Materials Science and Engineering: B最新文献

{"title":"Enhanced thermoelectric performance of Bi0.5Sb1.5Te3 alloys via amorphous glass particle integration","authors":"Reyhan Başar Boz ,&nbsp;Cem Sevik ,&nbsp;Servet Turan","doi":"10.1016/j.mseb.2025.118544","DOIUrl":"10.1016/j.mseb.2025.118544","url":null,"abstract":"<div><div>Enhancing thermoelectric performance requires optimizing both power factor and thermal conductivity, a key challenge addressed through innovative composite strategies. In this study, milled amorphous glass particles (GPs) produced by high-energy ball milling (wt%) were added to BiSbTe-based alloys, and composites were obtained by spark plasma sintering. The results indicate that as the GPs content increases, the thermal conductivity (<span><math><mi>k</mi></math></span>) decreases, which is 6% lower than the BiSbTe matrix owing to enhanced phonon scattering of particles as well as a combination of different scattering mechanisms, including point defects, grain boundaries, and dislocations. This can provide a platform for maximizing the reduction of lattice thermal conductivity through the scattering of a full spectrum of phonons from low to high frequencies. Electrical conductivity increased by 10% with higher GPs content, while the Seebeck coefficient remained nearly constant, indicating a promising way to reduce thermal conductivity while enhancing electrical performance.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118544"},"PeriodicalIF":3.9,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471627","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}

{"title":"Nanoarchitectonic design of PVDF-Fe2O3 thick films: unveiling magnetic and electrical properties of functionalized nanocomposite","authors":"P. Kour ,&nbsp;S.K. Pradhan ,&nbsp;Jyotirekha Mallick ,&nbsp;L.K. Pradhan ,&nbsp;Sunil Kumar ,&nbsp;Pawan Kumar ,&nbsp;Piyali Biswas ,&nbsp;Anant Shukla ,&nbsp;Amar Dev ,&nbsp;Manoranjan Kar","doi":"10.1016/j.mseb.2025.118547","DOIUrl":"10.1016/j.mseb.2025.118547","url":null,"abstract":"<div><div>The current study delves into the influence of nanofiller content composed of nanocrystalline Fe₂O₃ on various aspects of polyvinylidene fluoride (PVDF) nanocomposite, encompassing crystal structure, dielectric characteristics, magnetic attributes, and ferroelectric properties. Structural examination underscores the augmentation of the polar <em>β</em> phase as the nanofiller (Fe₂O₃) content rises, particularly up to 6 wt% in the nanocomposite thick film. As the concentration of nanofillers increases, there is a corresponding escalation in dielectric permittivity. This effect reaches its peak in the nanocomposite thick film containing 6 wt% of nanocrystalline Fe₂O₃ filler. The same composition exhibits a distinctive M−H curve, showcasing maximum saturation in comparison to other compositions. Furthermore, the highest magnetic storage energy, electric storage density, and anisotropy constant are observed in this particular composition. This work presents a multifunctional composite integrating ferroelectric and magnetic properties, ideal for compact, flexible, and portable electronics amid rising demand for integrated systems.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118547"},"PeriodicalIF":3.9,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365221","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}

{"title":"Facile synthesis of water hyacinth stem derived activated carbon modified MnO2/Fe3O4 ternary composites for efficient photocatalytic degradation of methylene blue under visible light irradiation","authors":"Eneyew Tilahun Bekele ,&nbsp;Bedasa Abdisa Gonfa ,&nbsp;Dereje Tsegaye Leku ,&nbsp;C.R. Ravikumar ,&nbsp;Syed Khasim ,&nbsp;Yilkal Dessie","doi":"10.1016/j.mseb.2025.118525","DOIUrl":"10.1016/j.mseb.2025.118525","url":null,"abstract":"<div><div>Nowadays environmental pollution, most dominantly water pollution caused by numerous point and non-point sources has been at alarming stage globally. Water pollution mostly facilitated by the expansion of industrialization, population size increment, threat of climate change, and urbanization. This global challenging problem needs global solutions and one of the effective and efficient protocols is fabrication of nano-sized advanced high porous catalysts. In the current findings, manganese oxide (MnO₂)-iron oxide (Fe₃O₄) modified with activated carbon (AC), (MnO₂/Fe₃O_4/AC) ternary composite catalysts were fabricated by adding 4 %, 8 %, and 12 % w/v of AC in the presence of Water Hyacinth (WH) leaf extract. Initially, AC was produced from stem of WH via modification using K₂CO₃ and KOH. Then, different amounts of AC was mixed with MnO₂/Fe₃O₄ nanocomposites (NCs) followed by characterization using thermal gravimetry coupled with differential thermal analysis (TGA/DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled energy dispersive spectroscopy (SEM-EDS), transmission electron microscopy (TEM/HRTEM with SAED), Brunauer-Emmett-Teller (BET), UV–Vis Diffuse Reflectance Spectroscopy (UV–Vis DRS) and Fourier Transform Infrared Spectroscopy (FTIR). The synthesized materials were used as high porous catalyst for the photocatalytic degradation of methylene blue (MB) dye under visible light irradiation. Synthesized materials were thermally stable above 400 °C. The morphology of the materials were spherical in morphology and highly porous. Percent of MB degradation using MnO₂, Fe₃O_4, MnO₂/Fe₃O_4, MnO₂/Fe₃O_4/4%AC_, MnO₂/Fe₃O_4/8%AC and MnO₂/Fe₃O_4/12 %AC were 82.0 %, 78.2 %, 78.3 %, 83.8 %, 87.2 % and 75.7 %, respectively. The MnO₂/Fe₃O_4/8%AC catalyst was most efficient and effective at pH 7, catalyst dose of 4 mg, and MB dye concentration of 10 ppm as compared to counterparts due to small crystalline size, large surface area, and porous size and enhanced light absorption behavior. AC was found to improve the surface area and so enhance the degradation of ability of MnO₂/Fe₃O₄ NCs.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118525"},"PeriodicalIF":3.9,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471628","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}

{"title":"Role of surface oxygen-deficiency on optical and charge storage capacity of frustrated cerium doped zirconium oxides nanoparticles","authors":"Palani Periyasamy ,&nbsp;Santhosh Sacratees ,&nbsp;Bakkiyaraj Ramanujam ,&nbsp;Arulmani Subramanian ,&nbsp;Rajasekaran Loganathan","doi":"10.1016/j.mseb.2025.118536","DOIUrl":"10.1016/j.mseb.2025.118536","url":null,"abstract":"<div><div>The present work aims to induce three different oxygen vacancies in frustrated tetragonal zirconium oxide nanoparticles by cerium doping and identify its role on modifications in the structure, optical, and charge storage properties. XRD and Raman results revealed that all samples were crystallized into a frustrated tetragonal phase due to surface oxygen vacancies. XPS results confirmed the purity/composition of sample, presence of mixed 4+/3+ states of Zr and Ce. Optical band gap measurements showed an indirect band gap ranges from 3.38 to 3.23 eV. The sample CeZ2 showed better dielectric constant of 493 at 100 kHz and charge storage performance of 152.4 F/g at current density of 1.5 A/g with an electrochemical (EC) retention of about 93.75 % up to 1100 cycles can be a better choice of electrode for batteries/supercapacitors applications. Samples CeZ1 and CeZ3 with moderate EC performance due to poor electronic conductivity can be used in electro-ceramic applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118536"},"PeriodicalIF":3.9,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471626","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}

{"title":"First-principles discovery of half-metallicity in lead-free CsBCl3(B = Ti, V, Cr) halide perovskites for spintronic and spin-dependent applications","authors":"J. Islah ,&nbsp;N. El Hidaoui ,&nbsp;F. Goumrhar ,&nbsp;R. Ahl Laamara ,&nbsp;H. Ez-Zahraouy","doi":"10.1016/j.mseb.2025.118504","DOIUrl":"10.1016/j.mseb.2025.118504","url":null,"abstract":"<div><div>We employ density functional theory (DFT) combined with Monte Carlo simulations to investigate the structural, electronic, magnetic, and mechanical properties of lead-free halide perovskites CsBCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> (B = Ti, V, Cr). Our findings reveal that CsTiCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> and CsCrCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> exhibit half-metallic ferromagnetism with wide spin-down band gaps and 100% spin polarization, making them promising candidates for spintronic applications. In contrast, CsVCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> stabilizes in an antiferromagnetic semiconducting ground state with a band gap of 3.03 eV (GGA+U), indicating potential for optoelectronic use. By mapping exchange interactions from first-principles onto a classical Heisenberg model and performing Monte Carlo simulations, we estimate Curie temperatures of approximately 200 K and 240 K for CsTiCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> and CsCrCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>, respectively, confirming their finite-temperature magnetic stability. Among them, CsCrCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> exhibits the strongest magnetic exchange, highest <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>C</mi></mrow></msub></math></span>, and notable mechanical resilience (bulk modulus = 34.51 GPa, Pugh’s ratio = 1.76), underscoring its suitability for moderate-temperature spintronic applications. Phonon dispersion analyses confirm the dynamical stability of all three compounds in their cubic phase.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118504"},"PeriodicalIF":3.9,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338785","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}

{"title":"Detection and adsorption of cefixime and methylene blue in aqueous solution by using hydroxyl-functionalized MOF nanostructure MIL-101","authors":"Milad Mosallanezhad ,&nbsp;Reza Farahmand ,&nbsp;Ali Reza Solaimany Nazar ,&nbsp;Mehrdad Farhadian ,&nbsp;Hamid Reza Karimi","doi":"10.1016/j.mseb.2025.118524","DOIUrl":"10.1016/j.mseb.2025.118524","url":null,"abstract":"<div><div>MIL-101-OH, a hydroxyl-functionalized metal–organic framework (MOF), was synthesized as a nanostructured adsorbent to detect and eliminate methylene blue (MB) and cefixime (CEF) from aqueous solutions. To improve its interaction with pollutants, MIL-101 was post-synthetically modified with hydroxyl group. BET analysis showed a specific surface area of 1367 m²/g, and FTIR and XRD analyses verified the structural integrity and successful functionalization. The uniform distribution of particle sizes was shown by SEM imaging. To enable detection based on changes in the refractive index, the functionalized MOF was also used as a coating material on an optical fiber sensor. CEF and MB had maximum adsorption capacities of 328 mg/g and 358 mg/g, respectively. The results demonstrate the potential of MIL-101-OH for simultaneous adsorption and optical sensing applications in water treatment. The sensor demonstrated a linear dynamic range of 0–10 mg/L with response times of 75and 32 s for CEF and MB, respectively.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118524"},"PeriodicalIF":3.9,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365725","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}

{"title":"A comparison analysis on electrical conductivity relaxation methods","authors":"Chengjie Gong ,&nbsp;Wenbo Ma ,&nbsp;Tong Liu ,&nbsp;Yanxiang Zhang ,&nbsp;Mufu Yan","doi":"10.1016/j.mseb.2025.118500","DOIUrl":"10.1016/j.mseb.2025.118500","url":null,"abstract":"<div><div>This study compares the Distribution of Characteristic Times (DCT) and ECRTOOLS for analyzing oxygen transport kinetics in mixed ionic-electronic conductors (MIECs). Experimental validation on dense Sr₂Fe_1.5Mo_0.5O₆₋<em>_δ</em>(SFM)<!--> <!-->under stepwise oxygen partial pressure changes demonstrates that ECRTOOLS, relying on three-dimensional Fickian diffusion and single-mechanism assumptions, fails to accurately fit data. In contrast, DCT converts time-domain relaxation into frequency-domain spectra, resolving multi-mechanistic dynamics via characteristic time distributions. DCT distinguishes surface exchange control (single peak), bulk diffusion control (τ_P1/τ_P2 = 9), and mixed control (τ_P1/τ_P2 &gt; 9), achieving lower residuals than ECRTOOLS. While ECRTOOLS yields unphysical parameters violating Biot number consistency, DCT captures synergistic oxygen vacancy-surface exchange interactions. Challenges persist in interpreting non-ideal spectral artifacts and linking peaks to microstructural properties. This work establishes DCT as a superior tool for probing complex transport mechanisms, advancing the design of electrochemical devices like solid oxide fuel cells.^{[email protected]}</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118500"},"PeriodicalIF":3.9,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335690","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}

{"title":"High-performance PVDF/Sepiolite composite separator for Li-ion batteries","authors":"Xianghui Ding ,&nbsp;Yifan Zhang ,&nbsp;Quan Pei ,&nbsp;Yiting Tong ,&nbsp;Jiafeng Zhai ,&nbsp;Changxing Zhao ,&nbsp;Yun Ou ,&nbsp;Jing Chen ,&nbsp;Shuhong Xie","doi":"10.1016/j.mseb.2025.118517","DOIUrl":"10.1016/j.mseb.2025.118517","url":null,"abstract":"<div><div>PVDF has a relatively high polarity leading to better affinity with electrolyte, and its relatively high dielectric constant promotes the dissociation of lithium ions. Sepiolite has a unique fibrous morphology, forming a rich pore structure, which can enhance the specific surface area and thermal stability of separators. In this work, the PVDF/sepiolite composite separator is prepared by electrospinning technology. Benefiting from the high polarity and dielectric constant of PVDF and the special structure of sepiolite, the composite separator reveals excellent electrolyte adsorption and electrochemical performance. It shows a high ionic conductivity (3.04 × 10^-3 S·cm⁻¹) and a high lithium-ion transference number (<span><math><mrow><msub><mtext>t</mtext><msup><mrow><mtext>L</mtext><mtext>i</mtext></mrow><mrow><mo>+</mo><mspace></mspace></mrow></msup></msub></mrow></math></span> = 0.781), With excellent rate capacity (110mAh g⁻¹ even at 5C) and cycle performance (∼165mAh g⁻¹ after 250 cycles at 0.5C with a capacity retention of 99 %). The thermal stability and electrochemical performance of the composite separator is enhanced by adding appropriate amount of sepiolite.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118517"},"PeriodicalIF":3.9,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335689","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}

{"title":"Structure design of Sn,Fe-doped ZnO composites for the enhancement of their photocatalytic activity","authors":"L.L. Khomutinnikova ,&nbsp;M.A. Gavrilova ,&nbsp;S.K. Evstropiev ,&nbsp;N.K. Kuzmenko","doi":"10.1016/j.mseb.2025.118528","DOIUrl":"10.1016/j.mseb.2025.118528","url":null,"abstract":"<div><div>The design of Sn,Fe-doped ZnO composites for the enhancement of their photocatalytic activity was studied. Obtained materials were synthesized by polymeric sol–gel method and have different chemical compositions and morphology. The structure and properties of composites having two different morphologies: 1) uniform doped materials, and 2) core–shell ZnO/SnO₂-Fe₂O₃ particles were compared. XRD and SEM analysis, photoluminescence and Raman spectroscopy, the study of organic dye Chicago Sky Blue adsorption and its photocatalytic decomposition at the presence of prepared composites were applied for the materials characterization. The Sn,Fe-doping of ZnO stimulates the formation of different structural defects in the crystals structure. The difference in the formation of defects in composites having the different structures was observed. It was found that there is no the strong relationship between the dye adsorption onto different Sn,Fe/ZnO-based composites and their photocatalytic activity. The core/shell composites demonstrate the higher dye adsorption rate than uniform doped analogues but the lower rate of dye photocatalytic decomposition. The results of assessing the adequacy of using various kinetic models of dye adsorption on the surface of composites and its photocatalytic decomposition are presented.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118528"},"PeriodicalIF":3.9,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331336","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}

{"title":"Controlling of graphene size for better electrochemical sensors","authors":"Anna E. Silva,&nbsp;Gabriel Zeplin,&nbsp;Eduardo G.C. Neiva","doi":"10.1016/j.mseb.2025.118527","DOIUrl":"10.1016/j.mseb.2025.118527","url":null,"abstract":"<div><div>Here, we report on the production of graphene oxides (GO) with controlled lateral sizes using different exfoliation methodologies and their influence on electroanalytical responses. Their structures, morphologies and functional groups were characterized. The GO thin films, deposited on indium tin oxide (ITO) electrodes, were electrochemically reduced to reduced graphene oxide (rGO). The thin films were applied as chronoamperometric sensors for ascorbic acid. The rGO-TS, obtained by tip sonication, exhibited expressive low limits of detection (LD) and quantification (LQ), 0.90 ± 0.35 and 2.90 ± 0.12 μmol L⁻¹, respectively, good reproducibility and minimal (or no) interference. The rGO-TS thin film also showed low LD and LQ for N-acetylcysteine detection, 6.59 ± 1.36 and 21.97 ± 4.55 μmol L⁻¹, respectively. The results of the optimized rGO-TS thin film were attributed to its better conductivity and higher edge ratio. This work represents an investigation into the effect of both GO and rGO lateral size on sensor performance.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"321 ","pages":"Article 118527"},"PeriodicalIF":3.9,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331338","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}