Materials Letters最新文献

Sulfur@N/P dual-doped porous carbon nanofibers as the cathode for potassium-sulfur batteries Sulfur@N/P双掺杂多孔碳纳米纤维作为钾硫电池的阴极

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-07-12 DOI: 10.1016/j.matlet.2025.139097

Yuyang Qin , Dandan Yu , Jingyun Mou , Guojie Liu , Xinman Tu , Linhe Li , Yonggen Jin , Lu Shi , Wenlong Song , Da Chen

引用次数: 0

Fabrication of multi-metal alloy nanocatalysts using microplasma electrolytic oxidation for high-efficiency catalysis 微等离子体电解氧化制备高效多金属合金纳米催化剂

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-07-11 DOI: 10.1016/j.matlet.2025.139091

Jun Zhou , Yuqi Qin , Yue Yin , Liwen Ma , Zhaodong Li , Sitong Liu , Xiaoqing Cao , Yan Wang

{"title":"Fabrication of multi-metal alloy nanocatalysts using microplasma electrolytic oxidation for high-efficiency catalysis","authors":"Jun Zhou , Yuqi Qin , Yue Yin , Liwen Ma , Zhaodong Li , Sitong Liu , Xiaoqing Cao , Yan Wang","doi":"10.1016/j.matlet.2025.139091","DOIUrl":"10.1016/j.matlet.2025.139091","url":null,"abstract":"<div><div>Multimetallic alloy nanocatalysts are of significant interest due to their superior catalytic properties, offering substantial advantages for chemical conversion and petroleum refining applications. However, conventional powder-based multimetallic catalysts often face issues such as non-uniform dispersion of active components and challenging catalyst recovery. In this study, we propose a novel in-situ synthesis method for multimetallic alloy nanocatalysts via microplasma electrolytic oxidation (MPEO) on helical magnesium and aluminum wire substrates. This microplasma-based approach generates localized high temperatures and pressures conditions, effectively decomposing precursor salts into uniformly dispersed alloy nanoparticles. Specifically, two multimetallic alloy nanocatalysts; Fe<sub>3.4</sub>Co<sub>2.7</sub>Ni<sub>3.3</sub>Ru<sub>1.3</sub>Pd<sub>0.74</sub> and Fe<sub>2.7</sub>Co<sub>2.9</sub>Ni<sub>2.9</sub>Ru<sub>2.3</sub>Pt<sub>0.2</sub>, were successfully synthesized on magnesium and aluminum wire surfaces, respectively. Detailed characterization via scanning electron microscopy (SEM) and transmission electron microscopy (TEM) confirmed the porous surface morphology and uniform distribution of active catalytic components. Catalytic performance tests revealed demonstrated exceptional performance; the Fe<sub>3.4</sub>Co<sub>2.7</sub>Ni<sub>3.3</sub>Ru<sub>1.3</sub>Pd<sub>0.74</sub> nanocatalyst exhibited a high acetylene hydrogenation conversion of 99.79 % with selectivity up to 94.99 %, whereas the Fe<sub>2.7</sub>Co<sub>2.9</sub>Ni<sub>2.9</sub>Ru<sub>2.3</sub>Pt<sub>0.2</sub> nanocatalyst demonstrated a hydrogen production rate of 0.197 mL/s during sodium borohydride hydrolysis. These findings highlight the potential of MPEO technique as a promising pathway for fabricating multimetallic alloy nanocatalysts with broad catalytic applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139091"},"PeriodicalIF":2.7,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144611745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The role of interphase on the mechanical behavior of Al2O3/Al(OH)3 reinforced Al foams 界面相对Al2O3/Al(OH)3增强泡沫铝力学行为的影响

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-07-10 DOI: 10.1016/j.matlet.2025.139085

J.C. Carranza , L.E. Carranza , I.A. Figueroa , C. Aguilar , I. Alfonso

引用次数: 0

An analysis of FMR signals considering both insulating La-doped YIG and conducting YFeO3 phases 考虑绝缘掺la YIG和导电YFeO3相的FMR信号分析

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-07-10 DOI: 10.1016/j.matlet.2025.138996

F.R. de Souza , J.E. Abrão , E.L.T. França , R. Peña-Garcia , M.H.G. de Miranda , E. Padrón-Hernández

引用次数: 0

Ultra-wideband polarization insensitive metasurface absorber with high angular stability for infrared, visible and ultraviolet regions 超宽带偏振不敏感超表面吸收剂，具有高角稳定性的红外，可见光和紫外线区域

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-07-10 DOI: 10.1016/j.matlet.2025.139084

Taha Sheheryar , Ye Tian , Bo Lv , Sijie Wang , Jin Yuxi , Xuanrui Zhang , Hongxin Qi , Chengyi Wang , Peng Wang , Guanda Wu , Chao Gao , Lei Gao

{"title":"Ultra-wideband polarization insensitive metasurface absorber with high angular stability for infrared, visible and ultraviolet regions","authors":"Taha Sheheryar , Ye Tian , Bo Lv , Sijie Wang , Jin Yuxi , Xuanrui Zhang , Hongxin Qi , Chengyi Wang , Peng Wang , Guanda Wu , Chao Gao , Lei Gao","doi":"10.1016/j.matlet.2025.139084","DOIUrl":"10.1016/j.matlet.2025.139084","url":null,"abstract":"<div><div>This study presents an ultra-wideband metasurface absorber utilizing a metal-dielectric-metal structure for efficient absorption across the infrared, visible and ultraviolet (UV) spectra. The compact absorber with dimensions 30 × 30 × 5 <span><math><mrow><msup><mrow><mi>n</mi><mi>m</mi></mrow><mn>3</mn></msup></mrow></math></span> achieves a high absorption rate exceeding 90 % from 304 THz to 7960 THz (37.7–987 nm) with an average absorption of 97.63 %. The design maintains >97 % absorption in the range of 1920–7272 THz and displays complete polarization insensitivity. It remains highly effective under oblique incidences and sustains absorption averages of 96.43 % at 50° and 83.29 % at 70°. Compared to existing designs, the proposed absorber not only provides exceptional broadband coverage but also maintains superior efficiency across a wider range of wavelengths which makes the absorber a promising candidate for photodetectors, sensing energy harvesting and stealth applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139084"},"PeriodicalIF":2.7,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Utilization of Areca leaf sheath fiber for polymer composite development: Dynamic analysis 槟榔叶鞘纤维在高分子复合材料开发中的应用：动态分析

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-07-09 DOI: 10.1016/j.matlet.2025.139079

M.G. Madhu , Kishor Budda

引用次数: 0

Formation of silver molecular clusters and nanoparticles in silicate glass by an electron beam without post-processing 未经后处理的电子束在硅酸盐玻璃中形成银分子团簇和纳米颗粒

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-07-09 DOI: 10.1016/j.matlet.2025.139082

D.A. Sokolova , O.A. Podsvirov , V.B. Bondarenko , A.V. Arkhipov , A.E. Ieshkin , A.A. Tatarintsev , A.I. Lihachev , A.V. Nashchekin , A.V. Myasoedov

引用次数: 0

Optimized preparation of MoS2/C nanosheets for enhanced sodium-ion battery anode 增强型钠离子电池负极MoS2/C纳米片的优化制备

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-07-09 DOI: 10.1016/j.matlet.2025.139083

Zhi Chen, Chensi Yu, Cui Wang, Hongkun Lu

引用次数: 0

Smart hydrogel fibers for sensing, energy conversion, and storage 智能水凝胶纤维传感，能量转换和存储

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-07-09 DOI: 10.1016/j.matlet.2025.139065

Jie Zhang , Cunzhen Geng , Maodong Fu , Qiaoli Chang , Zhixin Xue

引用次数: 0

Crystallographic engineering of AlN films via N2/(Ar + N2) modulation: achieving hydrogen-resistant stability in high-pressure hydrogen systems 通过N2/(Ar + N2)调制的AlN薄膜的晶体学工程：在高压氢系统中实现耐氢稳定性

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-07-09 DOI: 10.1016/j.matlet.2025.139071

Ye Zhang , Wanliang Zhang , Kaiyu Zhang , Xin Liu , Zheye Liu , Zhiyuan Feng , Yuxiao , Chengshuang Zhou , Lin Zhang , Jinyang Zheng

{"title":"Crystallographic engineering of AlN films via N2/(Ar + N2) modulation: achieving hydrogen-resistant stability in high-pressure hydrogen systems","authors":"Ye Zhang , Wanliang Zhang , Kaiyu Zhang , Xin Liu , Zheye Liu , Zhiyuan Feng , Yuxiao , Chengshuang Zhou , Lin Zhang , Jinyang Zheng","doi":"10.1016/j.matlet.2025.139071","DOIUrl":"10.1016/j.matlet.2025.139071","url":null,"abstract":"<div><div>Solving the operational stability of load sensors and other devices in high-pressure hydrogen environments is one of the key factors for the development of hydrogen energy. This study fabricated Cr/AlN bilayer films on 316L stainless steel via closed-field unbalanced magnetron sputtering ion plating (CFUBMSIP), systematically investigating the influence of N<sub>2</sub>/(Ar + N<sub>2</sub>) ratios on the microstructure evolution and high-pressure hydrogen resistance of AlN layers. The analysis of the research results shows that: (1) Nitrogen proportion critically governs AlN crystallographic characteristics – amorphous structure with elevated roughness (Ra = 19.6 nm) forms at 50 % N<sub>2</sub>, while 33 % N<sub>2</sub> induces dense (100)-oriented crystallization with peak deposition rate (6.05 nm/min) and ultra-smooth surface (Ra = 2.5 nm). Further reducing N<sub>2</sub> to 25 % triggers (100) → (111) preferential orientation transition. (2) Under 12 MPa H<sub>2</sub> environment, both (100)- and (111)-oriented AlN films demonstrate exceptional insulation stability (≪3% resistance fluctuation), contrasting sharply with amorphous counterparts showing severe stability degradation due to hydrogen-induced defect state proliferation. By establishing quantitative correlations between gas composition, crystalline orientation, and functional performance, this work provides fundamental insights for engineering robust AlN insulating coatings in high-pressure hydrogen energy systems.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139071"},"PeriodicalIF":2.7,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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