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Green synthesis of Ni-doped nanohydroxyapatite for photocatalysis and antibacterial agent applications 绿色合成掺杂镍纳米羟基磷灰石用于光催化和抗菌剂的应用
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-23 DOI: 10.1016/j.matlet.2025.138621
Is Fatimah , Nunung Nurlaela , Anas Zahra Fauziyyah , Habibi Hidayat , Muhammad Fauzi Daud , Suresh Sagadevan
{"title":"Green synthesis of Ni-doped nanohydroxyapatite for photocatalysis and antibacterial agent applications","authors":"Is Fatimah ,&nbsp;Nunung Nurlaela ,&nbsp;Anas Zahra Fauziyyah ,&nbsp;Habibi Hidayat ,&nbsp;Muhammad Fauzi Daud ,&nbsp;Suresh Sagadevan","doi":"10.1016/j.matlet.2025.138621","DOIUrl":"10.1016/j.matlet.2025.138621","url":null,"abstract":"<div><div>Green chemistry approach was applied to synthesize nickel-doped nanohydroxyapatite (Ni/nHA). Miana (<em>Coleus scutellarioides)</em> extract was utilized as a reducing agent in nickel nanoparticles (NiNPs) preparation for being a dopant to nHA by hydrothermal method. The successful synthesis was confirmed from XRD, TEM, SEM, UV-DRS, XPS and FTIR, analysis demonstrating the formation and crystallinity of the nanocomposite with particle size distributed at range of 10–50 nm. Ni/nHA has the band gap energy of 3.31 eV which facilitate its photocatalytic performance. Rhodamine B degradation efficiency of 99.84 % during 15 of photocatalytic oxidation suggests the high photoactivity. In addition, the Ni/nHA exhibits a good antibacterial activity against <em>Eschericia coli</em> and <em>Staphylococcus aureus</em>.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"394 ","pages":"Article 138621"},"PeriodicalIF":2.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877625","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
A novel glass fiber − flexible silicone aerogel composite with improvement of thermal insulation, hydrophobicity and mechanical properties 一种新型玻璃纤维-柔性硅气凝胶复合材料，可改善隔热性、疏水性和机械性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-23 DOI: 10.1016/j.matlet.2025.138626
Haixia Yang, Yunhua Yu, Ping An
{"title":"A novel glass fiber − flexible silicone aerogel composite with improvement of thermal insulation, hydrophobicity and mechanical properties","authors":"Haixia Yang,&nbsp;Yunhua Yu,&nbsp;Ping An","doi":"10.1016/j.matlet.2025.138626","DOIUrl":"10.1016/j.matlet.2025.138626","url":null,"abstract":"<div><div>Glass fiber is used as an inexpensive insulation material in construction, energy and aerospace applications, but brittleness and a significant reduction in insulation efficiency under humid conditions are obvious drawbacks. By impregnating the silica-based aerogel with glass fiber, the flexible aerogel can be observed growing attached to the fiber inside the composite, and filling the large pores between fibers and thus improving the overall performance of the material. The composite exhibits a superhydrophobicity (152°), good flexibility and strong mechanical stability. The composite shows a low thermal conductivity of 0.031 Wm<sup>-1</sup>K<sup>−1</sup> and achieved a temperature difference of Δ81.1 °C in hot plate experiments at temperatures of 150 °C. This glass fiber − flexible aerogel composite can provide excellent thermal isolation and protection for industrial equipment in complex environments.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"394 ","pages":"Article 138626"},"PeriodicalIF":2.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873995","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 magnetoelectric response in PVDF/CoFe2O4/Ni films via scalable fabrication and self-aligned β-phase formation PVDF/CoFe2O4/Ni薄膜磁电响应的可扩展制备和自对准β相形成
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-23 DOI: 10.1016/j.matlet.2025.138631
Seonmin Jang , Byung-Il Noh , Su Chul Yang
{"title":"Enhanced magnetoelectric response in PVDF/CoFe2O4/Ni films via scalable fabrication and self-aligned β-phase formation","authors":"Seonmin Jang ,&nbsp;Byung-Il Noh ,&nbsp;Su Chul Yang","doi":"10.1016/j.matlet.2025.138631","DOIUrl":"10.1016/j.matlet.2025.138631","url":null,"abstract":"<div><div>Polymer-based magnetoelectric (ME) films have emerged as key materials in the development of next-generation devices due to their unique ability to couple magnetic and electric fields. In this work, we propose an efficient and scalable fabrication method for polymer-based ME sensors, utilizing polyvinylidene fluoride (PVDF), CoFe<sub>2</sub>O<sub>4</sub> (CFO), and nickel (Ni) through spin-coating and bar-casting techniques. The spin-coated CFO layer on Ni foils enhances magnetic susceptibility and promotes the formation of self-aligned β-phases at the CFO/PVDF interface, thereby obviating the need for a conventional electrical poling process. The fabricated ME films, with a high β-phase content of 93.7 %, exhibited a gradient magnetoelectric voltage coefficient (Δα<sub>ME</sub>) of 14.69 mV/cm·Oe within a DC magnetic field (H<sub>dc</sub>) range of −60 to 60 Oe. This pronounced Δα<sub>ME</sub> response indicates that the ME films are highly sensitive to small magnetic field variations, making them well-suited for applications requiring precise magnetic field detection. The demonstrated sensitivity suggests potential use in the development of advanced magnetoelectric sensors.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"394 ","pages":"Article 138631"},"PeriodicalIF":2.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874070","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
A novel N-doped porous carbon derived from PET fiber waste for efficient peroxydisulfate-activated degradation of BPA 从PET纤维废料中提取一种新型n掺杂多孔碳，用于高效过硫酸盐活化降解双酚A
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-23 DOI: 10.1016/j.matlet.2025.138632
Jiaoxia Sun, Fan Yang, Xi Wang, Yuzan Du, Jianxin Fan
{"title":"A novel N-doped porous carbon derived from PET fiber waste for efficient peroxydisulfate-activated degradation of BPA","authors":"Jiaoxia Sun,&nbsp;Fan Yang,&nbsp;Xi Wang,&nbsp;Yuzan Du,&nbsp;Jianxin Fan","doi":"10.1016/j.matlet.2025.138632","DOIUrl":"10.1016/j.matlet.2025.138632","url":null,"abstract":"<div><div>A nitrogen-doped hierarchical porous carbon (MPC-N) was synthesized from polyethylene terephthalate (PET) fiber waste via a facile and eco-friendly strategy. PET fibers were pretreated with sodium hydroxide (NaOH)-ethanol solution containing tris(2-aminoethyl)amine (TAEA) to form a carbon precursor, followed by pyrolysis at 700 °C under N<sub>2</sub>. The resulting MPC-N exhibited a high specific surface area (427.01 m<sup>2</sup>/g) and abundant nitrogen/oxygen functional groups, enabling efficient activation of peroxydisulfate (PS) for rapid degradation of bisphenol A (BPA). In the MPC-N/PS system, 20 mg/L BPA was completely degraded within 10 min, with minimal interference from inorganic ions or natural organic matter. This work provides a dual solution to plastic waste recycling and organic pollutant remediation.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"394 ","pages":"Article 138632"},"PeriodicalIF":2.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869984","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
Bacterial cellulose/Ti3C2Tx MXene hybrid fiber for high-performance flexible fiber-shaped supercapacitors 细菌纤维素/Ti3C2Tx MXene混合纤维用于高性能柔性纤维形超级电容器
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-23 DOI: 10.1016/j.matlet.2025.138627
Yang Zhang , Shaoyi Wu , Yusen Wang , Xiangxiang Pi , Diwei Gu , Shenao Zhang , Jian Xu , Kangxin Qi , Wangyang Lu
{"title":"Bacterial cellulose/Ti3C2Tx MXene hybrid fiber for high-performance flexible fiber-shaped supercapacitors","authors":"Yang Zhang ,&nbsp;Shaoyi Wu ,&nbsp;Yusen Wang ,&nbsp;Xiangxiang Pi ,&nbsp;Diwei Gu ,&nbsp;Shenao Zhang ,&nbsp;Jian Xu ,&nbsp;Kangxin Qi ,&nbsp;Wangyang Lu","doi":"10.1016/j.matlet.2025.138627","DOIUrl":"10.1016/j.matlet.2025.138627","url":null,"abstract":"<div><div>Effective design and construction of robust, flexible and highly electrochemical fiber shaped electrode with hierarchical nanostructures are critical for wearable energy storage device. Here, bacterial cellulose (BC) intercalated Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> (BCT) fiber was fabricated by wet spinning method for fiber shaped supercapacitors (FSC). BC can significantly impede the self-restacking of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> flakes causing a porous structure and connect the adjacent Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> sheets constructing high mechanical strength. As a result, the BCT fiber provides high capacitance and good rate performance in three-electrode system. Moreover, the assembled symmetrical FSC based on BCT fiber presents favorable mass capacitance and excellent energy density, demonstrating a bright future in smart wearable system.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"394 ","pages":"Article 138627"},"PeriodicalIF":2.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874069","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 quinoline extraction temperature on mechanical properties of self-sintering carbon blocks prepared from green petroleum coke 喹啉萃取温度对绿色石油焦自烧结炭块力学性能的影响
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-23 DOI: 10.1016/j.matlet.2025.138628
Jiao Tan , Pei Gong , Xueli Wu , Xun He , Yixing Chen , Cheng Yang , Run Li , Chuanjun Tu
{"title":"Effect of quinoline extraction temperature on mechanical properties of self-sintering carbon blocks prepared from green petroleum coke","authors":"Jiao Tan ,&nbsp;Pei Gong ,&nbsp;Xueli Wu ,&nbsp;Xun He ,&nbsp;Yixing Chen ,&nbsp;Cheng Yang ,&nbsp;Run Li ,&nbsp;Chuanjun Tu","doi":"10.1016/j.matlet.2025.138628","DOIUrl":"10.1016/j.matlet.2025.138628","url":null,"abstract":"<div><div>Binderless self-sintering technology using green petroleum coke (GPC) as raw material is a convenient, efficient and cost-effective approach for preparing carbon graphite materials. However, it becomes difficult to get high-performance and high-yield carbon blocks as GPC contains a large number of small molecule compounds, which will volatilize from green body during the self-sintering process, resulting in pores and microcracks defects. Herein, we propose quinoline extraction at different temperatures to remove low molecular weight compounds, i.e., quinoline soluble fraction, from GPC. The quinoline-modified GPC demonstrates enhanced thermal stability and molecular uniformity, facilitating better carbonization, even though the quinoline soluble fractions at different temperatures mainly exhibit differences in solubility. The obtained carbon blocks C-GPQ-90 demonstrates highest flexural strength (1.71 times) and compressive strength (1.73 times) than pristine GPC counterparts due to the lower porosity, the more compact microstructure, and the smaller graphite crystallite. The current approach offers an important platform to improve the mechanical properties and microstructure of the GPC products.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"394 ","pages":"Article 138628"},"PeriodicalIF":2.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869987","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 curing temperature on the hydration process of carbon nanotubes modified face slab concrete at the ultra-early age 养护温度对超早龄期碳纳米管改性面板混凝土水化过程的影响
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-23 DOI: 10.1016/j.matlet.2025.138633
Zhigang Zhao , Yining Hu , Zhifang Zhao , Yanming Liu , Chengzhuo Xie , Zhuojun Hu
{"title":"Effect of curing temperature on the hydration process of carbon nanotubes modified face slab concrete at the ultra-early age","authors":"Zhigang Zhao ,&nbsp;Yining Hu ,&nbsp;Zhifang Zhao ,&nbsp;Yanming Liu ,&nbsp;Chengzhuo Xie ,&nbsp;Zhuojun Hu","doi":"10.1016/j.matlet.2025.138633","DOIUrl":"10.1016/j.matlet.2025.138633","url":null,"abstract":"<div><div>The curing temperature is an important reason for the cracking of rock-fill dam face slab concrete (FSC) at early age. This paper established a Krstulovic-Dabic hydration kinetics model through XRD experiments and isothermal calorimetry (IC) experiments, and investigated the effects of curing temperature and carbon nanotubes (CNTs) on the hydration process of FSC at ultra-early age within 24 h. The results indicated that the K-D model was helpful in analyzing the hydration mechanism of FSC. The increase of curing temperature significantly accelerated the hydration reaction rate of FSC during the ultra-early age period. The addition of CNTs was beneficial for changing the crystal phase of calcium hydroxide (CH), increasing the crystallinity of CH, promoting the nucleation and growth of hydration products, and thereby improving the microstructure of FSC to enhance its cracking resistance.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"394 ","pages":"Article 138633"},"PeriodicalIF":2.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873994","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 UV post-curing on the mechanical properties of photopolymer resin in stereo-lithographic 3D printing UV后固化对光刻3D打印中光聚合物树脂力学性能的影响
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-23 DOI: 10.1016/j.matlet.2025.138587
Samir Bouchareb , Rachida Doufnoune
{"title":"Effect of UV post-curing on the mechanical properties of photopolymer resin in stereo-lithographic 3D printing","authors":"Samir Bouchareb ,&nbsp;Rachida Doufnoune","doi":"10.1016/j.matlet.2025.138587","DOIUrl":"10.1016/j.matlet.2025.138587","url":null,"abstract":"<div><div>This research work focused on studying the effect of post-curing on the mechanical properties of stereolithography 3D-printed samples. These samples were subjected to different times of UV post-curing at 37 °C. The IRTF-ATR analysis showed that the UV post-curing acts to break the double bond contained in the acrylic structure of the residual monomers and oligomers and allow them to add to the polymer chains formed during printing and help to create cross-links between these chains. The mechanical performance of the different samples was evaluated using the tensile and impact test, where the results showed that the best mechanical properties were recorded by the samples that were post-cured for 60 min.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"394 ","pages":"Article 138587"},"PeriodicalIF":2.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869981","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
Morphology-dependent electrochemical properties of Ni metal-organic phosphates for supercapacitor electrode materials 镍金属-有机磷酸盐超级电容器电极材料的形态依赖性电化学性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-22 DOI: 10.1016/j.matlet.2025.138617
Xiaocai Ma, Li Yu, Xinhua Cao
{"title":"Morphology-dependent electrochemical properties of Ni metal-organic phosphates for supercapacitor electrode materials","authors":"Xiaocai Ma,&nbsp;Li Yu,&nbsp;Xinhua Cao","doi":"10.1016/j.matlet.2025.138617","DOIUrl":"10.1016/j.matlet.2025.138617","url":null,"abstract":"<div><div>The electrochemical properties of Ni metal-organic phosphates (Ni-MOPhs) synthesized at various time intervals (Ni-MOPh-Ts) were investigated to elucidate the correlation between morphology and supercapacitor performance. This study revealed that prolonged synthesis durations resulted in a higher density of smaller flakes on the surface, thereby enhancing the formation of active sites and improving charge transfer rates for Ni-MOPh-Ts.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"394 ","pages":"Article 138617"},"PeriodicalIF":2.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873996","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
Designed optimization of photoluminescence emission for carbon dots with bright blue emission at 416 nm and mono-exponential decay lifetime 设计了416 nm亮蓝色发光碳点的光致发光优化和单指数衰减寿命
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-04-22 DOI: 10.1016/j.matlet.2025.138615
Mohammed Abbas Ruwaih , Ehsan Soheyli , Jalil Naji , Evren Mutlugun , Tavan Kikhavani , Reza Sahraei
{"title":"Designed optimization of photoluminescence emission for carbon dots with bright blue emission at 416 nm and mono-exponential decay lifetime","authors":"Mohammed Abbas Ruwaih ,&nbsp;Ehsan Soheyli ,&nbsp;Jalil Naji ,&nbsp;Evren Mutlugun ,&nbsp;Tavan Kikhavani ,&nbsp;Reza Sahraei","doi":"10.1016/j.matlet.2025.138615","DOIUrl":"10.1016/j.matlet.2025.138615","url":null,"abstract":"<div><div>The presented study introduces optimized blue-emissive carbon dots (CDs) with high photoluminescence efficiency up to 65 % at 416 nm, large Stokes shift (69 nm), and full-width at half maximum (FWHM) of 73 nm. X-ray photoelectron spectroscopy confirmed the formation of carbon-based bonds as the main component of CDs, with reliable amounts of O, S, and N as dopant components. These features, along with single-exponential time-decay profile at long average lifetime of 10.05 ns, supported the significant role of uniformly distributed mid-gap energy levels in the recombination process. The simplicity, low-cost, non-toxicity, and short reaction time of CDs, along with their excellent emission properties in the deep-blue region, make them suitable for use in environmental monitoring and high-contrast bioimaging.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"394 ","pages":"Article 138615"},"PeriodicalIF":2.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864973","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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