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Polydiacetylene-zinc oxide-zinc(II)-cationic surfactant nanocomposites as colorimetric sensors of various polymers: Effects of solvents and cationic surfactants 聚二乙炔-氧化锌-锌(II)-阳离子表面活性剂纳米复合材料作为各种聚合物比色传感器:溶剂和阳离子表面活性剂的影响
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2025-04-17 DOI: 10.1016/j.materresbull.2025.113500
Sasiwan Boonmak , Mohamed Mehawed Abdellatif , Kotohiro Nomura , Rakchart Traiphol , Nisanart Traiphol
{"title":"Polydiacetylene-zinc oxide-zinc(II)-cationic surfactant nanocomposites as colorimetric sensors of various polymers: Effects of solvents and cationic surfactants","authors":"Sasiwan Boonmak ,&nbsp;Mohamed Mehawed Abdellatif ,&nbsp;Kotohiro Nomura ,&nbsp;Rakchart Traiphol ,&nbsp;Nisanart Traiphol","doi":"10.1016/j.materresbull.2025.113500","DOIUrl":"10.1016/j.materresbull.2025.113500","url":null,"abstract":"<div><div>Polymer industry plays a crucial role in our lifestyle. Different methods have been used to identify polymers, but they are often costly and time-consuming. One of the uncomplicated and worthwhile methods is chromatic sensor. This study demonstrates polydiacetylene (PDA)-based colorimetric sensors for detecting various polymers such as poly(methyl methacrylate), poly(ethylene succinate), poly(propylene carbonate), and aliphatic polyesters. Preparation of the sensors utilizes simple mixing of PDA/zinc(II) ion/zinc oxide nanocomposites and cationic surfactants in organic solvents. Results show that the structures of organic solvents and cationic surfactants strongly affect the sensitivity to specific polymers. Furthermore, the sensors can distinguish polymers with different functional groups. The colorimetric detection of polymers at different concentrations can be achieved by varying the concentration of cation surfactants. The colorimetric sensors is versatile and low-cost, suitable for real-life applications. Our results provide a new developing path of PDA-based colorimetric sensors for qualitative and semi-quantitative analysis of various polymers.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"190 ","pages":"Article 113500"},"PeriodicalIF":5.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Compression deformation mechanism and constitutive description of nickel-based superalloy based on electroplasticity effect 基于电塑性效应的镍基高温合金压缩变形机理及本构描述
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2025-04-16 DOI: 10.1016/j.materresbull.2025.113498
ZhaoPeng Hao, YueShuai Duan, YiHang Fan
{"title":"Compression deformation mechanism and constitutive description of nickel-based superalloy based on electroplasticity effect","authors":"ZhaoPeng Hao,&nbsp;YueShuai Duan,&nbsp;YiHang Fan","doi":"10.1016/j.materresbull.2025.113498","DOIUrl":"10.1016/j.materresbull.2025.113498","url":null,"abstract":"<div><div>Based on the electroplasticity effect, the split Hopkinson pressure bar (SHPB) experiments were conducted on nickel-based superalloy GH4169 under electrically assisted conditions. The dislocation morphology induced by pulse current during material deformation was studied, and the dynamic mechanism of dislocations under the electroplasticity effect was analyzed. According to the experimental results, it was found that the addition of pulse current reduces the dislocations pile-up in the material, promotes dynamic recrystallization, and thus improves the plasticity of the material. To further investigate the effect of electric field on nickel-based superalloy GH4169, the first principles calculation method was used to analyze the influence law of electric field on the phase structure of Ni- γ Phase, AlNi<sub>3</sub>- γʹ, NbNi<sub>3</sub>- γ″. The simulation results show that the application of an electric field reduces the shear modulus and Young's modulus of the material, making it prone to deformation, which is consistent with the results of the pulse current assisted compression experiment. Finally, based on the dislocation thermal activation theory and the Johnson-Cook constitutive model, the energy obtained by dislocations from free electrons and magnetic fields was analyzed. The constitutive equation under pulsed current is established, and the high accuracy of the established constitutive model is verified through experiments.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"190 ","pages":"Article 113498"},"PeriodicalIF":5.3,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
PANI-reinforced-ZnS/PDMS-based flexible hybrid piezo-triboelectric nanogenerator for self-powered wearable electronics and sensing 基于聚苯胺增强zns / pdms的柔性混合压电-摩擦纳米发电机,用于自供电可穿戴电子和传感
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2025-04-16 DOI: 10.1016/j.materresbull.2025.113482
Puneet Sagar, Binay Kumar
{"title":"PANI-reinforced-ZnS/PDMS-based flexible hybrid piezo-triboelectric nanogenerator for self-powered wearable electronics and sensing","authors":"Puneet Sagar,&nbsp;Binay Kumar","doi":"10.1016/j.materresbull.2025.113482","DOIUrl":"10.1016/j.materresbull.2025.113482","url":null,"abstract":"<div><div>The increasing demand for self-powered electronics and wearable sensors requires efficient and cost-effective renewable energy sources. However, conventional individual piezoelectric and triboelectric nanogenerators suffer from limited output performance. To address the challenges, in present work, we have developed PANIx-reinforced-ZnS/PDMS (<em>x</em> = 0, 0.5, 1, 1.5, 2, and 2.5 wt % PANI)-based hybrid piezo-triboelectric nanogenerators (HPTNGs). Piezoelectric ZnS nanoplates and mulberry-shaped PANI nanoparticles were synthesized by hydrothermal and polymerization methods, respectively. The dielectric study revealed that the dielectric constant of ZnS/PDMS increases with increasing PANI concentration. A gradual enhancement in electrical output performance of HPTNG was observed with an increase in PANI concentration. The PANI2.5-ZnS/PDMS-based HPTNG exhibited a high electrical output of ∼ 180 V and ∼ 280 μW/cm². This device was demonstrated to operate commercial devices such as 80 red LEDs, a wristwatch, and a humidity sensor. Also, the HPTNG exhibited remarkable voltage response to various body movements.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"190 ","pages":"Article 113482"},"PeriodicalIF":5.3,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Myco-architecture of proficient antibacterial CuO/Ag2O-grafted graphene oxide nanoconjugates: Characterization and Congo red degradation-assisted by the activation of peroxymonosulfate 高效抗菌CuO/ ag20接枝氧化石墨烯纳米偶联物的菌群结构:表征和刚果红降解-在过氧单硫酸盐活化的辅助下
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2025-04-15 DOI: 10.1016/j.materresbull.2025.113496
Basma A. Omran , M.O. Abdel-Salam , Hebatullah H. Farghal , Mayyada M.H. El-Sayed , Kwang-Hyun Baek
{"title":"Myco-architecture of proficient antibacterial CuO/Ag2O-grafted graphene oxide nanoconjugates: Characterization and Congo red degradation-assisted by the activation of peroxymonosulfate","authors":"Basma A. Omran ,&nbsp;M.O. Abdel-Salam ,&nbsp;Hebatullah H. Farghal ,&nbsp;Mayyada M.H. El-Sayed ,&nbsp;Kwang-Hyun Baek","doi":"10.1016/j.materresbull.2025.113496","DOIUrl":"10.1016/j.materresbull.2025.113496","url":null,"abstract":"<div><div>The engineering of nanobiomaterials aligns with the Sustainable Development Goals and green chemistry principles. Fungi act as highly efficient nano-biofactories due to their ability to produce a wide range of bioactive metabolites and enzymes that facilitate the green synthesis of nanoparticles (NPs) with unique optical, structural, and functional properties. Herein, a <em>Trichoderma virens</em> filtrate was utilized for the bioengineering of a nanoconjugate (NC). A copper oxide/silver oxide-grafted graphene oxide NC (CuO/Ag<sub>2</sub>O@GO) was synthesized by grafting GO with the fungal-engineered CuO and Ag<sub>2</sub>O NPs in a one-pot reaction using 20 mM of CuSO<sub>4</sub>·5H<sub>2</sub>O and AgNO<sub>3</sub>. The optical, structural, and morphological characteristics of the CuO/Ag<sub>2</sub>O@GO NC were thoroughly analyzed. X-ray diffraction showed the formation of diamond carbon with a cubic crystal system, with monoclinic tenorite CuO and cubic Ag<sub>2</sub>O. The average crystallite size of the NC was 21.02 nm. The presence of Cu K, Ag L, O K, and C K was confirmed by energy-dispersive X-ray analysis. The average hydrodynamic size of the synthesized NC was 204.4 nm. The zeta potential analysis of the CuO/Ag<sub>2</sub>O@GO NC was measured to be +10.1 mV, confirming its good stability. The respective D and G bands of the CuO/Ag<sub>2</sub>O@GO NC occurred at wave numbers of 1369 and 1580 cm<sup>−1</sup>. X-ray photoelectron spectroscopy validated the electron-binding affinity of CuO, Ag<sub>2</sub>O, and GO. A Tauc plot was studied using data from a UV–Vis-DRS spectrophotometer, from which the optical band gap was estimated as 2.57 eV. The surface plasmon resonance λ<sub>max</sub> characteristic peaks of GO were observed at 236 and 300 nm, with an absorption band at 450 nm characteristic of the CuO and Ag<sub>2</sub>O NPs. The CuO/Ag<sub>2</sub>O@GO NC demonstrated excellent inhibitory activity against a broad spectrum of pathogenic bacteria using Kirby−Bauer disk diffusion antibacterial testing. For environmental applications, the CuO/Ag<sub>2</sub>O@GO NC displayed efficient peroxymonosulfate-assisted degradation of Congo red with removal efficiencies averaging around 70 % for the initial concentration range of 20–50 ppm. The findings revealed the potency and remarkable performance of the CuO/Ag<sub>2</sub>O@GO NC for environmental applications. Several avenues for future research can further enhance the utility of this composite and address existing challenges by optimizing its synthesis, understanding its mechanisms of action, and exploring its potential in diverse fields.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"190 ","pages":"Article 113496"},"PeriodicalIF":5.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Synergistic effects of electrodeposited Co(OH)2 nanoflakes on O2 plasma treated activated carbon electrodes for supercapacitor 电沉积Co(OH)2纳米片在O2等离子体处理的超级电容器活性炭电极上的协同效应
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2025-04-15 DOI: 10.1016/j.materresbull.2025.113497
Eunseon Chae , Seongjae Myeong , Chung Gi Min , Seoyeong Cheon , In Woo Lee , Young-Seak Lee
{"title":"Synergistic effects of electrodeposited Co(OH)2 nanoflakes on O2 plasma treated activated carbon electrodes for supercapacitor","authors":"Eunseon Chae ,&nbsp;Seongjae Myeong ,&nbsp;Chung Gi Min ,&nbsp;Seoyeong Cheon ,&nbsp;In Woo Lee ,&nbsp;Young-Seak Lee","doi":"10.1016/j.materresbull.2025.113497","DOIUrl":"10.1016/j.materresbull.2025.113497","url":null,"abstract":"<div><div>Co(OH)<sub>2</sub> nanoflakes were electrodeposited on O<sub>2</sub> plasma-treated activated carbon (OAC) electrodes. O<sub>2</sub> plasma treatment introduces oxygen functional groups and simultaneously etches the activated carbon (AC) surface in a short time, maximizing the efficiency of the subsequent electrodeposition process. Electrodeposition enables the rapid and uniform formation of Co(OH)<sub>2</sub> nanoflakes through interactions with oxygen functional groups. The resulting OAC@Co(OH)<sub>2</sub> exhibits excellent cycling stability due to its high surface area and hydrophilic functional groups and achieves a high specific capacitance of up to 244.7 F g<sup>-1</sup>. The OAC@Co600//AC exhibited a capacitance retention of 88.9 % after 10,000 cycles and an energy density of 44.6 Wh kg<sup>-1</sup> at 700 W kg<sup>-1</sup>. The enhanced electrochemical properties were attributed to the synergistic effect of Co(OH)<sub>2</sub> and OAC with hydrophilic functional groups. Thus, we present an efficient way to fabricate hydrophilic AC-based Co(OH)<sub>2</sub> electrodes via electrodeposition.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"190 ","pages":"Article 113497"},"PeriodicalIF":5.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Tuning dielectric and nonohmic properties of CaCu3Ti4O12 ceramics with W doping 掺杂W调整cuu3ti4o12陶瓷的介电和非欧姆性能
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2025-04-14 DOI: 10.1016/j.materresbull.2025.113493
H. Moreno , V.C. Teixeira , M.A. Ponce , C.E. Macchi , C.M. Aldao , V.D.N. Bezzon , A.Z. Simões , M.A. Ramirez
{"title":"Tuning dielectric and nonohmic properties of CaCu3Ti4O12 ceramics with W doping","authors":"H. Moreno ,&nbsp;V.C. Teixeira ,&nbsp;M.A. Ponce ,&nbsp;C.E. Macchi ,&nbsp;C.M. Aldao ,&nbsp;V.D.N. Bezzon ,&nbsp;A.Z. Simões ,&nbsp;M.A. Ramirez","doi":"10.1016/j.materresbull.2025.113493","DOIUrl":"10.1016/j.materresbull.2025.113493","url":null,"abstract":"<div><div>This study investigates the dielectric and nonohmic properties of the CaCu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub>: x % W (<em>x</em> = 0.00, 0.02, 0.010, 2.50, 5.00) denoted as CCTO, W002, W010, W250, and W500, respectively. X-ray diffraction analysis confirmed a pseudo-cubic perovskite phase (Im-3 space group) for samples, and a CaCu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub>/CaWO<sub>4</sub>/TiO<sub>2</sub> composite system for high W content (W250, W500), supported by energy dispersive spectroscopy (EDS) and X-ray fluorescence (XRF) measurements. Positron annihilation lifetime spectroscopy identified <span><math><mrow><msubsup><mi>V</mi><mrow><mi>C</mi><mi>u</mi></mrow><mrow><mo>″</mo></mrow></msubsup><mo>/</mo><msubsup><mi>V</mi><mrow><mi>C</mi><mi>a</mi></mrow><mrow><mo>″</mo></mrow></msubsup></mrow></math></span> vacancies as the main defects induced by W incorporation, influencing charge carrier mobility at grain boundaries, thus affecting sintering, grain size, and morphology. Lower W content (W002) resulted in a high dielectric response (<em>ε</em>∼1.2 × 10<sup>4</sup>) with improved tan<em>δ</em> (0.02). Conversely, W250 exhibited higher nonlinear coefficient (α∼38), with low leakage current (<em>I<sub>L</sub></em>∼14.6 μA/cm<sup>2</sup>) and breakdown voltage (<em>Eb</em>∼198 V. cm<sup>−1</sup>). This solid-state synthesis method provides a way to customize TiO<sub>2</sub>/CaWO<sub>4</sub>-doped CCTO matrices, showcasing promising varistor characteristics that are well-suited for hybrid capacitor-varistor devices and related applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"190 ","pages":"Article 113493"},"PeriodicalIF":5.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Fabrication of carbon quantum dots by microemulsion route: Dual functional materials for energy storage and environmental treatment 微乳液法制备碳量子点:储能和环境处理双重功能材料
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2025-04-14 DOI: 10.1016/j.materresbull.2025.113494
Ayesha Akram, Zohra Nazir Kayani
{"title":"Fabrication of carbon quantum dots by microemulsion route: Dual functional materials for energy storage and environmental treatment","authors":"Ayesha Akram,&nbsp;Zohra Nazir Kayani","doi":"10.1016/j.materresbull.2025.113494","DOIUrl":"10.1016/j.materresbull.2025.113494","url":null,"abstract":"<div><div>In this research, Carbon quantum dots (CQDs) were synthesized by the microemulsion method with a variation of 1- 5 wt. % multi-walled carbon nanotubes (MWCNTs). Varying percentages of MWCNTs affected morphological, structural, antibacterial, photocatalytic, dielectric, electrochemical and optical properties of CQDs. X-ray diffractometer confirmed the formation of the cubic phase of carbon. SEM revealed a granular and a cloud like surface morphology that was not uniform, with a significant number of grain boundaries. FTIR spectroscopy was used to examine the different functional groups. As MWCNTs concentration increased, the band gap of CQDs reduced from 3.89 to 3.5 eV. These CQDs were suitable as absorbing layers for solar panels due to their reduced band gap and ability to absorb the visible portion of the electromagnetic spectrum. The dielectric properties of all CQDs were also examined. AC conductivity was increased with the increased MWCNTs content. Utilizing these CQDs considerably improved the efficiency of supercapacitors, resulting in specific capacitance ranging from 1007.81 to 4531.25 Fg<sup>-1</sup> with high energy and power density. This led to the manufacturing of supercapacitors in modern electrical devices. Furthermore, increasing MWCNTs concentration enhanced the photocatalytic properties of CQDs. These synthesized nanoparticles exhibit improved photocatalytic activity due to increased UV–VIS light absorption and decreased recombination of photoinduced electron-hole pairs. CQDs have strong antibacterial activity, especially against <em>salmonella enterica.</em> These CQDs have significance in supercapacitors and water treatment.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"190 ","pages":"Article 113494"},"PeriodicalIF":5.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 cost-effective approach to fabricate (1-x)KBiFe2O5-(x)CoFe2O4 multiferroic composites prepared via citric-assisted sol-gel method 柠檬酸辅助溶胶-凝胶法制备(1-x)KBiFe2O5-(x)CoFe2O4多铁复合材料
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2025-04-14 DOI: 10.1016/j.materresbull.2025.113495
D.P. Sahu , A. Mohanty , G. Palai , K. Chandrakanta , R. Jena , N. Mohapatra , S.D. Kaushik , U.K. Goutam , A.K. Singh
{"title":"A cost-effective approach to fabricate (1-x)KBiFe2O5-(x)CoFe2O4 multiferroic composites prepared via citric-assisted sol-gel method","authors":"D.P. Sahu ,&nbsp;A. Mohanty ,&nbsp;G. Palai ,&nbsp;K. Chandrakanta ,&nbsp;R. Jena ,&nbsp;N. Mohapatra ,&nbsp;S.D. Kaushik ,&nbsp;U.K. Goutam ,&nbsp;A.K. Singh","doi":"10.1016/j.materresbull.2025.113495","DOIUrl":"10.1016/j.materresbull.2025.113495","url":null,"abstract":"<div><div>This article investigates temperature-dependent magnetic, dielectric, and magnetoelectric (MD) properties of KBiFe<sub>2</sub>O<sub>5</sub>(KBFO)-CoFe<sub>2</sub>O<sub>4</sub>(CFO) composite, synthesized via the citric-assisted sol-gel method. The addition of CFO reduces the average grain size from 2.01 µm (KBFO) to 0.23 µm (0.7KBFO-0.3CFO). As the temperature declined, the improved <em>M<sub>R</sub></em> and <em>H<sub>C</sub></em> changes from 0.3768 ± 0.0018 to 0.8726 ± 0.0018 μ<sub>B</sub>/f.u. for 0.7KBFO-0.3CFO and 1196.3167±5.1481 to 20,986.7336±37.2229 Oe for 0.8KBFO-0.2CFO, respectively. The improved dielectric permittivity introduces a pronounced MD response. The dielectric permittivity at 300 K increased significantly from 35 (KBFO) to 155 in the 0.8KBFO-0.2CFO composite. In ±1.3T magnetic field, KBFO shows nearly 3.2 % MD coupling. However, the 20 % incorporation of CFO improves coupling to ∼17 %. Observed MD coupling involves a combination of Maxwell-Wagner polarization and dipolar relaxation. The significant dispersion at low temperatures suggests the presence of dielectric relaxation phenomena. In our finding, 0.8KBFO-0.2CFO is recommended as a sustainable multiferroic composite for low-energy data storage and information processing from cryogenic to RT and above.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"190 ","pages":"Article 113495"},"PeriodicalIF":5.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Green synthesis and waterbath evaluation of antibacterial, photocatalytic, and antioxidant properties in Mn, Sm-Mn doped and composite nanoparticles derived from Dodonaea viscosa leaves extract 杜鹃叶提取物中Mn、Sm-Mn掺杂和复合纳米颗粒的绿色合成及其抗菌、光催化和抗氧化性能的水浴评价
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2025-04-14 DOI: 10.1016/j.materresbull.2025.113487
Uday Singh Thakur , Kuldeep Kumar , Kamal Jeet , Sunil Kumar , Naveen Thakur
{"title":"Green synthesis and waterbath evaluation of antibacterial, photocatalytic, and antioxidant properties in Mn, Sm-Mn doped and composite nanoparticles derived from Dodonaea viscosa leaves extract","authors":"Uday Singh Thakur ,&nbsp;Kuldeep Kumar ,&nbsp;Kamal Jeet ,&nbsp;Sunil Kumar ,&nbsp;Naveen Thakur","doi":"10.1016/j.materresbull.2025.113487","DOIUrl":"10.1016/j.materresbull.2025.113487","url":null,"abstract":"<div><div>The Mn pure, Sm-Mn doped, and Sm-Mn composite nanoparticles (NPs) were synthesized using <em>Dodonaea viscosa</em> L (DV) leaf extract. Mn and Sm were combined in ratios of 98:02 and 50:50 for doped and composite NPs respectively, and the mixture was kept at a controlled temperature in a waterbath under standard laboratory conditions. Various spectroscopic techniques were employed to characterize the synthesized samples. X-ray diffraction (XRD) patterns confirmed their crystallinity, with particle sizes estimated to range from 10 to 16 nm. Scanning electron microscopy (SEM) images revealed predominantly rod-like structures for pure Mn NPs, while Sm-Mn doped and composite NPs displayed a mix of spherical and rod-like shapes. Transmission electron microscopy (TEM) analysis indicated average NPs sizes ranging from 13 to 23 nm. Elemental and organic compositions were confirmed by energy-dispersive X-ray spectroscopy (EDX) and Fourier-transform infrared spectroscopy (FTIR) analysis. The energy band gaps ranged between 2.0 and 2.82 eV. X-ray photoelectron spectroscopy (XPS) analysis affirmed the purity of the synthesized materials. Antibacterial activity against human pathogens Gram-positive bacteria <em>Staphylococcus aureus</em> (<em>S.aureus</em>), and <em>Bacillus subtilis</em> (<em>B. subtilis</em>), and Gram-negative bacteria <em>Escherichia coli</em> (<em>E. coli</em>) was evaluated using the well diffusion method. Furthermore, Sm-Mn doped NPs exhibited highly efficient photocatalytic degradation for methyl orange (95.63 %), congo red (94.29 %), and methylene blue (94.95 %) dyes within 90 min. The highest antioxidant activity (91.95 %) was observed with Sm-Mn doped NPs.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"190 ","pages":"Article 113487"},"PeriodicalIF":5.3,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Preparation of zeolite by green synthesis from steel industry by-product LD-slag and its application for photodegradation 钢铁副产ld -渣绿色合成沸石及其在光降解中的应用
IF 5.3 3区 材料科学
Materials Research Bulletin Pub Date : 2025-04-12 DOI: 10.1016/j.materresbull.2025.113492
Niladri Shekhar Samanta , Mihir Kumar Purkait
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