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Tailoring dielectric properties of poly(arylene ether nitrile) via bisphthalonitrile prepolymer morphology control 通过控制双苯二腈预聚物的形态来裁剪聚芳醚腈的介电性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-08-29 DOI: 10.1016/j.matlet.2025.139420
Han Xu, Liang He, Jinghui Zhang, Shuling Liu, Xiaobo Liu, Lifen Tong
{"title":"Tailoring dielectric properties of poly(arylene ether nitrile) via bisphthalonitrile prepolymer morphology control","authors":"Han Xu,&nbsp;Liang He,&nbsp;Jinghui Zhang,&nbsp;Shuling Liu,&nbsp;Xiaobo Liu,&nbsp;Lifen Tong","doi":"10.1016/j.matlet.2025.139420","DOIUrl":"10.1016/j.matlet.2025.139420","url":null,"abstract":"<div><div>With the development of electronic devices to high frequency and miniaturization, the insufficient voltage resistance of insulating polymers has become a key bottleneck. Here, a morphological gradient of bisphthalonitrile (BPh) prepolymer was designed to optimize the dielectric properties of polyarylene ether nitrile (PEN). Specifically, BPh prepolymers with different morphologies were prepared by the high-temperature solvothermal method (160 ℃): 1 h to generate a sheet structure, 3 h to form a lamellar-spherical mixed structure, and 6 h to form a spherical structure. After the composite film was prepared by filling the prepolymer into PEN, the film was then prepared by curing reaction and its dielectric properties were investigated. Results show that breakdown strength of cured composite with sheet prepolymer is 343.11 kV/mm, which is 111.91 % higher than that of pure PEN (161.91 kV/mm). The lamellae-spherical (188.36 kV/mm) and spherical (238.07 kV/mm) structures increased by 16.34 % and 47.03 %, respectively. It means that the sheet structure can effectively disperse the electric field, while the spherical structure has a weak inhibition ability due to the curvature effect. This work provides a new idea for the design of highly insulating polymer films.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"403 ","pages":"Article 139420"},"PeriodicalIF":2.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926453","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
Conductive cobalt-based metal-organic framework on carbon cloth for overall water splitting 导电钴基金属有机骨架碳布整体水分解
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-08-29 DOI: 10.1016/j.matlet.2025.139423
Munzir H. Suliman , Mazen Almahws , Syed Niaz Ali Shah , Tahir Rasheed , Muhammad Usman
{"title":"Conductive cobalt-based metal-organic framework on carbon cloth for overall water splitting","authors":"Munzir H. Suliman ,&nbsp;Mazen Almahws ,&nbsp;Syed Niaz Ali Shah ,&nbsp;Tahir Rasheed ,&nbsp;Muhammad Usman","doi":"10.1016/j.matlet.2025.139423","DOIUrl":"10.1016/j.matlet.2025.139423","url":null,"abstract":"<div><div>A sulfur-doped cobalt-based MOF grown on carbon cloth (CoS/Co-Tri@CC) demonstrated excellent hydrogen and oxygen evolution activity with low overpotentials and high stability. This scalable, cost-effective electrocatalyst offers promising potential for efficient water splitting and sustainable hydrogen production in renewable energy applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"403 ","pages":"Article 139423"},"PeriodicalIF":2.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926522","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
Eco-friendly synthesis and characterization of copper nanoparticles using Thalassia hemprichii seagrass: Evaluation of antioxidant and antibacterial activities 以海草为原料合成纳米铜颗粒及其抗氧化和抗菌活性评价
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-08-29 DOI: 10.1016/j.matlet.2025.139404
Murugeswaran Santhiya Selvam , Pious Soris Tresina , Ramakrishnan Rajalakshmi , Solomon Jeeva , L. Rajeshkumar , Veerabahu Ramasamy Mohan
{"title":"Eco-friendly synthesis and characterization of copper nanoparticles using Thalassia hemprichii seagrass: Evaluation of antioxidant and antibacterial activities","authors":"Murugeswaran Santhiya Selvam ,&nbsp;Pious Soris Tresina ,&nbsp;Ramakrishnan Rajalakshmi ,&nbsp;Solomon Jeeva ,&nbsp;L. Rajeshkumar ,&nbsp;Veerabahu Ramasamy Mohan","doi":"10.1016/j.matlet.2025.139404","DOIUrl":"10.1016/j.matlet.2025.139404","url":null,"abstract":"<div><div>This study investigats the green synthesis of copper nanoparticles (CuNPs) using the aqueous extract from the Thalassia hemprichii, a species of seagrass. Phytochemical analysis of the extract confirmed the presence of various bioactive compounds, including catechins, phenols, quinones, flavonoids, saponins, steroids, tannins, and glycosides. UV–Visible spectroscopy revealed a surface plasmon resonance peak at 277 nm. Fourier-transform infrared spectroscopy confirmed the presence of flavonoids and phenolic compounds. Scanning electron microscopy showed that the CuNPs were spherical in shape, while X-ray diffraction analysis verified their crystalline structure. Atomic force microscopy was used to assess surface topography. The CuNPs exhibited strong antioxidant activity, demonstrated by a high percentage of DPPH radical scavenging. These findings highlight the potential of green-synthesized CuNPs for multifunctional biomedical applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"403 ","pages":"Article 139404"},"PeriodicalIF":2.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004883","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
Development of bioactive PLA nanofiber wound dressings with Hypericum perforatum and zeolite 穿孔连翘与沸石复合生物活性聚乳酸纳米纤维创面敷料的研制
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-08-29 DOI: 10.1016/j.matlet.2025.139384
Seviye Nur Caliskan , Yara Farrah , Nazlican Demircan , Berke Veli Yilmaz , Yigit Furkan Alaca , Esra Pilavci , Zehra Kanli , Elif Kaya , Gulgun Tinaz , Canan Dogan , Oguzhan Gunduz
{"title":"Development of bioactive PLA nanofiber wound dressings with Hypericum perforatum and zeolite","authors":"Seviye Nur Caliskan ,&nbsp;Yara Farrah ,&nbsp;Nazlican Demircan ,&nbsp;Berke Veli Yilmaz ,&nbsp;Yigit Furkan Alaca ,&nbsp;Esra Pilavci ,&nbsp;Zehra Kanli ,&nbsp;Elif Kaya ,&nbsp;Gulgun Tinaz ,&nbsp;Canan Dogan ,&nbsp;Oguzhan Gunduz","doi":"10.1016/j.matlet.2025.139384","DOIUrl":"10.1016/j.matlet.2025.139384","url":null,"abstract":"<div><div>This study presents the development of innovative wound dressings using Poly (Lactic Acid) (PLA) nanofibers functionalised with <em>Hypericum perforatum</em> (HP) extract and natural zeolite (ZEO). Nanofibers were fabricated via electrospinning and characterised. Results revealed that HP and ZEO significantly enhanced the thermal stability, mechanical strength, and biocompatibility of the nanofibers. When in vitro release of HP was analyzed, it was found to be finally released within 18 days. HP and ZEO together were increased the mechanical strength to the value of 1.84 ± 0.53 MPa. This study highlights the synergy of natural bioactive compounds and sustainable materials in creating advanced wound care solutions.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"403 ","pages":"Article 139384"},"PeriodicalIF":2.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997375","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
Enhanced dielectric and magnetic properties of Sr and Co doped barium ferrite nanoparticles by microwave synthesis method 微波合成法增强Sr和Co掺杂钡铁氧体纳米粒子的介电和磁性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-08-29 DOI: 10.1016/j.matlet.2025.139405
Shraddha Agrawal , Azra Parveen , Naveen Kumar Arkoti , Jitendra Bahadur , Mohd Hashim , Sumit Gaur
{"title":"Enhanced dielectric and magnetic properties of Sr and Co doped barium ferrite nanoparticles by microwave synthesis method","authors":"Shraddha Agrawal ,&nbsp;Azra Parveen ,&nbsp;Naveen Kumar Arkoti ,&nbsp;Jitendra Bahadur ,&nbsp;Mohd Hashim ,&nbsp;Sumit Gaur","doi":"10.1016/j.matlet.2025.139405","DOIUrl":"10.1016/j.matlet.2025.139405","url":null,"abstract":"<div><div>The current study investigates the magnetic, electrical, and dielectric characteristics of barium ferrite nanoparticles doped with Sr and Co metals, produced using the microwave gel process. X-ray diffraction (XRD) was employed to analyze the crystalline phases of the prepared materials. The XRD data confirmed that the Sr and Co were successfully incorporated into the BaFe<sub>12</sub>O<sub>19</sub>. The dielectric permittivity and ac conductivity of pristine and doped BaFe<sub>12</sub>O<sub>19</sub> nanoparticles have been measured as a function of frequency and temperature. Compared to pristine barium ferrites, Sr and Co-metal-doped barium ferrite nanoparticles exhibit stronger ferromagnetic behavior and increased magnetization. As Sr and Co metal-doped barium ferrite nanoparticles have improved magnetic and dielectric properties, they may be used in magnetic storage devices and absorbing materials, paving the way for exciting new applications in these fields.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"403 ","pages":"Article 139405"},"PeriodicalIF":2.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926517","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
Bio-based carbon as functional material in sustainable printed electronics 生物基碳在可持续印刷电子中的功能材料
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-08-29 DOI: 10.1016/j.matlet.2025.139424
L. Neumaier , L. Rauter , J. Zikulnig , S. Schmid , C. Unterweger , C. Pretschuh , J. Kosel
{"title":"Bio-based carbon as functional material in sustainable printed electronics","authors":"L. Neumaier ,&nbsp;L. Rauter ,&nbsp;J. Zikulnig ,&nbsp;S. Schmid ,&nbsp;C. Unterweger ,&nbsp;C. Pretschuh ,&nbsp;J. Kosel","doi":"10.1016/j.matlet.2025.139424","DOIUrl":"10.1016/j.matlet.2025.139424","url":null,"abstract":"<div><div>The production and disposal of short-term-use electronics pose significant environmental implications due to intensive resource use, hazardous processing, and growing electronic waste. We present the synthesis of a bio-based carbon ink as a sustainable functional material for printed electronics, demonstrating its application potential as temperature sensor and heater on uncoated paper substrate for the realization of fully bio-based and potentially biodegradable devices. For temperature sensing, a thermal coefficient of resistance of –2.3 * 10<sup>–3</sup> K<sup>−1</sup> was obtained, while the heating element exhibited temperatures of up to 160 °C at 0.5 W.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"403 ","pages":"Article 139424"},"PeriodicalIF":2.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997310","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
Microstructure and electrochemical behavior investigation of carbon fiber hard carbons derived from different precursors for sodium-ion batteries 钠离子电池用不同前驱体碳纤维硬炭的微观结构及电化学行为研究
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-08-29 DOI: 10.1016/j.matlet.2025.139422
Lijuan Cao , Xiaoxuan Lu , Yu Yang , Yun Zhao
{"title":"Microstructure and electrochemical behavior investigation of carbon fiber hard carbons derived from different precursors for sodium-ion batteries","authors":"Lijuan Cao ,&nbsp;Xiaoxuan Lu ,&nbsp;Yu Yang ,&nbsp;Yun Zhao","doi":"10.1016/j.matlet.2025.139422","DOIUrl":"10.1016/j.matlet.2025.139422","url":null,"abstract":"<div><div>A comparative study of the microstructure and sodium storage behaviors of three special hard carbons (HCs) derived from polyacrylonitrile fibers (PANCFs), mesophase pitch fibers (MPCFs) and rayon fibers (RCFs) are carried out for the first time. The results reveal that the MPCF-based HC presents the highest crystallinity, while the amorphous degree and defect contents rise in sequence for the PANCF-based HC and RCF-based HC. Moreover, the RCF-based HC has the richest oxygen functional groups. The electrochemical performance evaluation indicates that the RCF-based HC exhibits much prolonged plateau characteristic below 0.1 V, reaping the highest reversible capacity of 310.8 mAh g<sup>−1</sup> and excellent cycling stability (98.9 % after 200 cycles). This study provides a rewarding attempt for the exploitation of carbon fiber-based HCs in sodium-ion batteries.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"403 ","pages":"Article 139422"},"PeriodicalIF":2.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926518","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
Durable superhydrophobic coating cured at room temperature via moisture for anti-icing 耐久的超疏水涂层在室温下通过湿气固化以防止结冰
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-08-29 DOI: 10.1016/j.matlet.2025.139410
Feng Liu , Junfei Ou , Sheng Liu , Aumber Abbas , Yating Hu , Fajun Wang , Xinzuo Fang , Seyed Farshid Chini , Alidad Amirfazli
{"title":"Durable superhydrophobic coating cured at room temperature via moisture for anti-icing","authors":"Feng Liu ,&nbsp;Junfei Ou ,&nbsp;Sheng Liu ,&nbsp;Aumber Abbas ,&nbsp;Yating Hu ,&nbsp;Fajun Wang ,&nbsp;Xinzuo Fang ,&nbsp;Seyed Farshid Chini ,&nbsp;Alidad Amirfazli","doi":"10.1016/j.matlet.2025.139410","DOIUrl":"10.1016/j.matlet.2025.139410","url":null,"abstract":"<div><div>A room-temperature-cured, single-component superhydrophobic coating was developed using moisture-cured silicone resin and silicon oxide nanoparticles. The spray-applied coating dries within 1 h at 15 °C and 60 % RH, achieving a contact angle of 167° and roll angle of 1.5°, with hardness reaching 4H and adhesion of 4B after 4 h. It maintains a contact angle of ∼ 150° after eight water impact cycles and exhibits comparable durability. Adding carbon black enables photothermal anti-icing properties.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"403 ","pages":"Article 139410"},"PeriodicalIF":2.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997386","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
Ultrafast sodium-ion storage performance of ReS2@rGO anode enabled by defect-to-center diffusion mechanism 缺陷向中心扩散机制下ReS2@rGO阳极的超快钠离子存储性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-08-29 DOI: 10.1016/j.matlet.2025.139419
Yongpeng Cui, Zinuo Cheng, Yajun Wang, Yongfeng Li
{"title":"Ultrafast sodium-ion storage performance of ReS2@rGO anode enabled by defect-to-center diffusion mechanism","authors":"Yongpeng Cui,&nbsp;Zinuo Cheng,&nbsp;Yajun Wang,&nbsp;Yongfeng Li","doi":"10.1016/j.matlet.2025.139419","DOIUrl":"10.1016/j.matlet.2025.139419","url":null,"abstract":"<div><div>ReS<sub>2</sub> materials are regarded as a promising anode material for sodium-ion batteries. However, their practical application is hindered by low electrical conductivity and significant volume expansion, leading to rapid capacity degradation. In this study, a ReS<sub>2</sub>@rGO material is constructed, in which the rGO matrix effectively enhances the electrical conductivity and structural stability of ReS<sub>2</sub>. More importantly, leveraging the large interlayer spacing and abundant defect structure of ReS<sub>2</sub>, the ReS<sub>2</sub>@rGO materials enable faster Na-ion storage through short-distance “defect-to-center” diffusion pathways. Owing to this unique architecture, ReS<sub>2</sub>@rGO demonstrates excellent electrochemical performance, including a high specific capacity (403.8 mAh g<sup>−1</sup>) and remarkable cycling stability (84.1 % retention rate).</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"403 ","pages":"Article 139419"},"PeriodicalIF":2.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922139","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
Harnessing Fenton iron sludge for sustainable degradation of sulfadiazine in wastewater 利用Fenton铁污泥可持续降解废水中的磺胺嘧啶
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-08-29 DOI: 10.1016/j.matlet.2025.139412
Yiyang Liu , Zhinan Wu , Bolin Xue , Muhammad Faheem , Hongxia Yu , Fei Chen
{"title":"Harnessing Fenton iron sludge for sustainable degradation of sulfadiazine in wastewater","authors":"Yiyang Liu ,&nbsp;Zhinan Wu ,&nbsp;Bolin Xue ,&nbsp;Muhammad Faheem ,&nbsp;Hongxia Yu ,&nbsp;Fei Chen","doi":"10.1016/j.matlet.2025.139412","DOIUrl":"10.1016/j.matlet.2025.139412","url":null,"abstract":"<div><div>Iron-carbon composites (FS@WSC-x/y) were synthesized from Fenton sludge (FS) and walnut shells (WS) via hypoxic calcination for sulfadiazine degradation. By varying FS/WS mass ratios (x) and calcination temperatures (y), optimal conditions (x = 1, y = 700 °C) were identified, maximizing degradation efficiency. Reaction conditions were further optimized to 40 μM sulfadiazine, 10 mM H<sub>2</sub>O<sub>2</sub>, pH 2.0, and 0.050 g FS@WSC-1/700, achieving 95 % degradation within 120 min.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"403 ","pages":"Article 139412"},"PeriodicalIF":2.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922143","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
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