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Ultrafast and mesoporogen-free synthesis of hierarchical ZSM-5 zeolites
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-08 DOI: 10.1016/j.matlet.2025.138557
Feng Ye, Shuanshi Fan, Yanhong Wang, Xuemei Lang, Yihui Lv, Weibo Chen, Gang Li
{"title":"Ultrafast and mesoporogen-free synthesis of hierarchical ZSM-5 zeolites","authors":"Feng Ye,&nbsp;Shuanshi Fan,&nbsp;Yanhong Wang,&nbsp;Xuemei Lang,&nbsp;Yihui Lv,&nbsp;Weibo Chen,&nbsp;Gang Li","doi":"10.1016/j.matlet.2025.138557","DOIUrl":"10.1016/j.matlet.2025.138557","url":null,"abstract":"<div><div>The facile synthesis of hierarchical ZSM-5 zeolites without mesoporogens is highly desirable for industrial applications. In this study, hierarchical ZSM-5 zeolites with abundant mesopores and a nearly single-crystalline structure were rapidly synthesized in a mesoporogen-free system. Under conventional heating, the synthesis time was significantly reduced to just 15 min, significantly improving production efficiency. The key to this ultrafast process was the use of a tubular reactor, combined with the strategic selection of silicon and aluminum sources.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138557"},"PeriodicalIF":2.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823426","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
Evaluating antimicrobial activity: Biogenic vs. Chemically functionalized zinc oxide nanoparticles
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-08 DOI: 10.1016/j.matlet.2025.138548
Sanhita Mandal , Chinmay Hazra , Neha Joshi , Ramkrishna Sen , Siddhartha Das , Karabi Das
{"title":"Evaluating antimicrobial activity: Biogenic vs. Chemically functionalized zinc oxide nanoparticles","authors":"Sanhita Mandal ,&nbsp;Chinmay Hazra ,&nbsp;Neha Joshi ,&nbsp;Ramkrishna Sen ,&nbsp;Siddhartha Das ,&nbsp;Karabi Das","doi":"10.1016/j.matlet.2025.138548","DOIUrl":"10.1016/j.matlet.2025.138548","url":null,"abstract":"<div><div>This study introduces an unique approach to synthesize zinc oxide NPs using biogenic surfactants (rhamnolipid and surfactin) and compares their antimicrobial efficacy to sodium dodecyl sulphate functionalized ZnO. The surfactin tagged ZnO demonstrated 42.28% more bacterial inhibition and rhamnolipid showed 132% more inhibition against Gram-positive <em>M. luteus</em> (<em>Ml</em>) (ATCC 4698) than SDS functionalized ZnO while surfactin tagged ZnO demonstrated 9.5% and rhamnolipid tagged ZnO exhibited 35.6% more bacterial inhibition against Gram-negative <em>E. coli</em> (<em>DH5 alpha</em>) (CP026085) bacteria than SDS functionalized ZnO. The fluorescence microscopy revealed a synergistic effect of ZnO and biosurfactant in killing bacterial cells by ROS generation, and membrane disruption and destabilization. This green synthesis approach offers a sustainable alternative to toxic surfactants, contributing to solutions against antimicrobial-resistant bacteria.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138548"},"PeriodicalIF":2.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807984","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
Layer-by-layer assembly of silver nanoparticle coating on laser-patterned titanium temporary anchorage device for enhanced osteogenic and antibacterial properties
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-08 DOI: 10.1016/j.matlet.2025.138544
Xiaohang Guan , Na Ni , Chengjuan Yang , Zhen Yang , Tenglong Du
{"title":"Layer-by-layer assembly of silver nanoparticle coating on laser-patterned titanium temporary anchorage device for enhanced osteogenic and antibacterial properties","authors":"Xiaohang Guan ,&nbsp;Na Ni ,&nbsp;Chengjuan Yang ,&nbsp;Zhen Yang ,&nbsp;Tenglong Du","doi":"10.1016/j.matlet.2025.138544","DOIUrl":"10.1016/j.matlet.2025.138544","url":null,"abstract":"<div><div>Surface modification of titanium temporary anchorage device (TAD) plays a crucial role in determining their biological performance. Here, we report a dual-functional coating strategy combining femtosecond laser patterning with layer-by-layer (LBL) assembly of silver nanoparticles (AgNPs)-loaded chitosan/heparin films on TA1 titanium surfaces. Surface characterization via SEM and XPS confirmed successful coating preparation and AgNPs loading. The antibacterial efficacy against E. coli increased with AgNPs concentration, while cytotoxicity studies revealed that high AgNPs concentrations exhibited certain toxicity toward MC3T3-E1 cells. The micro/nanostructures created by laser patterning provided additional storage space for AgNPs, potentially enabling sustained release. This work demonstrates a promising approach for developing multifunctional TAD surfaces with both osteogenic and antibacterial properties.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138544"},"PeriodicalIF":2.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807983","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
Precipitation of α2 phase, β decomposition-induced HCP-FCC phase transformation, and formation of abnormal nanotwins in an additively manufactured multicomponent α + β titanium alloy
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-08 DOI: 10.1016/j.matlet.2025.138552
Tao Wang , Haibo Tang , Yanyan Zhu , Xiangjun Tian
{"title":"Precipitation of α2 phase, β decomposition-induced HCP-FCC phase transformation, and formation of abnormal nanotwins in an additively manufactured multicomponent α + β titanium alloy","authors":"Tao Wang ,&nbsp;Haibo Tang ,&nbsp;Yanyan Zhu ,&nbsp;Xiangjun Tian","doi":"10.1016/j.matlet.2025.138552","DOIUrl":"10.1016/j.matlet.2025.138552","url":null,"abstract":"<div><div>An α + β titanium alloy with 9 components was processed by laser directed energy deposition (LDED). Such a complex alloying strategy led to the precipitation of coherent α<sub>2</sub> (Ti<sub>3</sub>Al) particles, phase transformation from hexagonal close packed (HCP) to face centered cubic (FCC), and formation of abnormal nanotwins in α lamellae. Specifically, the FCC nano laths and abnormal nanotwins were formed due to the shearing of the prismatic plane of the α phase during β decomposition. To the best knowledge of authors, such phenomena were found in α + β titanium alloys for the first time. All of these fine microstructures in α lamellae are coherent, so the restriction of dislocation movement by coherent interface and twin boundary is critical strengthening mechanism for the development of α + β titanium alloys.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138552"},"PeriodicalIF":2.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807987","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 WC mass fraction on the microstructure and frictional wear properties of WC/GH3536 matrix composites fabricated by selective laser melting
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-08 DOI: 10.1016/j.matlet.2025.138555
Qingsong Niu, Jun Zhao, Bin Jia, Shuyuan Luo
{"title":"Effect of WC mass fraction on the microstructure and frictional wear properties of WC/GH3536 matrix composites fabricated by selective laser melting","authors":"Qingsong Niu,&nbsp;Jun Zhao,&nbsp;Bin Jia,&nbsp;Shuyuan Luo","doi":"10.1016/j.matlet.2025.138555","DOIUrl":"10.1016/j.matlet.2025.138555","url":null,"abstract":"<div><div>WC/GH3536 composite powders with different WC mass fractions were melted on the H13 surface by Selective Laser Melting (SLM). The defects, microstructure and component diffusion at the interface were also analyzed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The results show that the composite with 30 % WC content has the best high-temperature wear resistance with a wear rate of 3.27 mm<sup>3</sup>·N<sup>−1</sup>·mm<sup>−1</sup>. The high-temperature wear resistance of the composite is improved by 37 % compared to H13.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138555"},"PeriodicalIF":2.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815909","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 pseudocapacitive performance of MoS2/ZnS nanocomposites for advanced supercapacitor applications
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-07 DOI: 10.1016/j.matlet.2025.138543
Atul Yadav , Anil K. Sharma , Abhishek Dubey , Kajal K. Dey , Dhirendra K. Chaudhary , Punit K. Dhawan
{"title":"Enhanced pseudocapacitive performance of MoS2/ZnS nanocomposites for advanced supercapacitor applications","authors":"Atul Yadav ,&nbsp;Anil K. Sharma ,&nbsp;Abhishek Dubey ,&nbsp;Kajal K. Dey ,&nbsp;Dhirendra K. Chaudhary ,&nbsp;Punit K. Dhawan","doi":"10.1016/j.matlet.2025.138543","DOIUrl":"10.1016/j.matlet.2025.138543","url":null,"abstract":"<div><div>This study explores the utility of MoS<sub>2</sub>, ZnS, and MoS<sub>2</sub>/ZnS nanocomposites as electrodes for supercapacitor applications. Binder-free electrodes were fabricated, and the MoS<sub>2</sub>/ZnS composite exhibited the highest specific capacitance of 1628.3 Fg<sup>−1</sup> at a current density of 1 Ag<sup>−1</sup>, highlighting its excellent electrochemical performance. These findings suggest that optimizing the composition and structure of MoS<sub>2</sub>/ZnS nanocomposites could enhance the efficiency and performance of supercapacitor technologies and open new avenues for advancements in energy storage technology.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138543"},"PeriodicalIF":2.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799284","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 strength-ductility synergy via bimodal-grained structure in a pre-thermomechanical treated Al-Mg-Zn alloy
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-07 DOI: 10.1016/j.matlet.2025.138545
Yang Huang , Wensheng Liu , Chuzhao Zhang , Mingdong Wu , Zeyu Li , Juan Wang , Baishan Chen , Daihong Xiao , Lanping Huang
{"title":"Enhanced strength-ductility synergy via bimodal-grained structure in a pre-thermomechanical treated Al-Mg-Zn alloy","authors":"Yang Huang ,&nbsp;Wensheng Liu ,&nbsp;Chuzhao Zhang ,&nbsp;Mingdong Wu ,&nbsp;Zeyu Li ,&nbsp;Juan Wang ,&nbsp;Baishan Chen ,&nbsp;Daihong Xiao ,&nbsp;Lanping Huang","doi":"10.1016/j.matlet.2025.138545","DOIUrl":"10.1016/j.matlet.2025.138545","url":null,"abstract":"<div><div>Bimodal structures in metallic materials have been considered as promising research frontiers. In this study, we applied a pre-thermomechanical treatment that improved the tensile strength of a bimodal-grained Al-5.10 Mg-3.09Zn-0.21Ag-0.13Zr-0.08Yb alloy by 12 % to 543.7 MPa, while the bimodal structure enabled the alloy to retain approximately 90 % of tensile elongation. The enhanced performance originates from high-density Guinier-Preston (GP) zones generated during pre-aging and substantial dislocations introduced by pre-straining, which collectively accelerated T-phase age-hardening kinetics. Furthermore, the bimodal structure’s coarse grain components enhanced dislocation storage capacity, thereby alleviating plasticity loss that typically associated with pre-straining processes.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138545"},"PeriodicalIF":2.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799282","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
Enhancing mechanical properties and microstructural integrity of silica fume-based self-compacting geopolymer concrete through municipal solid waste incineration fly ash incorporation
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-06 DOI: 10.1016/j.matlet.2025.138541
Ahmed Babeker Elhag , Abdellatif Selmi , Zeeshan Ahmad , Nejib Ghazouani
{"title":"Enhancing mechanical properties and microstructural integrity of silica fume-based self-compacting geopolymer concrete through municipal solid waste incineration fly ash incorporation","authors":"Ahmed Babeker Elhag ,&nbsp;Abdellatif Selmi ,&nbsp;Zeeshan Ahmad ,&nbsp;Nejib Ghazouani","doi":"10.1016/j.matlet.2025.138541","DOIUrl":"10.1016/j.matlet.2025.138541","url":null,"abstract":"<div><div>This study examines the impact of municipal solid waste incineration fly ash (MFA) on silica fume-based self-compacting geopolymer concrete (SGC). MFA replaced silica fume at 0–40 % by weight across five mixes. Results showed that workability improved with MFA incorporation, as shown by slump flow, V-funnel, and L-box tests. The highest compressive (44.12 MPa) and splitting tensile strengths (3.87 MPa) were achieved at 20 % MFA replacement after 28 days, with further increases reducing strength due to altered geopolymerization and shrinkage. SEM confirmed reduced voids, while TGA showed 1.18 % higher mass loss, indicating improved geopolymerization. Excess MFA (≥30 %) increased porosity and cracking, reducing performance due to unreacted particles and carbonation effects.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138541"},"PeriodicalIF":2.7,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799279","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
Thickness and oxygen pressure dependent electrical transport properties in SrMoO3 thin films
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-06 DOI: 10.1016/j.matlet.2025.138537
Shuo Dong, Min Zhu, Xin Dai, Tangxiang Xu, Yingqi Li, Juan Gao
{"title":"Thickness and oxygen pressure dependent electrical transport properties in SrMoO3 thin films","authors":"Shuo Dong,&nbsp;Min Zhu,&nbsp;Xin Dai,&nbsp;Tangxiang Xu,&nbsp;Yingqi Li,&nbsp;Juan Gao","doi":"10.1016/j.matlet.2025.138537","DOIUrl":"10.1016/j.matlet.2025.138537","url":null,"abstract":"<div><div>High-quality SrMoO<sub>3</sub> films were synthesized using pulsed laser deposition under controlled oxygen pressure conditions. The 32-nm films consistently demonstrated metallic behavior across all oxygen pressures investigated. The 16-nm films exhibited increased resistivity at 4.9 K and 13.8 K when deposited at <em>10</em><sup>−</sup><em><sup>4</sup></em> Torr and <em>10</em><sup>−</sup><em><sup>3</sup></em> Torr, respectively. Metal-insulator transitions were observed at critical temperatures of 19.8 K, 25.8 K, and 27.8 K for 10-nm films grown under different oxygen pressures. The electronic structure and electrical transport properties become increasingly sensitive to oxygen pressure variations with decreasing film thickness. This sensitivity explains the occurrence of metal–insulator transitions in 10-nm films under different oxygen conditions.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138537"},"PeriodicalIF":2.7,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799280","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
Influence of clamp pressure on weld performance and fracture mode in laser welded polyamide-6 sheets
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-06 DOI: 10.1016/j.matlet.2025.138542
Dhruva Kumar Goyal , Arpit Bajpai , Ravi Kant
{"title":"Influence of clamp pressure on weld performance and fracture mode in laser welded polyamide-6 sheets","authors":"Dhruva Kumar Goyal ,&nbsp;Arpit Bajpai ,&nbsp;Ravi Kant","doi":"10.1016/j.matlet.2025.138542","DOIUrl":"10.1016/j.matlet.2025.138542","url":null,"abstract":"<div><div>This study investigates the effect of clamp pressure on laser transmission welding of polyamide-6 sheets using electrolytic iron powder for energy absorption. Welding is performed with a fibre laser on 2 mm thick polyamide-6 sheets, and the influence of clamp pressure on weld strength and morphology is analysed. Results show that weld strength increases with pressure up to an optimal level but decreases beyond due to excessive molten polymer loss. SEM analysis confirms iron particle embedding, enhancing mechanical interlocking. Fractographic analysis shows substrate and interface fracture patterns with pressure variations, indicating differences in molecular interdiffusion. The findings highlight the importance of optimizing clamp pressure for better joint strength and integrity.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138542"},"PeriodicalIF":2.7,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799281","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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