiber diameter, and GA crosslinking imparted excellent water resistance to the fibers. Fitting results from adsorption kinetics, isotherms, and thermodynamics indicated that the adsorption process was exothermic, dominated by chemical adsorption and monolayer coverage. The primary mechanisms were identified as ion exchange and coordination, accompanied by electrostatic interactions. The material exhibited good mechanical properties and biocompatibility, retaining 80 % of its adsorption capacity after 5 regeneration cycles. In summary, the prepared Pec/PVA nanofibers combine excellent processability with high adsorption activity, demonstrating significant potential for application in removing heavy metals from wastewater.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118831"},"PeriodicalIF":4.6,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117843","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":"Structural, magnetic, and electrical property modulation in ZnO and V- and Cr-doped ZnO films via defect engineering","authors":"Abdelhamid Ait M’hid ,&nbsp;Guojian Li ,&nbsp;Zhe Wang ,&nbsp;Baoze Zhang ,&nbsp;Shang Sun ,&nbsp;Mourad Boughrara ,&nbsp;Mohamed Kerouad ,&nbsp;Qiang Wang","doi":"10.1016/j.mseb.2025.118818","DOIUrl":"10.1016/j.mseb.2025.118818","url":null,"abstract":"&lt;div&gt;&lt;div&gt;This study presents a comprehensive investigation of the structural, microstructural, morphological, magnetic, and electrical transport properties of undoped ZnO and transition metal (TM)-doped ZnO films incorporating vanadium (V) and chromium (Cr) at doping levels of 0.2, 0.4, and 0.6 at.%. The films were deposited on glass substrates using RF/DC magnetron co-sputtering technique and thoroughly characterized via X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), energy-dispersive X-ray spectroscopy (EDX), vibrating sample magnetometry (VSM), and Hall effect measurements. XRD analysis confirmed the formation of single-phase wurtzite ZnO with no secondary phases. The lattice parameter &lt;span&gt;&lt;math&gt;&lt;mi&gt;a&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt; decreased from 3.255 Å (undoped) to 3.234 Å (0.6 at.% V) and 3.238 Å (0.6 at.% Cr), indicating substitutional incorporation of smaller V&lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; and Cr&lt;sup&gt;3＋&lt;/sup&gt; ions. Crystallite size decreased from 17.149 nm (undoped) to 11.251 nm (0.6 at.% V) and 12.037 nm (0.6 at.% Cr), accompanied by increased strain and dislocation density. SEM and AFM studies revealed significant grain refinement and surface roughness evolution, with RMS roughness increasing to 14.3 &lt;span&gt;&lt;math&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; 2.3 nm for V-doped films and 14.9 &lt;span&gt;&lt;math&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; 1.5 nm for Cr-doped films, compared to 12.1 &lt;span&gt;&lt;math&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; 1.1 nm for undoped ZnO. Magnetic measurements confirmed room-temperature ferromagnetism, with maximum saturation magnetization (&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;) values of 5.41 emu/cm&lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; for 0.6 at.% V and 7.10 emu/cm&lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; for 0.4 at.% Cr. Remanent magnetization (&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;r&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;) followed a similar trend, consistent with the formation of bound magnetic polarons (BMPs) mediated by oxygen vacancies. Hall effect measurements revealed &lt;span&gt;&lt;math&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;-type conductivity in all samples, with carrier concentration decreasing from &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;×&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;15&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; cm&lt;sup&gt;−3&lt;/sup&gt; (undoped) to &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mo&gt;×&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;13&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; cm&lt;sup&gt;−3&lt;/sup&gt; (0.6 at.% V) and &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;mo&gt;×&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;14&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; cm&lt;sup&gt;−3&lt;/sup&gt; (0.6 at.% Cr). A corresponding increase in resistivity was also observed upon doping, confirming the role of V and Cr as acceptor-like defects. Tra","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118818"},"PeriodicalIF":4.6,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154282","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":"Impact of CeO2 ceramic nanoparticles on corrosion and mechanical properties of composite coatings developed with electroless deposition method","authors":"Mohammad Farhan ,&nbsp;Osama Fayyaz ,&nbsp;Muddasir Nawaz ,&nbsp;Jolly Bhadra ,&nbsp;Noora J. Al-Thani ,&nbsp;R.A. Shakoor","doi":"10.1016/j.mseb.2025.118813","DOIUrl":"10.1016/j.mseb.2025.118813","url":null,"abstract":"<div><div>Corrosion remains one of the most critical challenges limiting the durability and service life of metallic components. Traditional coatings often struggle to provide long-term protection while maintaining sufficient mechanical strength. To address this, the present study investigates the Ni-P nanocomposite coatings developed by electroless deposition process, and their impact by adding cerium oxide (CeO₂) nanoparticles (NPs) at two concentrations, 0.25 and 0.50 g/L. The introduction of CeO₂ NPs into the Ni-P matrix improved the morphology by forming a more compact and uniform coating structure. Moreover, the CeO₂ nanoparticles reinforcement strengthened the coating, making it more durable and resistant to wear and abrasion. The presence of inert CeO₂ NPs effectively reduced the active area exposed to corrosive agents and improved the corrosion resistance properties of the coatings. The protection efficiency of 98.44 % was achieved for the Ni-P-0.25CeO₂ nanocomposite coating, which is a significant enhancement compared to uncoated carbon steel.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118813"},"PeriodicalIF":4.6,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154283","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":"Template-activation coupled synthesis of petroleum pitch-based activated carbon for enhanced ammonia adsorption","authors":"Gaoqi Han ,&nbsp;Yang Hao ,&nbsp;Hao Wang ,&nbsp;Rui Han ,&nbsp;Qingling Liu","doi":"10.1016/j.mseb.2025.118798","DOIUrl":"10.1016/j.mseb.2025.118798","url":null,"abstract":"<div><div>The effective treatment of ammonia in industrial exhaust gases has emerged as a critical environmental challenge worldwide. Activated carbon materials, owing to their substantial specific surface area and tunable surface chemistry, have been widely employed for ammonia adsorption. However, their adsorption capacity is fundamentally constrained by the predominant physical adsorption mechanism. To overcome this limitation, we developed a novel metal chloride-loaded petroleum pitch-based activated carbon adsorbent through an integrated templating and activation approach. The optimized material demonstrated exceptional ammonia adsorption performance, achieving a maximum capacity of 47.81 mg/g with an extended breakthrough time of 106.8 min. Comprehensive characterization through BET surface area analysis, XRD, and SEM revealed that the templating method generated abundant ordered mesopores, while the activation process created a hierarchical pore structure containing both micropores and mesopores. This unique porous architecture facilitated effective metal chloride dispersion and enhanced ammonia diffusion kinetics, resulting in significantly improved adsorption performance.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118798"},"PeriodicalIF":4.6,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117498","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":"Waste-to-resource strategy: MnOx - modified pine biochar for Cr(VI) ions removal from water","authors":"Shilpi Agarwal,&nbsp;Shikha Wadhwa,&nbsp;Shailey Singhal,&nbsp;Ashmeet Bhogal","doi":"10.1016/j.mseb.2025.118808","DOIUrl":"10.1016/j.mseb.2025.118808","url":null,"abstract":"<div><div>The study aims to address the mitigation of Cr(VI) contamination in water by the use of biochar-MnO_x composites. The biochar was prepared from pine needle waste, a significant contributor to forest fires in the hilly regions of India. The biochar was alkali-treated and modified with aqueous KMnO₄ solution to prepare APB-MnO_x composites. These composites were characterized using FTIR, XRD, XPS, FE-SEM, EDX, and BET surface area analysis, confirming successful incorporation of MnO_x within biochar microstructure. Batch adsorption studies revealed that among all composites, APB-M2 demonstrated the highest removal efficiency of 98.3 % for 100 ppm Cr(VI) at optimized conditions (pH 2, 0.3 g adsorbent dose, 90 min). Adsorption isotherm studies revealed that Cr(VI) adsorption on APB-M2 adhered to the Langmuir model (homogeneous adsorption mechanism) with a maximum adsorption capacity of ∼70 mg/g. The adsorption mechanism is discussed emphasizing the role of positively charged surface in adsorption process and the reduction of Cr(VI) to Cr(III) by MnO_x in APB-M2 adsorbent. This research holds significance in mitigating pine needle waste while providing an efficient adsorbent for Cr(VI) removal from water.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118808"},"PeriodicalIF":4.6,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117845","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":"Constructing “flake-ball” network architectures via facile strategies for enhanced thermal conductivity in polyurethane composites","authors":"Lei Ma,&nbsp;Shuyan Xu","doi":"10.1016/j.mseb.2025.118799","DOIUrl":"10.1016/j.mseb.2025.118799","url":null,"abstract":"<div><div>To meet thermal management demands of 5G/high-power electronics and overcome the processing limitations of conventional polymer composites, we fabricated PDA-BNNSs/APTES-Al₂O₃/CNF/WPU (BACW) composites via doctor-blade method. A hybrid filler system with modulated mass ratios (at constant total loading) combined polydopamine-functionalized BNNSs (PDA-BNNSs) and APTES-grafted Al₂O₃ (APTES-Al₂O₃). Cellulose nanofiber (CNF) enabled interfacial bridging and shear-flow-induced assembly, constructing a 3D interpenetrating “flake-ball” thermal network within waterborne polyurethane (WPU). At a PDA-BNNSs/APTES-Al₂O₃ ratio of 1:2.5, the BACW composite achieved a through-plane thermal conductivity (TC) of 0.712 ± 0.0068 W/(m·K) − a 282.8 % enhancement compared to pure WPU (0.186 ± 0.0084 W/(m·K)) − and outperformed the CNF-free BAW composite (0.621 ± 0.0139 W/(m·K)). Finite element simulations validated these results. As a thermal interface material for LEDs, BACW reduced the peak temperature to 57 °C (compared to 74.2 °C for WPU) within 1 min and accelerated cooling. This synergy of “interface modification-structure design-process optimization” provides a paradigm for engineering applicable high-thermal-conductivity thermal interface materials (TIMs).</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118799"},"PeriodicalIF":4.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117499","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":"Mechanisms of high-entropy carbide formation (TiVTaNbW)C via high-energy milling: structural, chemical, and spectroscopic analysis","authors":"Anderson C. Marques ,&nbsp;Thalita Q. Silva ,&nbsp;Pâmala S. Vieira ,&nbsp;Celmo Hudson Reis Paula ,&nbsp;Maria J.S. Lima ,&nbsp;Rubens M. Nascimento ,&nbsp;Marcello Filgueira ,&nbsp;Uílame U. Gomes ,&nbsp;Meysam Mashhadikarimi","doi":"10.1016/j.mseb.2025.118787","DOIUrl":"10.1016/j.mseb.2025.118787","url":null,"abstract":"<div><div>This study reports a two-step high-energy milling (HEM) route for synthesizing equimolar high-entropy carbide (TiVTaNbW)C powders directly from elemental metals and graphite, without post-milling heat treatments. In the first stage, equiatomic Ti_0.2V_0.2Ta_0.2Nb_0.2W_0.2 alloys were produced by milling for 6, 12, and 18 h; in the second stage, the alloys were milled with graphite (1:1 M ratio) for 6 and 12 h at 500 rpm. The powders were characterized by SEM/EDS, XRD, FTIR, and TOC analysis. XRD confirmed the presence of the high-entropy carbide phase along with minor intermetallic and binary carbide residues. FTIR revealed metal–carbon bonding and surface hydroxyl/carbonate species, consistent with mild surface oxidation during milling. TOC quantified 6.549 wt% C versus the theoretical 9.74 wt%, evidencing a carbon deficit that may contribute to the residual phases. Prolonged milling enhanced elemental homogeneity and reduced crystallite size. These findings confirm the successful formation of a high-entropy carbide phase, demonstrating the potential of this synthesis method for producing homogeneous carbide powders.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118787"},"PeriodicalIF":4.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117844","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":"Concentration-dependent study of Ga₂O₃/FTO bilayers: structural, optical, and morphological tuning for optoelectronic applications","authors":"Mehran Vaezi ,&nbsp;Ali shirpay ,&nbsp;M.M. Bagheri-Mohagheghi","doi":"10.1016/j.mseb.2025.118823","DOIUrl":"10.1016/j.mseb.2025.118823","url":null,"abstract":"<div><div>This study systematically investigates the structural, morphological, elemental, and optical properties of Ga₂O₃/FTO bilayer thin films deposited with varying Ga₂O₃ precursor concentrations (0.1, 0.2, and 0.4 M) for optoelectronic applications. Comprehensive characterization using X-ray diffraction (XRD) reveals the dominant (200) plane in both FTO and bilayer structures, while energy-dispersive X-ray spectroscopy (EDS) confirms uniform bilayers with Ga content varying from 11.73 wt% (0.1 M) to 21.9 wt% (0.4 M). Scanning electron microscopy (SEM) demonstrates that higher precursor concentrations yield smoother Ga₂O₃ layers (12.04 nm particles at 0.4 M) with thicknesses up to 2.74 μm, though Urbach energy analysis indicates increased disorder (0.63–0.91 eV). Optical studies show strong UV absorption below 360 nm, with tunable transmittance (60–85 % in visible range) and consistent band gaps (∼4.55 eV) across all concentrations. The bilayer's combination of FTO's conductivity and Ga₂O₃’s UV sensitivity, coupled with its structural stability, makes it particularly suitable for UV photodetectors and transparent electrodes in harsh environments. These findings provide critical insights for optimizing Ga₂O₃/FTO bilayers for next-generation optoelectronic devices.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118823"},"PeriodicalIF":4.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117841","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":"A facile high-temperature mechanochemical preparation of zinc ferrite powder for microwave absorption","authors":"Mingzhe Liu ,&nbsp;Bo Wang ,&nbsp;Yuanzhao Hou ,&nbsp;Yujiang Wang ,&nbsp;Binchuan Li ,&nbsp;Daxue Fu ,&nbsp;Jianshe Chen ,&nbsp;Kuiren Liu ,&nbsp;Tao Wan ,&nbsp;Qing Han ,&nbsp;Xudong Lu ,&nbsp;Cean Guo ,&nbsp;Shicheng Wei","doi":"10.1016/j.mseb.2025.118812","DOIUrl":"10.1016/j.mseb.2025.118812","url":null,"abstract":"<div><div>Microwave absorbing materials (MAMs) of the ferrite type are crucial for resisting electromagnetic radiation. This work proposed a novel high-temperature mechanochemical method (HTMC) to prepare zinc ferrite (ZnFe₂O₄). The effects of key process parameters on the microstructure and properties of ZnFe₂O₄ were investigated. The results indicate that the electromagnetic and microwave absorption (MA) performances can be influenced by the crystallization and dispersion degree of ZnFe₂O₄. Meanwhile, its MA originates from the good synergy between its dielectric losses (dipole polarization, interfacial polarization, conductive loss) and magnetic losses (eddy current loss, natural resonance, exchange resonance). The HTMC achieves the coupling effect of mechanical force and high-temperature, refining particles while promoting the reaction process. It not only effectively optimizes reaction conditions and shortens the reaction process, but also enables large-scale preparation. This work enriches the existing strategies for the preparation of high-performance ferrite-type MAMs and provides promising insight for engineering applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118812"},"PeriodicalIF":4.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117840","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":"Maneuvering edge passivation of armchair BeN4 nanoribbons for efficient nanoscale interconnects","authors":"L. Ponvijayakanthan ,&nbsp;Neeraj K. Jaiswal ,&nbsp;Haranath Ghosh","doi":"10.1016/j.mseb.2025.118789","DOIUrl":"10.1016/j.mseb.2025.118789","url":null,"abstract":"<div><div>This study investigates the influence of edge passivations of armchair BeN<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span> nanoribbons with F, O, and -OH using density functional theory based calculations. Our results show that Be-edges of nanoribbons can be passivated with the investigated functional elements/groups, while N-edges remain chemically inert. Electronic structure analysis revealed that F- and OH-passivation eliminated Be atom edge states, shifting from edge-states to bulk-states dominated conduction. Quantum transport calculations indicate that Be-edge modes contribute significantly to current conduction, with passivation reducing electron current. Additionally, most of the considered nanoribbon configurations exhibit approximately linear current–voltage (I–V) characteristics. Analysis of the equivalent RLC circuit for interconnects shows that F-passivated mixed-edge nanoribbons can serve as high-speed interconnects in nanoscale devices due to minimal intrinsic propagation delay (<span><math><mo>∼</mo></math></span> 4 to <span><math><mrow><mn>6</mn><mspace></mspace><mi>μ</mi><mi>s</mi></mrow></math></span>). Thus, our findings provide valuable insights for experimental efforts aimed at developing functional devices based on nitrogen-rich armchair BeN<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span> nanoribbons.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"323 ","pages":"Article 118789"},"PeriodicalIF":4.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105596","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}