Materials Letters: X最新文献_第10页

Green Synthesis of Pure and Silver Doped Copper Oxide Nanoparticles using Moringa Oleifera Leaf Extract 利用辣木叶提取物绿色合成纯和掺银氧化铜纳米颗粒

IF 1.7

Materials Letters: X Pub Date : 2022-03-01 DOI: 10.1016/j.mlblux.2022.100122

D. Reshmi Agnes Preethi, A. Philominal

{"title":"Green Synthesis of Pure and Silver Doped Copper Oxide Nanoparticles using Moringa Oleifera Leaf Extract","authors":"D. Reshmi Agnes Preethi, A. Philominal","doi":"10.1016/j.mlblux.2022.100122","DOIUrl":"10.1016/j.mlblux.2022.100122","url":null,"abstract":"<div><p>With the intense development of nanotechnology, copper oxide nanoparticles have terrible immense applications in electrical, optical and Bio-medical applications. To safeguard the environment and to mortify the toxicity in chemicals, the present work was carried out for synthesizing Pure and Silver (Ag) doped Copper Oxide (CuO) nanoparticles of different concentrations using Moringa Oleifera leaf extract and it shows a good result towards antimicrobial agents. These green synthesized nanoparticles were subjected to characterization techniques, X- ray Diffraction (XRD), Scanning Electron Microscopy (SEM) with Energy Dispersive X- ray Analysis (EDAX), Fourier Transform Infrared spectroscopy (FTIR) and Ultraviolet–Visible spectroscopy (UV). From XRD, the average crystallite size for pure and silver doped copper oxide nanoparticles was found to be in the nanometer range and it belongs to a monoclinic structure. The surface morphology and the elemental compositions of nanoparticles were confirmed by SEM with EDAX. Functional groups were observed by FTIR spectra. From the optical absorption spectrum, the bandgap for pure copper oxide was found to be 1.2 eV, while increasing the dopant concentrations shows enhancing results towards optical properties.</p></div>","PeriodicalId":18245,"journal":{"name":"Materials Letters: X","volume":"13 ","pages":"Article 100122"},"PeriodicalIF":1.7,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590150822000023/pdfft?md5=c8dc705fd73476ef6ab5b1f7c1f5393d&pid=1-s2.0-S2590150822000023-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48173248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

On the eutectic transition of undercooled hypoeutectic Ni-B alloy in the differing heat extraction process 过冷亚共晶Ni-B合金在不同抽热过程中的共晶转变

IF 1.7

Materials Letters: X Pub Date : 2022-03-01 DOI: 10.1016/j.mlblux.2022.100128

Junfeng Xu , Tao Zhang

引用次数: 1

Conversion of carbohydrates (glucose and fructose) into 5-HMF over solid acid loaded natural zeolite (PMA/NZ) catalyst 固体酸负载天然沸石（PMA/NZ）催化剂上碳水化合物（葡萄糖和果糖）转化为5-HMF

IF 1.7

Materials Letters: X Pub Date : 2022-03-01 DOI: 10.1016/j.mlblux.2021.100119

Sonal Gupta, A.B. Gambhire, Renuka Jain

引用次数: 3

Synthesis and characterization of zinc oxide nanoparticles via oxalate co-precipitation method 草酸盐共沉淀法制备氧化锌纳米粒子及其表征

IF 1.7

Materials Letters: X Pub Date : 2022-03-01 DOI: 10.1016/j.mlblux.2022.100126

Natheer B. Mahmood , Farqad R. Saeed , Kadhim R. Gbashi , Um-Salama Mahmood

引用次数: 24

Optimization of performance index of self-sensing spray reactive powder concrete based on response surface methodology 基于响应面法的自敏喷射活性粉末混凝土性能指标优化

IF 1.7

Materials Letters: X Pub Date : 2022-03-01 DOI: 10.1016/j.mlblux.2021.100120

Yunlong Zhang , Jingxin Sun , Jing Wang , Xuesong Qian

{"title":"Optimization of performance index of self-sensing spray reactive powder concrete based on response surface methodology","authors":"Yunlong Zhang , Jingxin Sun , Jing Wang , Xuesong Qian","doi":"10.1016/j.mlblux.2021.100120","DOIUrl":"https://doi.org/10.1016/j.mlblux.2021.100120","url":null,"abstract":"<div><p>This study aims to develop spay reactive powder concrete (SRPC) with excellent mechanical and self-sensing properties by using carbon fiber (CF) as reinforcement material in combination with RPC base mix ratio.A Box–Behnken model was designed using the response surface method to study the influence of silica fume (SF), fly ash (FA), and CF on the compressive strength and strain sensitivity coefficient (SSC) of SRPC with different dosages. Variance regression was used to analyze the interaction of each factor on the index, and multi-index optimization technology was utilized to optimize the response scheme.Results show that the compressive strength is 107.272 MPa and SSC is 34.429 under optimized conditions of 18% SF, 17.097% FA, and 0.5% CF.The strain sensitivity coefficient of SRPC is 5–17 times higher than that of the conventional strain gauge used for monitoring concrete. SRPC was prepared by adjusting the dosage of the water reducer and stirring time at a 0.2 water–binder ratio.</p></div>","PeriodicalId":18245,"journal":{"name":"Materials Letters: X","volume":"13 ","pages":"Article 100120"},"PeriodicalIF":1.7,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590150821000612/pdfft?md5=62c09239c8143fa7443d110f09cb06d1&pid=1-s2.0-S2590150821000612-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72121794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The coal as high performance and low cost anodes for sodium-ion batteries 煤作为钠离子电池的高性能、低成本阳极材料

IF 1.7

Materials Letters: X Pub Date : 2022-03-01 DOI: 10.1016/j.mlblux.2022.100123

Junli Kong, Guanghong Pan, Zhijiang Su

引用次数: 1

Investigations of ion irradiation induced surface damage features in zirconium alloys by atomic force microscopy 用原子力显微镜研究锆合金离子辐照引起的表面损伤特征

IF 1.7

Materials Letters: X Pub Date : 2022-03-01 DOI: 10.1016/j.mlblux.2022.100125

Fusheng Li, Shilei Li, Peng Wang, Yanli Wang

引用次数: 0

Impregnation, silver activating capability and biological applications of ionic liquids 离子液体的浸渍、银活化性能及生物应用

IF 1.7

Materials Letters: X Pub Date : 2022-03-01 DOI: 10.1016/j.mlblux.2022.100134

K. Uma Sivakami , S. Vaideeswaran , A. Rose Venis , J.K. Alphonsa Juliet Helina , M. Balaganesh

引用次数: 1

Development of an axial loading system for fatigue testing of textile-composites at ultrasonic frequencies 超声频率下纺织复合材料疲劳轴向加载系统的研制

IF 1.7

Materials Letters: X Pub Date : 2022-03-01 DOI: 10.1016/j.mlblux.2022.100131

Aravind Premanand , Frank Balle

{"title":"Development of an axial loading system for fatigue testing of textile-composites at ultrasonic frequencies","authors":"Aravind Premanand , Frank Balle","doi":"10.1016/j.mlblux.2022.100131","DOIUrl":"10.1016/j.mlblux.2022.100131","url":null,"abstract":"<div><p>Fiber-reinforced polymers are increasingly used in lightweight applications due to their high specific properties. Different polymer materials, and fiber architectures, are commercially available for structural applications. Performing fatigue experiments on all these combinations of fiber–matrix composites up to 10<sup>9</sup> cycles to mimic their typical lifetime of 15–20 years, at a low testing frequency generally in the range of 5–10 Hz in applications such as the aerospace industry, is expensive and time-consuming. In this study, a test system to investigate the very high cycle fatigue (VHCF) behavior of continuous fiber-reinforced polymers under an axial loading (tension–compression) condition is proposed. To do so, a testing system capable of applying cyclic oscillations at a frequency of 20 kHz and stress ratio, R = -1 was developed. For this investigation, the carbon fiber reinforced in Polyether-ketone-ketone (CF-PEKK) material was chosen. For visualization of the specimen oscillation-mode at 20 kHz, video-imaging using a high-speed camera (HSC) was employed. With the obtained displacement field from the HSC images and with thermography, the desired specimen response due to resonance at 20 kHz is validated.</p></div>","PeriodicalId":18245,"journal":{"name":"Materials Letters: X","volume":"13 ","pages":"Article 100131"},"PeriodicalIF":1.7,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590150822000114/pdfft?md5=f612f2f7f210e598c653fe94a646f3e2&pid=1-s2.0-S2590150822000114-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45762393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Enhancing hot corrosion performance of NiCoCrAlY/AlSiY coating by arc enhanced glow discharge 电弧增强辉光放电增强NiCoCrAlY/AlSiY涂层的热腐蚀性能

IF 1.7

Materials Letters: X Pub Date : 2022-03-01 DOI: 10.1016/j.mlblux.2022.100130

Guanming Xue , Zhiguo Wang , Lin Xiang , Han Xiao , Yanhui Zhao , Yuanyuan Wan , Haiqing Ning , Zhiwen Xie

引用次数: 0