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Role of high-pressure CO2 pretreatment in facilitating cotton linter cellulose dissolution in aqueous NaOH/urea system 高压CO2预处理在NaOH/尿素水溶液中促进棉絮纤维素溶解的作用
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-16 DOI: 10.1016/j.matlet.2025.138942
Amir Shahin Shamsabadi, Shaida S. Rumi, Zhen Zhang, Noureddine Abidi
{"title":"Role of high-pressure CO2 pretreatment in facilitating cotton linter cellulose dissolution in aqueous NaOH/urea system","authors":"Amir Shahin Shamsabadi,&nbsp;Shaida S. Rumi,&nbsp;Zhen Zhang,&nbsp;Noureddine Abidi","doi":"10.1016/j.matlet.2025.138942","DOIUrl":"10.1016/j.matlet.2025.138942","url":null,"abstract":"<div><div>In this communication, we examine how high-pressure CO<sub>2</sub> (HPCD) pretreatment, alone and in combination with ethanol, acetic acid, or sulfuric acid, influences the dissolution behavior of cotton linter cellulose in a NaOH/urea/water system. It was found that HPCD did help to promote the dissolution of cotton linter cellulose. Among the tested systems, only the combination of HPCD and 40% sulfuric acid hydrolysis led to nearly complete cellulose dissolution, as confirmed by the results of polarized light microscopy (PLM) and UV–Vis spectroscopy. It was proposed that HPCD assisted the disruption of hydrogen bonding networks within the cellulose, thereby enhancing solvent accessibility.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138942"},"PeriodicalIF":2.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322859","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
Rubpy@FeTHQ conductive metal–organic framework composite for highly sensitive and selective electrochemiluminescence detection of dopamine Rubpy@FeTHQ导电金属-有机框架复合材料对多巴胺的高灵敏度和选择性电化学发光检测
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-16 DOI: 10.1016/j.matlet.2025.138947
Weiqi Wang, Xiaomei Wang, Ting Zou, Xinyu Xu, Keqiang Xu
{"title":"Rubpy@FeTHQ conductive metal–organic framework composite for highly sensitive and selective electrochemiluminescence detection of dopamine","authors":"Weiqi Wang,&nbsp;Xiaomei Wang,&nbsp;Ting Zou,&nbsp;Xinyu Xu,&nbsp;Keqiang Xu","doi":"10.1016/j.matlet.2025.138947","DOIUrl":"10.1016/j.matlet.2025.138947","url":null,"abstract":"<div><div>The development of highly sensitive and selective electrochemical sensors for dopamine (Dop) detection plays a vital role in clinical diagnostics and health monitoring. While conductive metal–organic frameworks (cMOFs) are considered promising materials for such applications, their limited intrinsic redox activity restricts their performance. In this work, a novel cMOF composite (Rubpy@FeTHQ) was synthesized through the in-situ incorporation of Ru(bpy)<sub>3</sub><sup>2+</sup> into FeTHQ. The introduction of redox-active sites and luminescent properties is achieved through functionalization with Ru(bpy)<sub>3</sub><sup>2+</sup>, resulting in synergistic enhancement of both conductivity and electrochemiluminescence (ECL) activity. This modification enables efficient dopamine detection. The Rubpy@FeTHQ sensor exhibits outstanding performance in Dop detection, achieving high linearity (<em>R</em><sup>2</sup> = 0.997) and a low detection limit (0.064 μM). Additionally, the sensor demonstrates excellent stability, reproducibility, and selectivity, with minimal interference from common biological metabolites. This study highlights the significant potential of Rubpy@FeTHQ as a robust ECL sensor for neurotransmitter detection. The developed composite material provides a scalable approach for designing multifunctional cMOFs tailored for biosensing applications, offering promising opportunities for advancements in clinical diagnostics and health monitoring.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138947"},"PeriodicalIF":2.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307745","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 and application of a novel radio frequency-Induction sintering technique utilizing metal-insulator transition for rapid dental zirconia sintering 利用金属-绝缘体过渡快速烧结牙科氧化锆的新型射频感应烧结技术的开发与应用
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-15 DOI: 10.1016/j.matlet.2025.138939
Eun-sung Choi , Je-hoon Lee , Jung-hyun Park , Ji-hwan Kim
{"title":"Development and application of a novel radio frequency-Induction sintering technique utilizing metal-insulator transition for rapid dental zirconia sintering","authors":"Eun-sung Choi ,&nbsp;Je-hoon Lee ,&nbsp;Jung-hyun Park ,&nbsp;Ji-hwan Kim","doi":"10.1016/j.matlet.2025.138939","DOIUrl":"10.1016/j.matlet.2025.138939","url":null,"abstract":"<div><div>This study presents RF induction sintering based on the metal–insulator transition (MIT) of zirconia, which becomes conductive near 1400 °C. Internal eddy currents enable 40-minute densification, achieving 186.8  MPa flexural strength and demonstrating clinical potential over conventional sintering.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138939"},"PeriodicalIF":2.7,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297288","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 extraction of calcium alginate and 2D nanocellulose from brown algae (Sargassum spp.) 褐藻中海藻酸钙和二维纳米纤维素的强化提取
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-15 DOI: 10.1016/j.matlet.2025.138941
Ramón Valdivia González , Mónika Yolotzin Velasco Gómez , Julio Silva Mendoza , José Ysmael Verde Gómez , Leonardo Chávez Guerrero
{"title":"Enhanced extraction of calcium alginate and 2D nanocellulose from brown algae (Sargassum spp.)","authors":"Ramón Valdivia González ,&nbsp;Mónika Yolotzin Velasco Gómez ,&nbsp;Julio Silva Mendoza ,&nbsp;José Ysmael Verde Gómez ,&nbsp;Leonardo Chávez Guerrero","doi":"10.1016/j.matlet.2025.138941","DOIUrl":"10.1016/j.matlet.2025.138941","url":null,"abstract":"<div><div>In the present work, the synthesis of high-value materials from <em>Sargassum</em> spp. is proposed through a novel process. The method involves heat treatment followed by hydrolysis, encompassing four key steps: pretreatment, extraction of sodium alginate, gelation of calcium alginate, and extraction of nanocellulose. Calcium alginate spheres and nanocellulose nanoplatelets (t≈40-240 nm) were characterized using Fourier transform infrared spectroscopy (FTIR), laser scanning microscopy (LSM), and scanning electron microscopy (SEM). FTIR data facilitated the identification of the functional groups to assess the influence of calcium chloride on alginate (1600 cm<sup>−1</sup>) and the correct nanocellulose isolation (895 cm<sup>−1</sup>). Micrographs obtained from SEM and LSM analysis show the internal nanofibers (15 to 50 nm), which confirm the success of 2D nanocellulose extraction. The method yielded two essential chemical compounds of commercial value, utilizing brown algae waste as a raw material.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138941"},"PeriodicalIF":2.7,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307744","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
In-situ grown multi-layered porous TiO2 composited copper doped tannic acid microflora on titanium surface for NIR responsive enhanced anti-bacteria 在钛表面原位生长多层多孔TiO2复合铜掺杂单宁酸菌群，增强近红外响应的抗菌性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-15 DOI: 10.1016/j.matlet.2025.138936
Peilin Wu , Qiqi Lu , Tianchen Liu, Jihua Nie, Zujiang Liu, Xi Rao
{"title":"In-situ grown multi-layered porous TiO2 composited copper doped tannic acid microflora on titanium surface for NIR responsive enhanced anti-bacteria","authors":"Peilin Wu ,&nbsp;Qiqi Lu ,&nbsp;Tianchen Liu,&nbsp;Jihua Nie,&nbsp;Zujiang Liu,&nbsp;Xi Rao","doi":"10.1016/j.matlet.2025.138936","DOIUrl":"10.1016/j.matlet.2025.138936","url":null,"abstract":"<div><div>In this study, tannic acid and copper nitrate were used to create a porous titanium dioxide/Cu-doped tannic acid composite coating for antibacterial titanium implants. The results showed that the deposition of copper doped tannic acid microflora on the porous structure of titanium dioxide could confer controllable antibacterial adhesion properties, and the antibacterial rates of <em>S. aureus</em> and <em>E. coli</em> were improved to 95.27% and 97.19% under NIR. The coating also showed good hydrophilicity and osteoblast biocompatibility, indicating potential application for orthopaedics implant modification.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138936"},"PeriodicalIF":2.7,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335683","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
Microscale electrothermal uniformity of laser-induced graphene films 激光诱导石墨烯薄膜的微尺度电热均匀性
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-15 DOI: 10.1016/j.matlet.2025.138944
Xinyu Zhao , Xinda Wang , Caiqi Zhou , Jixu Liu , Xingwen Zhou , Yongde Huang
{"title":"Microscale electrothermal uniformity of laser-induced graphene films","authors":"Xinyu Zhao ,&nbsp;Xinda Wang ,&nbsp;Caiqi Zhou ,&nbsp;Jixu Liu ,&nbsp;Xingwen Zhou ,&nbsp;Yongde Huang","doi":"10.1016/j.matlet.2025.138944","DOIUrl":"10.1016/j.matlet.2025.138944","url":null,"abstract":"<div><div>The control of processing technology plays a pivotal role in the formation of laser-induced graphene (LIG), enabling the multi-functionalization of LIG films. The homogeneity of graphene microstructure, which is essential for the practical application of LIG functional films, yet remains insufficiently studied. In this study, we investigate the effects of defocus amount and scanning spacing on the microscale homogeneity of LIG, especially the electrothermal uniformity of films. The results demonstrate that the LIG lines exhibit progressively greater differences in morphology and composition as the defocus amount increases. Additionally, sheet resistance can only characterize the macroscopic homogeneity, and evaluating the microscopic homogeneity needs to be combined with the microscopic morphology and heat distribution. Overlapping scanning reduces macroscopic electrical anisotropy and improves structural and thermal uniformity (thermal deviation is 2.41%) at the microscale, contributing to high performance LIG film heaters. These findings provide both theoretical foundation and practical guidance for the mass production of LIG functional films.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138944"},"PeriodicalIF":2.7,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291253","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
Drapeable and elastic 3D printed Polylactic Acid (PLA) textiles 可垂性和弹性3D打印聚乳酸（PLA）纺织品
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-15 DOI: 10.1016/j.matlet.2025.138943
Abdalla M. Omar , Rutvik Perepa , Mohamed H. Hassan , Evangelos Daskalakis , Wajira Mirihanage , Paulo J.D.S. Bartolo , Paul Mativenga , Prasad Potluri
{"title":"Drapeable and elastic 3D printed Polylactic Acid (PLA) textiles","authors":"Abdalla M. Omar ,&nbsp;Rutvik Perepa ,&nbsp;Mohamed H. Hassan ,&nbsp;Evangelos Daskalakis ,&nbsp;Wajira Mirihanage ,&nbsp;Paulo J.D.S. Bartolo ,&nbsp;Paul Mativenga ,&nbsp;Prasad Potluri","doi":"10.1016/j.matlet.2025.138943","DOIUrl":"10.1016/j.matlet.2025.138943","url":null,"abstract":"<div><div>In this research we present a novel technique to develop high ductility and drapeability 3D printed textiles by systematically controlling infill patterns (gyroid and rectilinear) across infill orientations (45°, 60°, 90°) and extrusion rates (60%, 80%, 100%). Using SEM, drapeability bending tests, and mechanical grab tests, we demonstrate for the first time 3D printed bio-based textiles with enhanced ductility and drapeability, while maintaining mechanical strength properties. Our novel approach can produce textiles with 91.4% reduction in bending length while maintaining mechanical strength, reduction in material use by as much as 40%, and a reduction in printing time by 50%. Therefore, this research presents a new approach to control several competing design objectives to 3D print sustainable bio-based textiles.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138943"},"PeriodicalIF":2.7,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291250","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
Effect of boron gradient design on the microstructure and properties of laser-clad Fe-based coatings 硼梯度设计对激光熔覆铁基涂层组织和性能的影响
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-14 DOI: 10.1016/j.matlet.2025.138932
Qian Wang, Qian Li, Jun Wei Zhang
{"title":"Effect of boron gradient design on the microstructure and properties of laser-clad Fe-based coatings","authors":"Qian Wang,&nbsp;Qian Li,&nbsp;Jun Wei Zhang","doi":"10.1016/j.matlet.2025.138932","DOIUrl":"10.1016/j.matlet.2025.138932","url":null,"abstract":"<div><div>This study investigated the effect of boron gradient design on the microstructure, microhardness, and wear properties of laser-clad Fe-based coatings on 45 steel substrates. Two coating systems were fabricated by laser cladding: a gradient coating with boron content progressively increasing from 1.6 to 6.0 wt% across four layers, and a uniform multilayer coating with constant 6.0 wt% boron content. Comprehensive characterization revealed that the gradient coating exhibited a controlled evolution of boride morphology from networked eutectic to clustered-shape and finally to coarse, rod-like/blocky structures with increasing boron content. While both coatings achieved comparable microhardness and reduced friction coefficients compared to the substrate, the gradient design effectively alleviated interlayer stress concentration through compositional gradient optimization, reducing defects such as penetrating cracks, thereby achieving a coordinated optimization of microstructure and properties from the interfacial bonding zone to the surface layer.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138932"},"PeriodicalIF":2.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297287","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
Substantial 〈101] superlattice dislocations and nanotwins achieved without deformation in a casting Cr-rich TiAl-based alloy after a normalizing treatment 在正火处理后，富cr tial基合金在不变形的情况下获得了大量的< 101]超晶格位错和纳米孪晶
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-14 DOI: 10.1016/j.matlet.2025.138937
Shiqiu Liu , Hongsheng Ding , Ruirun Chen , Jingjie Guo , Hengzhi Fu
{"title":"Substantial 〈101] superlattice dislocations and nanotwins achieved without deformation in a casting Cr-rich TiAl-based alloy after a normalizing treatment","authors":"Shiqiu Liu ,&nbsp;Hongsheng Ding ,&nbsp;Ruirun Chen ,&nbsp;Jingjie Guo ,&nbsp;Hengzhi Fu","doi":"10.1016/j.matlet.2025.138937","DOIUrl":"10.1016/j.matlet.2025.138937","url":null,"abstract":"<div><div>Herein, both substantial <span><math><mrow><mo>〈</mo><mn>101</mn><mo>]</mo></mrow></math></span> superlattice dislocations and nanotwins were achieved without deformation in a Cr-rich TiAl-based alloy prepared by continuous casting after a normalization at 1250 ℃ for 3 h, which remarkably enhanced the room-temperature (RT) compressive properties of the TiAl-based alloy. The heat-treated microstructural characteristics and the formation mechanism of these substructures were discussed emphatically. This research will provide helpful inspiration for further strengthening and plasticizing of TiAl intermetallic.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138937"},"PeriodicalIF":2.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291251","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
Ti3C2@Ni-MOF heterostructure as efficient bifunctional sensor for highly sensitive detection of adenine and ascorbic acid Ti3C2@Ni-MOF异质结构作为高灵敏度检测腺嘌呤和抗坏血酸的高效双功能传感器
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-14 DOI: 10.1016/j.matlet.2025.138933
Zhiqiang Yan , Ya-Pan Wu , Yuanting Hu , Shuang Li , Ya-Meng Yin , Xue-Qian Wu , Dong-Sheng Li
{"title":"Ti3C2@Ni-MOF heterostructure as efficient bifunctional sensor for highly sensitive detection of adenine and ascorbic acid","authors":"Zhiqiang Yan ,&nbsp;Ya-Pan Wu ,&nbsp;Yuanting Hu ,&nbsp;Shuang Li ,&nbsp;Ya-Meng Yin ,&nbsp;Xue-Qian Wu ,&nbsp;Dong-Sheng Li","doi":"10.1016/j.matlet.2025.138933","DOIUrl":"10.1016/j.matlet.2025.138933","url":null,"abstract":"<div><div>The development of sensing materials with high sensitivity and selectivity is crucial for life health monitoring and disease diagnosis. Herein a new bifunctional sensor, Ti<sub>3</sub>C<sub>2</sub>@Ni-MOF-<em>x</em>@CC (<em>x</em> = 1, 2, 3, and the carbon cloth is denoted as CC) was fabricated and used for the simultaneous detection of adenine (A) and ascorbic acid (AA). Notably, the Ti<sub>3</sub>C<sub>2</sub>@Ni-MOF-2 exhibited excellent performance, featuring a wide dynamic range, higher sensitivity and lower detection limits. Additionally, it demonstrated strong reproducibility, anti-interference capability, and reliable recovery in bovine serum samples.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138933"},"PeriodicalIF":2.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291252","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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