Materials最新文献_第5页

Antibacterial Coating Based on Functionalized MoS₂ Quantum Dots. 基于功能化MoS2量子点的抗菌涂层。

IF 3.1 3区材料科学

Materials Pub Date : 2025-03-19 DOI: 10.3390/ma18061352

Toby Chan, Soha Ahmadi, Zahra Ramezani, Michael Thompson

引用次数: 0

Description of the Lubricant Behavior Based on the Theory of Elasto-Viscoplastic. 基于弹粘塑性理论的润滑油性能描述。

IF 3.1 3区材料科学

Materials Pub Date : 2025-03-19 DOI: 10.3390/ma18061360

Yuriy O Nosov, Anna A Kamenskikh, Anastasia P Bogdanova

{"title":"Description of the Lubricant Behavior Based on the Theory of Elasto-Viscoplastic.","authors":"Yuriy O Nosov, Anna A Kamenskikh, Anastasia P Bogdanova","doi":"10.3390/ma18061360","DOIUrl":"10.3390/ma18061360","url":null,"abstract":"The aim of the work is to provide a mathematical description of the lubricant's behavior model used in sliding bearings of bridge structures. It was previously established that the Maxwell model does not correctly describe the lubricant's behavior in a wide range of temperatures and deformation rates. The lubricant model should take into account not only viscosity but also plasticity. The Anand model, which was adapted by introducing temperature dependencies for a number of material parameters, was chosen to describe the lubricant behavior. The functionality of the previously created procedure for identifying material properties was also expanded on the modified Anand model. This made it possible to obtain a lubricant mathematical model with an error of less than 5% in the operating temperature range from -40 to +80 °C. The study included a description of the behavior model for two lubricants: CIATIM-221 and CIATIM-221F. CIATIM-221F differs from CIATIM-221 by including superfine particles of polytetrafluoroethylene (PTFE) to improve properties. The study confirmed that the modified Anand model allows describing the material behavior more accurately than the Maxwell model. It was found that the samples behave as a solid over the entire temperature range (from -40 to +80 °C). A comparative analysis of the thermal behavior of CIATIM-221 and CIATIM-221F was performed.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 6","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11943954/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143719799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving Steam Methane Reforming Efficiency via Hierarchical Structure in Additively Manufactured Ni-Based Self-Catalytic Reactors. 层叠结构增材制造镍基自催化反应器提高蒸汽甲烷重整效率。

IF 3.1 3区材料科学

Materials Pub Date : 2025-03-19 DOI: 10.3390/ma18061350

Dongdong Dong, Jiangqi Zhu, Min Liu, Xingchen Yan, Bingwen Lu, Kesong Zhou

引用次数: 0

Role of Composition and Temperature in Shaping the Structural and Optical Properties of Iodide-Based Hybrid Perovskite Thin Films Produced by PVco-D Technique. 成分和温度对PVco-D法制备碘基杂化钙钛矿薄膜结构和光学性能的影响。

IF 3.1 3区材料科学

Materials Pub Date : 2025-03-18 DOI: 10.3390/ma18061336

Agnieszka Marjanowska, Krzysztof Wiśniewski, Przemysław Płóciennik, Bouchta Sahraoui, Anna Zawadzka

{"title":"Role of Composition and Temperature in Shaping the Structural and Optical Properties of Iodide-Based Hybrid Perovskite Thin Films Produced by PVco-D Technique.","authors":"Agnieszka Marjanowska, Krzysztof Wiśniewski, Przemysław Płóciennik, Bouchta Sahraoui, Anna Zawadzka","doi":"10.3390/ma18061336","DOIUrl":"10.3390/ma18061336","url":null,"abstract":"The research considered in this publication aims to contribute to developing perovskite-based technologies by conducting basic research on perovskite materials. The materials described in the paper are thin films of hybrid perovskite MEAPbI3 made using the PVco-D method in three different compositions-perovskite samples differ in the percentage of organic methylammonium and inorganic iodide parts. This publication discusses the influence of the composition of the thin perovskite layer on its structural and optical properties and the influence of the temperature of the environment of the perovskite thin film on optical properties. To answer these questions, the surface topography was analyzed using the AFM method, spectroscopic measurements were carried out in the UV-Vis-NIR range, and photoluminescence measurements were performed in a wide temperature range-from about 80 K to 310 K. The results indicate that the composition changes the surface topography, forming increasingly higher crystallites (up to 606%) with increasing methylammonium content. The transition temperature from the orthorhombic to the tetragonal phase was determined for each composition at about 140 K. For the composition of 30% MEAI + 70% PbI2, the phase transition temperature from tetragonal to cubic was determined at a temperature close to RT.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 6","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11944187/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sodium and Potassium Mixed Effects on the Viscoelastic Behavior of Silicate Glasses. 钠钾混合对硅酸盐玻璃粘弹性的影响。

IF 3.1 3区材料科学

Materials Pub Date : 2025-03-18 DOI: 10.3390/ma18061337

Fucheng Wu, Yonggang Huang, Haizheng Tao, Peng Jiao, Ziyang Xiao, Jinsheng Jia

{"title":"Sodium and Potassium Mixed Effects on the Viscoelastic Behavior of Silicate Glasses.","authors":"Fucheng Wu, Yonggang Huang, Haizheng Tao, Peng Jiao, Ziyang Xiao, Jinsheng Jia","doi":"10.3390/ma18061337","DOIUrl":"10.3390/ma18061337","url":null,"abstract":"This study investigated the viscoelastic behavior and structural evolution of silicate glasses with the molar composition 70SiO2·(30 - x) Na2O·xK2O, where the molar ratio r = x/30 varied between 0, 0.25, 0.5, and 0.75. A notable \"V\"-shaped trend in relaxation activation energy (ΔHGt) was observed, with the energy reaching a minimum of 163.14 kJ/mol at r = 0.5. This trend exhibited a synergistic mixed alkali effect that significantly affected the viscoelastic properties of the glass. Raman spectroscopy analysis revealed dynamic structural reorganization within the [SiO4] network, transitioning from Q4 to Q3 for r < 0.5 and reverting to Q4 for r > 0.5 as the K2O content increased. These structural transformations provide atomic-scale evidence for the observed viscoelastic behavior. The findings offer critical insights into the mixed alkali effect on viscoelasticity, establishing a theoretical foundation for optimizing clad materials in optical fiber imaging arrays.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 6","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11943636/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143719979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on the Ageing Behaviour of High-Modulus Modified Bitumen Based on Rheological and Chemical Approaches. 基于流变学和化学方法的高模量改性沥青老化行为研究。

IF 3.1 3区材料科学

Materials Pub Date : 2025-03-18 DOI: 10.3390/ma18061332

Xuemao Feng, Xin Li, Mingchen Li, Liping Liu, Zhenbang Cheng, Zhanchuang Han

{"title":"Investigation on the Ageing Behaviour of High-Modulus Modified Bitumen Based on Rheological and Chemical Approaches.","authors":"Xuemao Feng, Xin Li, Mingchen Li, Liping Liu, Zhenbang Cheng, Zhanchuang Han","doi":"10.3390/ma18061332","DOIUrl":"10.3390/ma18061332","url":null,"abstract":"With outstanding resistance for permanent deformation, high-modulus modified bitumen (HMB) has garnered widespread attention in recent years and has been employed in the construction of bitumen pavements across various regions. However, limited research exists on the ageing behaviour of HMB, and conventional short-term ageing protocols for bitumen may not be applicable to HMB due to its exceptionally high viscosity. Therefore, this study aims to assess the ageing behaviour of HMB and propose a suitable short-term ageing process for HMB utilizing dynamic shear rheometer (DSR) and gel permeation chromatography (GPC) approaches. For comparison purposes, the ageing behaviour of a type of SBS-modified bitumen and a kind of base bitumen were also analyzed. Initially, the study involved a comparison of the properties of bitumen subjected to short-term ageing at various temperatures and those of bitumen within mixtures undergoing short-term oven ageing tests. Subsequently, both the chemical and rheological properties of bitumen under diverse ageing conditions were examined. Finally, investigations were conducted to establish relationships between rheological properties and the molecular weight distribution of HMB. The reported results indicate that the suggested ageing temperature for the thin-film oven test (TFOT) should be increased to 193 °C for HMB, achieving a more accurate simulation of short-term ageing in HMB mixtures during on-site mixing, transport, and paving processes. Compared to base bitumen and SBS-modified bitumen, HMB exhibits superior ageing resistance. Furthermore, the molecular weight distribution of HMB is strongly correlated with its rheological properties. This correlation offers a promising approach to predict the rheological properties of bitumen in HMB mixtures by directly analyzing the chemical molecular weight distribution of the binders, thereby eliminating the need for an extraction process.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 6","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11943581/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143719955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient Ultrasound-Assisted Synthesis of Chemically Supported Anionic Functional Group Ionic Liquids and Its Enhanced Adsorption Performance Towards Vanadium (V). 高效超声辅助合成化学负载阴离子官能团离子液体及其对钒的增强吸附性能

IF 3.1 3区材料科学

Materials Pub Date : 2025-03-18 DOI: 10.3390/ma18061330

Bo Chen, Shenxu Bao, Yimin Zhang, Jiahao Zhou, Wei Ding, Liuyi Ren, Siyuan Yang, Ye Zhang

{"title":"Efficient Ultrasound-Assisted Synthesis of Chemically Supported Anionic Functional Group Ionic Liquids and Its Enhanced Adsorption Performance Towards Vanadium (V).","authors":"Bo Chen, Shenxu Bao, Yimin Zhang, Jiahao Zhou, Wei Ding, Liuyi Ren, Siyuan Yang, Ye Zhang","doi":"10.3390/ma18061330","DOIUrl":"10.3390/ma18061330","url":null,"abstract":"In this study, the chemically supported ionic liquids (CSILs) were synthesized by ultrasound irradiation (UI) to improve the preparation process and further strengthen the adsorption performance of CSILs towards vanadium (V). The impacts of UI and conventional mechanic stirring (CMS) on the synthesis and adsorption characteristics of polystyrene [1-butyl-3-methylimidazolium][nitrate] (PS[C4mim][NO3]) were comparatively investigated. The experimental results demonstrate that ultrasound can dramatically shorten the preparation time from 1920 min to 15 min, and HNO3 dosage is reduced by 15.79%. Under the same adsorption conditions, the CSILs synthesized by UI achieve the maximal adsorption capacity towards vanadium (V) as 248.95 mg/g at 150 min, while the CSILs processed by CMS reach 223.90 mg/g at 105 min. Particularly, the adsorption capacity of CSILs synthesized by UI can be maintained as 96.42% of the initial value after 10 cycles of adsorption-desorption, while that of CSILs processed by CMS maintain as 94.87%. The adsorption isotherm and kinetics fitting demonstrate that vanadium (V) adsorption by two CSILs is dominated by chemisorption as a single molecular layer. Additionally, the adsorption reaction of vanadium (V) by these two CSILs are both endothermic, and entropy increases. Fourier transform infrared, scanning electron microscopy, and energy spectrometry analyses prove that PS[C4mim][NO3] is successfully prepared by UI and CMS methods, and ultrasound waves will not destroy the intact spherical structure of the support resins. The current work provides a novel insight for the efficient synthesis of CSILs, which is also a potential technique for improving the adsorption performance of the adsorbents towards valuable metals.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 6","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11943831/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in High-Temperature Non-Metallocene Catalysts for Polyolefin Elastomers. 聚烯烃弹性体高温非茂金属催化剂研究进展。

IF 3.1 3区材料科学

Materials Pub Date : 2025-03-18 DOI: 10.3390/ma18061334

Cheng Wang, Xin Li, Si Chen, Tianyu Shan

{"title":"Advances in High-Temperature Non-Metallocene Catalysts for Polyolefin Elastomers.","authors":"Cheng Wang, Xin Li, Si Chen, Tianyu Shan","doi":"10.3390/ma18061334","DOIUrl":"10.3390/ma18061334","url":null,"abstract":"Despite the great successes achieved by metallocene catalysts in high-value-added polyolefin elastomer, the challenging preparation conditions and undesirable high-temperature molecular weight capabilities have compromised the efficiency and cost of polyolefin in industrial production. Recently, non-metallocene catalysts have received considerable attention due to their high thermostability, especially when coordinated with early transition metals. This review provides an overview of these early transition metal non-metallocene catalysts, which are mainly composed of N,N'-, N,O-, and N,S-bidentate complexes and tridentate complexes. The structural characteristics, catalytic performance, advantages, and disadvantages of the relevant non-metallocene catalysts, as well as their applications, are discussed. Candidates for commercialization of non-metallocene catalysts are proposed-focusing on imine-enamine, amino-quinoline, and pyridine-imine catalysts-by comparing the successful industrialization cases of metallocene catalysts. Finally, the trend in the research on non-metallocene catalysts and the strategies to address the challenges limiting their commercialization are considered.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 6","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11944024/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PVP as an Oxygen Vacancy-Inducing Agent in the Development of Black 45S5 Bioactive Glass Fibrous Scaffolds Doped with Zn and Mg Using A-HSBS. PVP作为氧空位诱导剂在A-HSBS掺杂Zn和Mg黑色45S5生物活性玻璃纤维支架中的应用

IF 3.1 3区材料科学

Materials Pub Date : 2025-03-18 DOI: 10.3390/ma18061340

Keila C Costa, Maria Geórgia da S Andrade, Rondinele N de Araujo, Adegildo R de Abreu Junior, Marianna V Sobral, Juan Carlos R Gonçalves, Bianca V Sousa, Gelmires A Neves, Romualdo R Menezes

{"title":"PVP as an Oxygen Vacancy-Inducing Agent in the Development of Black 45S5 Bioactive Glass Fibrous Scaffolds Doped with Zn and Mg Using A-HSBS.","authors":"Keila C Costa, Maria Geórgia da S Andrade, Rondinele N de Araujo, Adegildo R de Abreu Junior, Marianna V Sobral, Juan Carlos R Gonçalves, Bianca V Sousa, Gelmires A Neves, Romualdo R Menezes","doi":"10.3390/ma18061340","DOIUrl":"10.3390/ma18061340","url":null,"abstract":"Currently, there is an increasing demand for advanced materials that can address the needs of tissue engineering and have the potential for use in treatments targeting tumor cells, such as black bioactive materials in photothermal therapy. Thus, 3D fibrous scaffolds of black 45S5 bioactive glass were produced using the air-heated solution blow spinning (A-HSBS) technique, with polyvinylpyrrolidone (PVP) serving as a spinning aid and an oxygen vacancy-inducing agent. Glass powder with the same composition was synthesized via the sol-gel route for comparison. The samples were characterized using thermogravimetric analysis, X-ray diffraction, FTIR spectroscopy, and scanning electron microscopy, along with in vitro tests using simulated body fluid (SBF), phosphate-buffered saline (PBS), and TRIS solution. The results showed that PVP enhanced oxygen vacancy formation and stabilized the scaffolds at 600 °C. Doping with Zn and Mg ions reduced crystallization while significantly increasing the fiber diameters. Scaffolds doped with Zn exhibited lower degradation rates, delayed apatite formation, and hindered ionic release. Conversely, Mg ions facilitated greater interaction with the medium and rapid apatite formation, completely covering the fibers. The scaffolds showed no cytotoxicity in the MTT assay at concentrations of up to 200 µg/mL for HaCat cells and 0.8 mg/mL for L929 cells. This study demonstrated the effectiveness of using PVP in the production of black bioactive glass scaffolds, highlighting their potential for bone regeneration.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 6","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11943605/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143719829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation of Ultrafine-Grained Dual-Phase Microstructure by Warm Deformation of Austenite in High-Strength Steel. 高强钢中奥氏体热变形形成超细晶双相组织

IF 3.1 3区材料科学

Materials Pub Date : 2025-03-18 DOI: 10.3390/ma18061341

Wen Shu, Yingqi Fan, Rengeng Li, Qing Liu, Qingquan Lai

{"title":"Formation of Ultrafine-Grained Dual-Phase Microstructure by Warm Deformation of Austenite in High-Strength Steel.","authors":"Wen Shu, Yingqi Fan, Rengeng Li, Qing Liu, Qingquan Lai","doi":"10.3390/ma18061341","DOIUrl":"10.3390/ma18061341","url":null,"abstract":"Thermomechanical processing by applying deformation-induced ferrite transformation (DIFT) is an effective method of producing ultrafine-grained (UFG) ferritic steels, which usually present high yield strength but low strain hardening. In this study, we explored the concept of DIFT in the processing of UFG dual-phase (DP) steel, in order to improve its strain hardening capability and thus its ductility. The processing temperature was reduced to enhance the dislocation storage in austenite. It was found that the warm deformation of austenite induced a dramatic occurrence of DIFT, resulting in the formation of UFG-DP microstructures along the whole thickness of the specimen. In the UFG-DP microstructure, the average ferrite grain size was 1.2 μm and the ferrite volume fraction was 44 vol.%. The observation of twinned martensite suggests the occurrence of carbon partitioning during the DIFT process. The UFG-DP microstructure exhibited a good combination of strength and ductility, which was enabled by the synergy of the ultrafine ferrite grains and the efficient composite effect. The outcome of this study provides a novel pathway to develop advanced hot-rolled steels with a UFG-DP microstructure and which are associated with the advantages of their readiness to be scaled up and low costs.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"18 6","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11943922/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0